Texas yeewala okuyita 11 ez’amangu ez’okukuuma bbaatule mu kyeya kya 2024. California yayisa gigawatts 10 eza bbaatule mu April. Wabula nga January 16, 2025, omuliro ogwakwata bbaatule ku Moss Landing gwawaliriza abatuuze 1,200 okusengulwa okumala essaawa 24.
Obubiri buno butegeeza enkola z’okutereka amaanyi ga bbaatule leero-mu kiseera kye kimu nga zigonjoola ebizibu by’okutebenkera kw’omukutu ate nga zireeta obulabe obuyinza okuggala emiriraano. Okutegeera ebirungi n’ebibi by’enkola y’okutereka amaanyi ga bbaatule si dduyiro wa kusoma wabula kyetaagisa mu kukola. Ekituli wakati w’embiro z’okuteeka mu nkola n’okuddukanya akabi tekibangako nga kinene. Mu mwaka gwa 2024 gwokka, GW 69 ez’obusobozi bwa BESS zajja ku mutimbagano mu nsi yonna, nga zikiikirira ebitundu 45% ku bifo byonna ebikuŋŋaanyiziddwa. Ekyo kyenkana okuzimba obusobozi bw’ebyafaayo bw’amakolero gonna mu myezi kkumi n’ebiri.
Naye wuuno okulinnya kw’okussaawo kw’ebintu kwe kuzibikira: kumpi ebitundu 19% ku pulojekiti ezikola zifuna okukendeera kw’amagoba olw’ensonga z’ebyekikugu. Ebintu bitaano ebikulu eby’obukuumi byagwawo mu 2024, nga bitono okuva ku myaka egiyise naye nga bikyali bimala okuleetawo okwekenneenya kw’amateeka. Era wadde ng’ebisale by’enkola byakka ebitundu 40% omwaka-mu-mwaka okutuuka ku $165/kWh-okukendeera okusinga obunene mu byafaayo-okukuŋŋaanyizibwa kw’enkola y’okugabira abantu mu China kuleeta obuzibu mu by’obufuzi abakola pulojekiti abasinga bwe banyooma.
Emigabo gisukka ku pulojekiti ssekinnoomu. Abaddukanya emikutu gya giridi kati beesigamye ku BESS okuddamu kwa frequency generators ez’ennono ze zaatwalira essaawa eziwera okugiwa. Battery bwe ziremererwa okutuusa amaanyi amajjuvu ag’erinnya olw’ensobi za inverter oba cells ezivunze, grid tefiirwa busobozi bwa backup bwokka-efiirwa ebiseera by’okuddamu ebya milisekondi ebiziyiza okuzikira kw’amazzi aga cascading. Kino kifuula okutegeera obusobozi n‟obuzibu byombi si mu by‟ensoma byokka wabula mu nkola y‟emirimu.
Ensonga y’Eby’enfuna Eddaabiriza Obutale bw’Amasannyalaze
Okutereka bbaatule kwakyusa script ku by’enfuna by’amasannyalaze mu 2024, era ennamba zino zinyumya emboozi batono gye baalaba ng’ejja emyaka etaano egiyise.
Emiwendo gy’ensi yonna egy’okutereka amasannyalaze egy’ekisumuluzo gyatuuka ku doola 165/kWh mu 2024, nga kino kitegeeza nti gyakendeera ebitundu 40% okuva mu 2023-okukendeera okusinga obunene mu mwaka gumu okuva okulondoola lwe kwatandika mu 2017. Mu China, obusobozi obusukkiridde mu by’amakolero gye bwavuga okuvuganya okw’amaanyi, enkola ezimala essaawa 4 zatuuka ku doola 85/kWh ku kigero. Ttenda ezimu eza December 2024 mu China ez’okuzimba bbaatule nga kwogasse n’enkola z’okukyusa amasannyalaze (nga tobaliddeemu ssente za EPC n’okuyunga emikutu) zaayingira ku doola 66/kWh.
Okuteebereza kw’omuwendo gwa NREL mu 2025 kutandikira ku doola 334/kWh ku nkola enzijuvu ey’essaawa 4-ey’omugaso-mu 2024, ng’embeera z’omu makkati-ziteebereza okukendeera kwa 47% mu mwaka gwa 2030 ne 68% mu mwaka gwa 2050 mu mbeera y’omuwendo omutono-. Naye wuuno ensonga y’enkyukakyuka mu by’enfuna esinga obukulu: emiwendo gya bbaatule-egikola nga kitundu ku nsaasaanya yonna ey’enkola-gyagwa ku bungi{17}}obuzito bwa wakati w’ensi yonna eya doola 115/kWh mu 2024. Ku miwendo gya pack egya wansi -$100/kWh (eyatuukibwako edda mu China), solar-plus-storage efuuka emu ku masannyalaze agasinga okuba ag’omuwendo omutono ensonda ezibeerawo mu mwaka gwa 2035, nga za buseere okusinga okulabirira amakolero g’amafuta g’ebintu ebikadde agaliwo mu butale bungi.
Texas y’ekyokulabirako ky’enkyukakyuka eno mu by’enfuna. ERCOT yassaawo 4 GW ez’okutereka ku mutindo gwa grid-mu 2024, n’esinga California ebitundu 12%. Ekyavaamu: zero conservation calls all summer versus 11 in 2023, ate August 2024 emiwendo gy’amasannyalaze nga gya wakati wa doola 160 buli megawatt-hour wansi okusinga August 2023. Abakola bbaatule baakwata ssente eziyingira mu arbitrage ate abaguzi ne baganyulwa mu kunyigirizibwa kw’emiwendo mu kiseera ky’obwetaavu obw’oku ntikko.
Obumanyirivu mu California byongera ku kitundu ekirala. Nga bbaatule ezisoba mu 10 GW ziteekeddwa, kati bbaatule zikola ebitundu ebinene eby’omugugu mu ssaawa z’enjuba ez’oku ntikko (essaawa eziggwaako 10-14), nga zisasula nga emiwendo gya ‘wholesale’ gikka ku ziro oba negativu. Mu kiseera ky’okuziba kw’enjuba mu April 2024, enkola za BESS zaaliyirira okukendeera kw’amasannyalaze g’enjuba GW 1, nga ziraga omuwendo gw’okugumira emikutu gy’empuliziganya ogusoomooza okwekenneenya okwangu okw’omuwendo n’emigaso.
Obusobozi bw’omugoba gw’ensimbi bunnyonnyola lwaki okuteekebwa mu nkola kukyagenda mu maaso wadde nga waliwo okweraliikirira kw’amagoba. Pulojekiti za BESS zisobola okussaawo emikutu gy’enyingiza egy’enjawulo: okusasula obusobozi okuyita mu ndagaano za gavumenti ez’emyaka 15-, endagaano z’okuddamu emirundi (mu byafaayo emyaka ebiri ne National Grid), amagoba mu kugabanya amasannyalaze, n’endagaano z’okugula amasannyalaze. Mu katale ka ERCOT akavuganya, bbaatule zaafuna ssente okuva mu mpeereza ez’okuyambako ate mu kiseera kye kimu ne ziwa amaanyi agatali ga bulijjo-ekintu jjenereeta ez’ennono ze zitasobola kukola bulungi.
Naye ekifaananyi ky’ebyenfuna kirimu ebikontana. Akatale konna ak’obuweereza obuyambi kakiikirira ebitundu ebitakka wansi wa 5% ku mirimu gy’akatale ka ERCOT okutwalira awamu. Nga obusobozi bwa bbaatule obw’enjawulo bwe bubooga mu-ennyiriri z’okuyunga ziraga obusobozi obutegekeddwa obusukka mu mitendera ena egy’akaseera kano-okuvuganya okw’amaanyi ku mpeereza zino kwakendeeza dda ku migabo. Abakola amasannyalaze beeyongera okuba nga balina okuvuganya mu butale bw’amasannyalaze ng’okukyukakyuka kw’emiwendo okwayita kuyinza obutalagula kudda mu biseera eby’omu maaso naddala ng’okukozesa bbaatule kwennyini kukendeeza ku bbeeyi okulinnya okwafuula pulojekiti ezaasooka okukola amagoba.
Ebisale by’ebintu ebisookerwako byongera okukyukakyuka. Ebbeeyi ya Lithium carbonate yatuuka ku likodi mu 2022, yagwa mu 2023-ku ntandikwa ya 2024 olw’okugabibwa okusukkiridde, olwo n’edda mu makkati ga-2025 okutuuka ku CNY 59,000-69,000 buli metric ton ($8,500-9,000 USD). Roller coaster eno ekosa ebyenfuna bya pulojekiti mu ngeri etategeerekeka. Abamu ku basenserezi bagamba nti China yasukkiridde okugabira obutale mu bugenderevu okukuuma obuyinza n’okunyigiriza abavuganya abatali ba China-amakampuni g’eby’eby’obuggagga eby’omu ttaka naddala mu Australia ne Afrika-okuva mu magoba mu kiseera ng’emiwendo gikka.
Okussa ebintu mu nkola y’okugabira abantu ebintu kireeta obulabe obukwekebwa mu by’enfuna. China efuga ebitundu nga 75% ku bbaatule za lithium-ion mu nsi yonna, ebitundu bisatu{3}}na eby’obusobozi bw’ensi yonna obw’okulongoosa lithium, era ekuuma ssente ez’obukodyo mu birombe bya lithium okwetoloola South America, Africa, ne Australia. Okukuŋŋaanyizibwa kuno kitegeeza nti okusika omuguwa mu by’obufuzi oba okuziyiza okutunda ebweru w’eggwanga kuyinza okulinnyisa ssente mu bwangu. Etteeka lya Amerika erikendeeza ku bbeeyi y’ebintu ligezaako okuziyiza kino n’okukendeeza ku musolo ku by’amakolero n’ebyetaago by’okunoonya eby’amaguzi mu ggwanga, naye okuzimba enkola z’okugabira abantu ebintu mu ngeri ey’enjawulo kyetaagisa emyaka era nga kitwala ebitundu 20% eby’omuwendo gw’ensimbi bw’ogeraageranya n’ebyo ebikolebwa mu China.
Obuzibu bw’okussaako byongera ku layeri endala ey’omuwendo etatera kukwatibwa mu bipimo bya $/kWh. Enkola ennene-zeetaaga bbalansi-ey’ebitundu by’enkola, okuddukanya ebbugumu, okuziyiza omuliro, n’ebyuma ebiyunga giridi nga byonna awamu byenkana oba ebisukka ssente za bbaatule. Puleesa y’okugabira ebyuma bya transformer ne substation ereetedde okutereka, ebbeeyi okulinnya, n’okulwawo kwa pulojekiti, ekifudde okukendeeza ku nsaasaanya ya bbaatule ku mutwe okudda mu kukekkereza enkola yonna awamu okutono ennyo.
Mpozzi ekisinga obukulu, ensonga y’ebyenfuna yeeyongera okusinziira ku miwendo gya kaboni n’ebiragiro by’amasannyalaze agazzibwawo okusinga okuvuganya okw’akatale okulongoofu. IRA ekendeeza ku musolo gwa 30% ku nsimbi eziteekebwa mu nkola z’okutereka ebintu nga zeetongodde ziyamba butereevu okuteekebwa mu nkola. Awatali buwagizi buno obw’enkola, pulojekiti nnyingi zandilwana okuvuganya n’entuuko za ggaasi ow’obutonde ku by’enfuna byokka naddala mu butale obulina amafuta g’ebintu ebikadde ag’ebbeeyi entono.
Emigaso gy’okutebenkera mu grid Omulembe gw’ennono gwe gutasobola kukwatagana
Okutereka bbaatule tekukoma ku kudda mu kifo kya masannyalaze aga bulijjo-kikola emirimu ttabiini eziwuuta gye zitasobola mu mubiri.
Obudde bw‟okuddamu butegeeza enkizo enkulu. Enkola za BESS zitera okukyuka okuva ku maanyi agataliiko kye gakola okudda ku masannyalaze amajjuvu mu nsengekera za giridi ntono, emirundi mingi wansi wa milisekondi 100. Kino kigeraageranye ku ttabiini za ggaasi ezigatta-cycle ezeetaaga eddakiika 30-60 okutuuka ku bifulumizibwa mu bujjuvu, oba amabibiro g’amanda agetaaga essaawa. Nga twekenneenya ebirungi n’ebibi by’enkola y’okutereka amaanyi ga bbaatule, obusobozi buno obw’okuddamu mu milisekondi buyimiriddewo-bbaatule zituusa okutebenkera kw’omukutu (grid stabilization) omulembe ogwa bulijjo gwe gutasobola kukwatagana na mubiri. Texas ERCOT bwe yayolekagana n’okukyama kwa frequency mu kiseera ky’obunnyogovu mu February 2024, bbaatule zaasitula kumpi 1 GW mu ddakiika ntono, ne zitebenkeza giridi nga okulemererwa kw’amazzi agakulukuta tekunnasaasaana. Obusobozi buno obw’okuddamu obwa milisekondi-bukiikirira ekimu ku birungi n’ebibi ebisinga obukulu mu nkola y’okutereka amaanyi ga bbaatule-omuwendo omunene ennyo ogw’okutebenkeza giridi ogusasulwa obuzibu bw’okuddukanya enkumi n’enkumi z’obutoffaali obutambula amangu.
Obusobozi buno obw’okuddamu mu sub-second bukyusakyusa mu kulungamya frequency. Grid frequency erina okusigala mu 59.9-60.1 Hz (mu nkola za 60 Hz) okuziyiza ebyuma okwonooneka n'okuzikira. Grids ez'ennono zakuuma frequency nga ziyita mu "spinning reserve"-generators ezidduka wansi w'obusobozi, nga zeetegefu okulinnya. Enkola eno eyonoona ebitundu 15-30% ku busobozi bw’okukola amafuta era eyokya amafuta obutasalako. BESS emalawo kasasiro ono ate ng’egaba okufuga kwa frequency okw’amangu, okutuufu.
Okutebenkera kwa vvulovumenti kulaga ekitundu ekirala bbaatule mwe zisinga enkola endala. Ebyuma by’amasannyalaze mu inverter za bbaatule bisobola okutereeza mu ngeri ey’amaanyi ebifuluma mu masannyalaze agakola, nga bifuga emitendera gya vvulovumenti mu mikutu gy’okutambuza. Kino kyeyongera okuba ekikulu ng’enjuba n’empewo-ebifuyira amaanyi mu ngeri ekyukakyuka-bidda mu kifo kya jenereta ezikwatagana mu butonde ezaatebenkeza vvulovumenti okuyita mu butakola bwazo obuzitowa. California’s 10 GW of battery storage kati egaba obuyambi bwa voltage obwandibadde bwetaagisa static compensators ez’ebbeeyi oba jenereta ezitakozesebwa bulungi.
Omukolo gwa Bungereza ogwa November 2022 ogwa grid gulaga obusobozi bwa BESS mu situleesi. Ebiyungo bwe byagwa, enkola za bbaatule ennene-zayamba okuziyiza okuzikira nga zifuyira amaanyi amangu ago n’okutebenkeza frequency. Amaanyi ga backup ag'ennono tegayinza kwanukula mangu kimala okuziyiza okulemererwa kwa cascading okuyita mu network yonna.
Okugatta amaanyi agazzibwawo kukiikirira mpozzi enkola esinga okukyusa. Ebifulumizibwa mu mpewo n’enjuba bisobola okuwuubaala ennyo mu ddakiika-ebire ebiyiringisibwa ku faamu y’enjuba bisobola okukendeeza ku bifulumizibwa ebitundu 70% mu sikonda. Awatali kutereka, abaddukanya emikutu gy’amasannyalaze balina okukendeeza ku kukola amasannyalaze agazzibwawo mu biseera eby’okufulumya amafuta amangi- oba okukuuma amafuta ag’ebbeeyi agaterekeddwa nga gatambula obutasalako. BESS emenya ekiziyiza kino ng’enyiga amaanyi agazzibwawo agasukkiridde nga galiwo era ne gafulumya mu biseera by’okuwummulamu, mu ngeri ennungi n’efuula eby’obugagga ebitasalako okufuuka eby’okusindikibwa.
Battery ya Kapolei eya Hawaii etuwa ekyokulabirako ekituufu. Enkola eno yadda mu kifo ky’ekkolero ly’amanda eryasembayo ku kizinga kino ate ng’etereka amaanyi g’enjuba okusobola okugafulumya ekiro, n’ekuuma emikutu gy’amasannyalaze nga ginywevu wadde nga Oahu yeekutudde ku mikutu gy’amasannyalaze egy’oku lukalu. Pulojekiti eno eraga engeri okutereka gye kusobozesa enkola z’ebizinga ne microgrid okutambulira okusinga ku masannyalaze agazzibwawo awatali kusaddaaka kwesigika-ekintu ekitasoboka na tekinologiya w’omulembe yekka.
Obusobozi bw'okulongoosa mu bbanga eringi-buwa bbaatule obusobozi obw'enjawulo mu kukola. Obutale bwa ERCOT ne CAISO bukozesa pulogulaamu ez’omulembe okusindika bbaatule okusinziira ku miwendo egyateeberezebwa essaawa eziwera. Enkola esobola okukwata mu bugenderevu state-ya-charge oba wadde charge uneconomically mu interval emu, nga esuubira emikisa gya higher-value discharge oluvannyuma. Mu kiseera ky’ebbugumu eryali mu California mu kyeya kya 2022, abaddukanya ISO bakozesa ebiziyiza ebitono ennyo eby’embeera-ey’okucaajinga okukakasa nti bbaatule ziyingira mu ssaawa ez’akawungeezi ez’oku ntikko nga zirina chajingi emala okutuukiriza okulinnya kw’omugugu gw’obutimba, ng’amasannyalaze g’enjuba gakendedde nnyo naye obwetaavu ne busigala nga bungi.
Okukendeeza ku mugotteko gw’obutambuzi bukiikirira omugaso omulala omukulu. Mu kifo ky’okuzimba layini empya ez’okutambuza-ezitwala emyaka era nga zimalawo obuwumbi-ebitongole ebikozesa amasannyalaze bisobola okuteeka bbaatule ku bitundu ebiziyiziddwa okunyiga omulembe ogusukkiridde mu biseera eby’obwetaavu obutono-n’okufuyira amasannyalaze mu kitundu mu kiseera ky’omugotteko. Enkola eno eya "non-wires alternative" yawonya okuteeka ssente ennyingi mu by'obutonde mu pulojekiti eziwera eza California.
Obusobozi bw’okutandika omuddugavu byongera okugumira embeera y’emirimu. Ebimu ku bifo bya BESS bisobola okuwa ebitundu by’omukutu amaanyi oluvannyuma lw’okuzikira ddala, nga biwa amasannyalaze agasooka ageetaagisa okuddamu okutandika jenereta ennene-omulimu ogwali gwetaaga edda jenereta za dizero ez’enjawulo oba amabibiro g’amazzi.
The Degradation Reality: Enkola Okusinziira ku Bisuubizo
Abakola bbaatule balangirira ebikwata ku bbaatule eziwuniikiriza, naye enkola y’emirimu ereeta ebizibu ebikendeeza ku busobozi n’enyingiza.
CATL yalangirira ekintu kyayo ekya "Tener" BESS mu 2024 ng'egamba nti tewali kuvunda mu myaka etaano. Kino kitegeeza oba enkulaakulana ya tekinologiya eyeewuunyisa oba okutunda okw’amaanyi-data y’omu nnimiro ejja kusalawo ki. Enkola za lithium-ion ezisinga zikendeera ebitundu 2-3% buli mwaka mu mbeera z’obugaali eza bulijjo, ekitegeeza nti bbaatule ebalirirwamu 100 MWh ng’empya ekola 85-91 MWh oluvannyuma lw’emyaka etaano.
Enkola y’okuvunda nsonga kubanga si-linear era nga yeesigamye ku mbeera-. Ebbugumu erya waggulu lyanguya okufiirwa obusobozi mu ngeri ey’ekitalo-okukola ku diguli 35 okusinziira ku diguli 25 kiyinza okukubisaamu emirundi ebiri emiwendo gy’okuvunda. Enzirukanya z’okufulumya amazzi mu buziba (nga tukozesa 90-100% ku busobozi) zivunda mangu bbaatule okusinga enzirukanya ezitali nnene (nga tukozesa 40-60%). Okucaajinga amangu n’okufulumya amazzi bivaamu ebbugumu ne situleesi ekikendeeza ku bulamu. Kino kitegeeza nti enkola ez’amaanyi ez’emirimu eziyingiza ssente ennyingi zisobola okusaanyaawo omuwendo gw’eby’obugagga ogw’ekiseera ekiwanvu mu butamanya.
Data y'emirimu gy'ensi entuufu- eraga obunene bw'ekizibu. Lipoota ya Accure Battery Intelligence eya 2024 yazuula nti pulojekiti za BESS ebitundu 19% zifuna amagoba amatono olw’ensonga z’ebyekikugu. Bino si kulemererwa kwa katyabaga-bikola ku kuvunda okutali kwa maanyi, emiguwa gy’obutoffaali egitakwatagana, ne modulo enafu eziremesa enkola okutuusa amaanyi ag’erinnya amajjuvu okumala ebbanga eriweereddwa endagaano. Enkola ya bbaatule eyakolebwa endagaano okuwa MW 100 okumala essaawa 4 bw’esobola okuyimirizaawo MW 85 zokka okumala essaawa 3.5 olw’okuvunda kw’obutoffaali, eremererwa okutuukiriza obweyamo bw’akatale n’efiirwa ssente.
State-of-okuddukanya emisolo kuleeta okusika omuguwa mu mirimu. Obuwangaazi bwa bbaatule obulungi bwetaagisa okukuuma chajingi wakati wa 20-80% ku busobozi, okwewala ebisukkiridde. Naye ebyenfuna by’akatale bitera okusaba okufulumizibwa mu bujjuvu mu biseera by’emiwendo egy’oku ntikko n’okusasuza okusinga obunene mu biseera by’emiwendo egy’obubi, ekiwaliriza abaddukanya emirimu okulonda wakati w’enyingiza ey’amangu n’okukuuma eby’obugagga eby’ekiseera ekiwanvu. Enkola ez’omulembe ez’okuddukanya bbaatule zigezaako okutebenkeza ebyetaago bino ebivuganya nga ziyita mu kuddukanya ebbugumu n’okulongoosa enkola ya charge curve, naye okusuubulagana kukyaliwo.
Ebikwata ku bulamu bw’enzirukanya biraga nti bibuzaabuza mu nkola. Battery elangibwa nga "8,000 cycles at 80% depth of discharge" ewulikika nga ewunyisa okutuusa lw'obalirira nti kino kitegeeza emyaka nga 11 egy'okuvuga emirundi ebiri-buli lunaku (cycles 8,000 ÷ cycles 730 buli mwaka). Naye ekyo kitwala embeera ennungi-ebbugumu erikwatagana, emiwendo gy’okucaajinga egisinga obulungi, n’enkola y’obutoffaali eya kimu. Ebiteekebwawo ebituufu byolekagana n’okukyukakyuka kw’ebbugumu, obubonero obusindika amangu okuva mu baddukanya emikutu, n’enjawulo mu kukola mu nkumi n’enkumi z’obutoffaali, byonna bikendeeza ku bulamu bw’enzirukanya obutuukiddwaako wansi w’ebiragiro.
Capacity fade esalagana bubi n’endagaano z’empeereza ya grid. Enkola ya BESS eyinza okussa omukono ku ndagaano y’obusobozi bw’emyaka 15-ne National Grid, ng’esuubiza okutuusa amasannyalaze ga MW 100 ku bwetaavu. Mu mwaka 10, oluvannyuma lw’enkumi n’enkumi z’enzirukanya n’okuvunda mpolampola, enkola eno esobola okutuusa amaanyi ga MW 75 zokka. Omuddukanya bbaatule ayolekedde okwongera ku bbaatule ez’ebbeeyi (okugattako bbaatule empya okukuuma obusobozi) oba ebibonerezo by’endagaano. Ensonga eno ey’ebyenfuna efuula endagaano ez’ekiseera ekiwanvu okuba ez’akabi wadde nga zirina emigaso egy’okukakasa enyingiza.
Okufiirwa kw'obulungi bw'olugendo lw'okudda -, wadde nga kutono okusinga ensonga z'okuvunda, kukuŋŋaanyizibwa okumala ekiseera. Enkola ekola obulungi ebitundu 85% (omutindo gw’amakolero oguliwo kati) efiirwa ebitundu 15% eby’amasoboza agaterekeddwa olw’okufiirwa kw’okukyusa n’ebbugumu. Kino tekiwulikika nga kya katemba okutuusa ng’okoze model y’ebyenfuna by’amasoboza: okugula amasannyalaze ku doola 20/MWh n’okutunda ku ddoola 100/MWh kivaamu amagoba ga doola 80/MWh mu ndowooza, naye okufiirwa kw’obulungi ebitundu 15% kukendeeza kino okutuuka ku doola 68/MWh omugatte, ekikosa nnyo amagoba ga pulojekiti.
Okuwulira ebbugumu kuleeta ebizibu by’ebitundu. Battery za lithium-ion zikola bulungi wakati wa 15-35℃. Ebifo ebiteekebwa mu ddungu mu bifo nga Arizona oba pulojekiti ennene ez’omu buvanjuba bwa Middle East nga NEOM eya Saudi Arabia byolekedde ebbugumu erisukkiridde eryetaagisa enkola z’okunyogoza ez’ebbeeyi, ekyongera ku kapito n’ebisale by’emirimu ate nga kiyinza okwanguya okuvunda wadde nga kiddukanyizibwa ebbugumu.
Eby’enfuna eby’okwongera ku nkomerero bye bisalawo obusobozi bwa pulojekiti. Ebisinga obungi ku bikozesebwa-scale BESS biteekateeka okwongera ku busobozi bumu oba okusingawo mu myaka 20-30 egy’obulamu bwa pulojekiti, mu bukulu okukyusa bbaatule ezonoonese ate nga zisigaza inverters ez’ebbeeyi, transformers, n’okuyungibwa ku grid. Naye okukendeera kw’ebbeeyi ya bbaatule kifuula kino ekizibu-okwongera okuteekebwa mu mulembe gwa 2020 mu 2030 nga bbaatule za buseere ebitundu 50% buli kWh okusinga ezasooka kireeta obutakwatagana mu kubala ebitabo n’emirimu. Okyusa ekimala okuzzaawo obusobozi obw’olubereberye, oba olongoosa ku kemiko ow’amaanyi agasingako, ekiyinza okwetaagisa enkola empya ez’okuddukanya?
Obulabe Obuli mu by’okwerinda Obwetaaga Obukuumi Obutasalako
Omuliro ogwakwata Moss Landing mu January 2025 gukola ng’okujjukiza okulowooza nti wadde nga waliwo okulongoosa mu by’okwerinda, enkola za bbaatule zitereka amaanyi mangi nnyo mu bifo ebitono ennyo, era okuziyiza bwe kulemererwa, ebivaamu byeyongera mangu.
Thermal runaway ekiikirira okusoomoozebwa okukulu okw’obukuumi bwa bbaatule. Enkola eno ey’olujegere etandika ng’obutoffaali obumu bubuguma nnyo, ne kivaako okuvunda kw’eddagala okufulumya ebbugumu ne ggaasi eziyinza okukwata omuliro. Ebbugumu lino lisaasaana mu butoffaali oburiraanyewo, ne litandika okuvunda kwabwo mu kulemererwa okukulukuta okuyinza okuzingira modulo za bbaatule zonna mu ddakiika ntono. Oluvannyuma lw’okutandika, thermal runaway eraga nti kizibu nnyo okuziyiza-omuliro gwa bbaatule za lithium gwokya ku bbugumu erisukka diguli 1,000 era gusobola okuddamu okukwata omuliro oluvannyuma lw’essaawa oba ennaku oluvannyuma lw’okulabika nga guzikiddwa.
Ekyabaddewo ku Moss Landing kyakuuma ekizimbe ekimu nga kyaka nga waliwo n’omuliro ogw’amaanyi-wadde nga abakozi ba kkampuni n’ebitongole ebizikiriza omuliro baakola kaweefube ow’awamu. Okusengulwa kw’abatuuze 1,200 okumala essaawa 24 kulaga engeri omuliro gwa bbaatule gye gutiisa si kussaako kwokka wabula n’ebitundu ebiriraanyewo. Okulondoola omutindo gw’empewo mu kiseera n’oluvannyuma lw’omukolo tekwazudde bulabe bwonna eri obulamu bw’abantu, naye ekivaamu kino kyali kyetaagisa ebikozesebwa ebinene eby’okukola ku mbeera ez’amangu ebifo bingi bye bibulamu.
Enkola z’okuziyiza omuliro zisanga okusoomoozebwa okw’enjawulo n’omuliro gwa bbaatule. Enkola ezisinziira ku mazzi{1}}zisobola okunyogoza bbaatule n’okukendeeza ku kusaasaana naye zeetaaga obuzito obunene-ebikumi n’ebikumi bya ggaloni okuteekebwamu ebinene. Kemiko ezimu zikolagana nnyo n’amazzi. Enkola z’okuziyiza ggaasi nga FM-200 oba Novec 1230 zikola ku muliro gw’amasannyalaze naye zifiirwa obulungi ku nkola z’eddagala mu kudduka okw’ebbugumu. Enkola ezisinga obulungi kati zissa essira ku kuziyiza (okulondoola ebbugumu ku ddaala ly’obutoffaali-, ebiziyiza okwawula wakati wa modulo) n’okuziyiza (ebisenge ebiziyiza omuliro, ebanga erimala) okusinga okunyigiriza.
Omukka ogw’obutwa ogufuluma mu mubiri gwongera obulabe bw’omuliro. Battery za lithium-ion eziyokya zifulumya asidi wa hydrofluoric, carbon monoxide, n’obulabe obulala obw’okussa. Abasooka okuddamu beetaaga ebyuma eby’enjawulo eby’okwekuuma n’okutendekebwa. Ebitundu ebiriraanye ebifo ebinene ebya BESS byetaaga enteekateeka ez’amangu ezibalirira okusengulwa okuyinza okubaawo n’okukosebwa kw’omutindo gw’empewo-ebyetaago eby’okwongera ku buzibu bwa pulojekiti n’okuziyiza kw’abantu b’omukitundu.
EPRI's BESS Failure Incident Database yalondoola ebizibu 15 eby'okulemererwa mu 2023 n'ebintu 5 ebikulu mu 2024, nga biraga okukendeera kw'emiwendo gy'ebintu ebigwawo buli gigawatt-essaawa essiddwawo. Ennongoosereza eno eraga omutindo gw’amakolero omulungi, enkola y’emirimu ekuuma, n’omutindo gw’obukuumi ogwongezeddwa nga UL 9540 ne 9540A. Naye, omuwendo omutuufu ogw’ebiteekebwawo gukula mangu nnyo ne kiba nti n’emiwendo egy’okukendeera givaamu ebikwata ku kubala ebibaddewo. China yali yaakassa mu nkola 36 GW ez’okutereka mu 2024 gwokka-okusukka ku busobozi bw’amawanga mangi bwonna obwateekebwawo.
Okwekenenya ebivaako emirandira kulaga nti ebibaawo biva mu nsonda ez’enjawulo: ekiziyiza okutereka DC (obutoffaali oba modulo zennyini), bbalansi-ya-enkola z’ebimera (inverters, HVAC, enclosures), enkola z’empuliziganya n’okufuga, oba ensonga ez’ebweru (embeera z’obutonde, okukosebwa kw’omubiri). Okwekenenya kwa EPRI kwazuula ebibaddewo nga biva ku nsobi mu dizayini, obuzibu mu kukola, ensobi mu kugatta, n’ensobi mu nkola-tewali ngeri emu ey’okulemererwa efuga.
Omutindo gw’okuzimba n’okugatta gukosa nnyo obukuumi. Ebintu ebidduka mu bbugumu bitera okuva ku nsobi mu kukuŋŋaanya, torque etali ntuufu ku biyungo by’amasannyalaze, obucaafu nga bakola, oba enkola y’okunyogoza etali nnungi. Enkyukakyuka okudda ku ndagaano za EPC ezirina ebisumuluzo kiyamba nga tunyweza obuvunaanyizibwa, naye sipiidi y’okuteekebwa mu nkola ey’amangu esika omuguwa okufuga omutindo mu nkola z’okugaba ebintu ezikola enkumi n’enkumi za konteyina za bbaatule buli mwaka.
Obukuumi ku mikutu gya yintaneeti bukiikirira okweraliikirira kw’ebyokwerinda okuvaayo. Ebifo eby’omulembe ebya BESS biyungibwa ku nkola z’okufuga emikutu, ne bikola ebiyinza okulumba. Ekintu ekyaliwo mu 2023 nga enkola ya bbaatule eyakolebwa Abachina-mu kifo ky’amagye g’oku mazzi mu Amerika yaggyibwako olw’okweraliikirira ku by’okwerinda ku mikutu gya yintaneeti kiraga ebipimo by’ebyobufuzi by’ensi. Abazannyi ab’obulabe abassa mu matigga enkola z’okuddukanya bbaatule bayinza okuleetawo okudduka kw’ebbugumu, okulemesa ebiziyiza eby’obukuumi, oba okutaataaganya empeereza ya giridi mu biseera ebizibu. Obulabe buno bweyongera nga ebiteekebwawo bikula era nga bikulu nnyo mu ggirita-.
Ennongoosereza mu byokwerinda okuva mu kemiko ya lithium iron phosphate (LFP) esaana okwogerwako. Battery za LFP, kati ezisinga mu bifo eby’omugaso-scale installations, ziraga nti zinywevu mu bbugumu okusinga nickel manganese cobalt (NMC) kemiko. Obutoffaali bwa LFP busobola okugumira ebbugumu erya waggulu nga tebunnadduka mu bbugumu era ne bufulumya ebbugumu ettono mu biseera by’okulemererwa. Naye, "obukuumi okusinga NMC" tekitegeeza "obukuumi"-LFP omuliro gukyayagala kaweefube ow'okuziyiza n'okuddamu mu bwangu.
Enkola y’ekitongole kya yinsuwa eraga nti akatale kategedde okusoomoozebwa kw’obukuumi. Okubalirira kwa premium ku pulojekiti za BESS kulwanagana ne data ya actuarial ekoma, tekinologiya akulaakulana amangu, n’ebibaddewo eby’amaanyi-profile ebikyusakyusa endowooza z’akabi. Abawandiisi b’ebiwandiiko beeyongera obwetaavu ebiwandiiko ebikwata ku byokwerinda ebikwata ku by’okwerinda mu bujjuvu, enkola z’okulondoola ebbugumu, n’enkola ezikuuma enkola y’emirimu. Abamu ku ba yinsuwa balagira okuyingizaamu aba OEM ab’ettutumu ne bayinginiya ab’ekibiina eky’okusatu abalina ebisaanyizo okwekenneenya akabi, nga bongera ku nsaasaanya naye nga balongoosa ebiva mu by’okwerinda.
Okussa mu nkola y’okugaba ebintu: Obuzibu obukwekebwa
Amakolero g’okutereka bbaatule okukendeeza ku nsaasaanya mu ngeri eyeewuunyisa n’okulinnyisa amangu bisinziira ku musingi gw’okukola ebintu ebikuŋŋaanyiziddwa ebitondekawo obuzibu obw’obukodyo abakola abasinga bwe babuusa amaaso okutuusa lwe bifuuka ebizibu by’emirimu.
China ekola bbaatule za lithium-ion ezisukka mu 1,200 GWh buli mwaka-nga 75% ku bikolebwa mu nsi yonna. Mu mwaka gwa 2024 gwokka, obusobozi bw’Abachina obw’amakolero busobola okutuukiriza obwetaavu mu nsi yonna, ekivudde ku nsimbi ennyingi eziteekeddwa mu nkola y’okugaba ebintu mu myaka etaano egiyise. Abakola mmotoka abakulu CATL ne BYD tebagaba mmotoka za China bokka wabula Tesla, BMW, ne Toyota, ekifuula okuteekebwa mu nkola ya Western EV n’okutereka mmotoka okwesigama ku butoffaali bw’Abachina.
Okufuga kuno okw’amakolero kugaziwa wansi w’omugga. China efuga ebitundu nga 75% ku busobozi bw’okulongoosa lithium mu nsi yonna, ng’elongoosa lithium carbonate embisi okuva mu birombe bya Australia, Chile, ne Africa okugifuula ebintu eby’omutindo gwa bbaatule-. Kkampuni z’Abachina nga Ganfeng Lithium ne Tianqi Lithium zirina ssente ez’amaanyi mu pulojekiti za lithium ez’ebweru okwetoloola South America, Africa, ne Australia, nga zifuna emmere y’ebisolo ate ng’abavuganya bafuba okunoonya.
Ekisengejjo ky’omugga waggulu kiraga nti kyeraliikiriza kyenkanyi. Okuggya lithium kusinga mu mawanga matono: Australia (esinga okufulumya amafuta mu nsi yonna), Chile (esinga okutereka mu nsi yonna), n’okweyongera China oluvannyuma lw’ebizuuliddwa gye buvuddeko okugisitula n’efuuka ekyokubiri-ekisinga obunene mu tterekero. Amakubo g’okugabira Cobalt nga gayita mu Democratic Republic of Congo (70% ku bifulumizibwa mu nsi yonna), ng’ebitundu ebinene bikolebwa abatabaganya Abachina. Graphite ey’obutonde, ekozesebwa mu anode za bbaatule, esinga kuva China (70% ku bikolebwa).
Okukuŋŋaanyizibwa kuno okw’ebitundu kuleeta ebifo ebingi ebilemererwa. Obukwakkulizo ku by’obusuubuzi, okufuga okutunda ebweru w’eggwanga, oba okusika omuguwa mu by’obufuzi bisobola okutaataaganya okugaba ebintu mu bwangu. China bwe yassaawo okufuga okutunda ebweru ku tekinologiya wa bbaatule za lithium-ion mu December 2024 ng’ejuliza okweraliikirira kw’ebyokwerinda by’eggwanga, yalaga engeri ebintu ebisobola okufunibwa amangu gye biyinza okufuuka ebyokulwanyisa eby’obukodyo. Okunoonyereza kwa Amerika okulwanyisa okusuula emisolo n’okusasula emisolo kwaggulwawo mu January 2025 ku bintu bya China ebya anode, ng’egamba nti emisolo gy’okusuula emisolo gya bitundu 828% ne 921%, giyinza okuvaamu emisolo egiwera egiddamu okukola enkola y’okugaba ebintu.
Okukyukakyuka kw’emiwendo kwongera ku bulabe bw’okugabira abantu ebintu. Emiwendo gya Lithium carbonate giraga kino: likodi ya waggulu mu 2022 (doola 80,000+ buli metric ttani mu butale obumu), n’egwa wansi wa doola 15,000 ku ntandikwa ya 2024, olwo n’eddamu okutuuka ku ddoola 8,500-9,000 mu makkati ga 2025. Abamu ku basenserezi bagamba nti China yabooga obutale mu bugenderevu mu mwaka gwa 2023-2024 okugoba abasima eby’obugagga eby’omu ttaka abatali ba China ne batafuna magoba, olwo n’ekendeeza ku bikolebwa okusobola okuwagira okuddamu emiwendo ng’abavuganya bamaze okuggala emirimu. Ka kibeere nti nkyukakyuka ya kigendererwa oba ey’akatale, ekikolwa ekyo kityoboola okugumira embeera y’okugaba ebintu nga kimalawo abagaba ebintu ebirala.
Kaweefube w’okussa abantu mu bitundu by’amawanga g’obugwanjuba ayolekedde ebyenfuna ebizibu. Ensimbi ezisaasaanyizibwa mu kukola bbaatule mu Amerika ne Bulaaya zidduka ebitundu 20% okusinga ku zikolebwa mu China, nga zivudde ku nsaasaanya ya kapito, emiwendo gy’abakozi, n’enkola z’okugabira abantu ezitakulaakulana nnyo. Etteeka erikendeeza ku bbeeyi y’ebintu ery’okukendeeza ku musolo gw’okusiga ensimbi ebitundu 30% n’ebbanja ly’amakolero bigezaako okumalawo obuzibu buno, naye okutuuka ku nsaasaanya y’ensimbi kyetaagisa ensimbi eziweebwayo okumala ekiseera oba okulongoosa mu bikolebwa mu ngeri ey’omusingi ekitwala emyaka okutuukiriza.
Okulinnyisa ebizimbe (infrastructure scaling) kuleeta ebizibu ebirabika. Okuzimba gigafactories za bbaatule kyetaagisa emyaka 2-4 okuva ku kumenya ettaka okutuuka ku kukola. Wakati wa 2019 ne 2024, pulojekiti z’amakolero ga bbaatule mu Amerika zagaziwa okuva ku makolero 4 agakola oba agatali-zizimbibwa okutuuka ku 34 ezaali zitegekeddwa, ezikola, oba ezigenda mu maaso. Kino kitegeeza enkulaakulana ey’ekitalo naye ekyaleka Amerika nga yeesigamye ku bintu ebiyingizibwa mu ggwanga okusinga bye yeetaaga bbaatule okutuuka mu 2030.
Okunoonyereza ku bintu ebisookerwako kuwa obuweerero obutakakafu. Battery za sodium-ion, solid-state batteries, n'ebirala ebirala biyinza okukendeeza ku kwesigama ku lithium, naye tekinologiya wa sodium-ion aliwo kati agaba 60-70% zokka ez'amasoboza ga lithium-ion ne 5,000 okusinziira ku 8,000-10,000 enzirukanya y'okucaajinga. Kkampuni ya China eya Jiangling Motors yafulumya mmotoka ez’amasannyalaze ezikozesa bbaatule za sodium-ion mu January 2024 ku buseere bwa doola 8,000-10% okusinga eziringa lithium-naye obuwanvu obutono bukoma ku kukozesebwa ku mmotoka ez’ebanga ettono. Battery za solid-state ziraga nti zisuubiza naye zisigala wala nnyo okuva ku kutongozebwa ku katale ku mutendera.
Okwekenenya kw’ekitongole ky’amasoboza mu Amerika okwa 2024 mu kitongole kya bbaatule ez’omulembe kwazuula obuzibu obw’enjawulo: obusobozi obutono obw’omunda mu mitendera gy’okugaba ebintu, ebirungi by’omuwendo ne IP ebya kkampuni z’Abachina eziri mu ntebe, obuzibu mu nsengeka ku nsaasaanya ya kapito, okukyukakyuka kw’akatale n’obutali bukakafu bw’obwetaavu, obutakula n’obutategeera bulungi akatale, n’obuzibu bw’abakozi mu byombi okuzimba n’okukola emirimu egy’ekiseera ekiwanvu-.
Enkulaakulana y'abakozi eyongera emirundi mingi-ebiziyiza ebibuusibwa amaaso. Okukola bbaatule kyetaagisa obukugu obw’enjawulo mu by’ekikugu. Ebitundu ebirina abakozi abatono bilwana okufuna abakozi mu makolero amapya aga gigafactories, ekikendeeza ku kuyiwa abakozi n’okwongera ku nsaasaanya. Ekitongole ekivunaanyizibwa ku nkulaakulana y’ebyenfuna mu kitongole ky’ebyobusuubuzi kyateeka obukadde bwa ddoola 21 mu Nevada Tech Hub ng’essira liteekeddwa ku bbaatule za lithium-ion ate obukadde bwa ddoola 45 mu South Carolina-Georgia Tech Hub ng’essira liteekeddwa ku kugumira emikutu gy’empuliziganya omuli n’okutereka, nga bakimanyi nti ebituli by’abakozi biteeka mu matigga okugumira emikutu gy’ebintu ng’okuzimba ebifo.
Okuddamu okukola ebintu kuyinza okukkakkana nga kuggaddewo loopu ezimu, ne kitondekawo "ebyenfuna ebyekulungirivu" nga bbaatule ezikoma -eza{1}}obulamu ziwa ebintu ebisookerwako okukola ebipya. Naye, obusobozi bw’okuddamu okukola mu kiseera kino bweyongera mangu okusinga bbaatule eziriwo ku nkomerero-eza -obulamu, ekitondekawo obusobozi obusukkiridde obw’okumpi-ekisanja n’okusazaamu pulojekiti okuyinza okubaawo. Enjawukana: okugwa kw’ebisale bya bbaatule empya kifuula bbaatule z’obulamu obusooka-okusikiriza mu by’enfuna okusinga yuniti z’obulamu obw’okubiri-ziddamu okukozesebwa, ekikendeeza ku nkulaakulana y’ebyenfuna ebyekulungirivu wadde nga ziganyulwa mu butonde.
The Duration Dilemma: Nga Ssaawa Nnya Tezimala
Enkola ezisinga ez’okutereka bbaatule eziteekeddwawo leero ziwa essaawa 2-4 ez’okufuluma ku maanyi agagereddwa. Ebbanga lino limala ku mpeereza nnyingi eza giridi naye lireeta obutakwatagana obw’omusingi n’ebyetaago by’okuggya kaboni abakola batono bye bakkiriza mu lwatu.
Fizikisi erabika nga nnyangu-bbaatule ya 100 MW / 400 MWh esobola okufulumya ku maanyi amajjuvu okumala essaawa 4. Ebbanga lino likwata ku kussa emigugu gy’obutimba akawungeezi mu California ne Texas, ng’amasannyalaze g’enjuba gagwa ng’enjuba egudde naye ng’obwetaavu bw’empewo busigala bungi. Ekwata ku byetaago ebisinga obungi eby’okulungamya emirundi n’okuddamu mu mbeera ez’amangu. Era mu by’enfuna, enkola z’essaawa 4 zikuba ekifo ekiwooma nga obusobozi bw’amasoboza obweyongera bugula ssente ntono buli kWh okusinga obusobozi bw’amasannyalaze, ekizifuula ezisikiriza okukola arbitrage y’amasoboza.
Naye lowooza ku kusoomoozebwa okw’enjawulo: okutuukiriza obwetaavu bw’amasannyalaze ag’akawungeezi mu kiseera ky’obudde obw’ennaku eziwera nga tewali nnyo njuba n’empewo ekola. Kino Girimaani eyolekedde bulijjo mu biseera by’obutiti enkola za puleesa enkulu- ezireeta empewo ennyogovu, esirifu. California yakifuna mu September wa 2022 ng’ebbugumu, omuliro ogw’omu nsiko, n’okuggwaako kw’amasannyalaze bikwatagana. Mu mbeera zino, bbaatule ez’essaawa 4-ziggwaawo akawungeezi nga bukyali ku lunaku olusooka, olwo ne zituula bwereere okumala essaawa eziyinza okuba 48-72 okutuusa ng’okukola amasannyalaze g’enjuba oba empewo kuzzeemu okuzijjuza ekimala. Ekiziyiza kino eky’obudde kiraga ebirungi n’ebibi ebikulu eby’enkola y’okutereka amaanyi ga bbaatule: omulimu ogw’enjawulo ogw’okuvuga obugaali buli lunaku, obusobozi obutamala ku byetaago by’okugumira embeera ey’ennaku eziwera. Kino ekikoma ku bbanga kiraga ekyokulabirako ky’enkola y’okutereka amaanyi ga bbaatule ey’omugaso ebirungi n’ebibi-okusukkuluma ku kuvuga obugaali buli lunaku ate nga kulemererwa ku kugumira ennaku eziwera.
Okunoonyereza kwa NREL ku biseera eby’omu maaso eby’okutereka amaanyi kwekenneenya enkola z’okutereka amaanyi okumala ebbanga eddene-(LDES)-ezifulumya okumala essaawa 10+-nga kizudde nti wadde nga tewali bukakafu ku mirimu emituufu, emigaso egisobola okuvaamu gikula nnyo mu giridi ezitaliimu kaboni nnyo nga zirina okuyingira okw’amaanyi okuzzibwa obuggya. Mu mwaka gwa 2035, nga grids nnyingi bwe zitunuulidde 80%+ amaanyi agazzibwawo, obwetaavu bw’okutereka mu sizoni oba multi-day backup bufuuka obuteewalika. Battery ez'essaawa nnya-zimala teziyinza kuziba wiiki za kiseera ky'obutiti ezikkakkamu, ezirimu ebire.
Ebyenfuna byongera ku buzibu bw’obudde. Okwongera ebbanga ku nkola za bbaatule kigula nga $250-350/kWh ku busobozi bw’amasoboza obw’enjawulo (nga tufudde nti ebyuma by’amasannyalaze bisigala nga tebikyukakyuka). Okwongera enkola okuva ku ssaawa 4 okutuuka ku ssaawa 10 kyongera ebitundu 150% ku ssente z’okutereka amaanyi. Ku intra-day arbitrage, investment eno tetera kusasula-omuwendo ogwakwatibwa gukka nnyo okusukka essaawa 6-8 kubanga enzirukanya z’emiwendo ezisinga eza buli lunaku zibeerawo mu madirisa amampi. Naye olw’okwesigamizibwa kw’omukutu mu kiseera ky’ekyeya ekizzibwawo eky’ennaku eziwera, okumala ebbanga eddene kifuuka kyetaagisa wadde ng’ebyenfuna ebyetongodde binafu.
Tekinologiya omulala atunuulira ekituli kino eky’obudde. Okutereka amazzi mu ppampu (nga kikola ebitundu 90%+ ku busobozi bw’ensi yonna obuwanvu-obuwanvu obuliwo kati) kusobola okutereka ennaku oba wiiki z’amasoboza, naye kyetaagisa ensozi entongole-ensozi, amazzi, n’ebbanga. Okutereka amaanyi g’empewo enyigirizibwa, okutereka ebbugumu, enkola za haidrojeni, ne bbaatule ezikulukuta byonna bisuubiza okutereka ennaku eziwera okutuuka ku sizoni, naye buli emu eyolekedde okusoomoozebwa okw’ekikugu, okw’ebyenfuna, oba okw’okulinnyisa okulemesa okuteekebwa mu nkola amangu.
US ebalirirwamu okwetaaga wakati wa 23-27 GW ez’obusobozi bw’okutereka bbaatule mu mwaka gwa 2030 buli Clean Power 2030 Action Plan-okubuuka okw’amaanyi okuva ku 4.5 GW ku ntandikwa ya 2024. Ne bwe kituuka ku kiruubirirwa kino eky’amaanyi tekikunya butono ku ngulu w’obwetaavu obw’ekiseera ekiwanvu. COP29 yakkiriza ekiruubirirwa ky’okutereka amaanyi mu nsi yonna ekya GW 1,500 omwaka 2030 we gunaatuukira (okuva ku GW 340 leero, nga kw’otadde n’amazzi amakulu aga pampu), ng’emanyi obunene bw’ensimbi ezeetaagisa.
China ekulembedde enkulaakulana ya LDES ng’eyita mu biragiro bya gavumenti n’obusobozi bw’okukola ebintu. Saudi Arabia eteekateeka obusobozi bw’okutereka 14 GW / 53 GWh omwaka 2033 we gunaatuukira okuwagira ekiruubirirwa kyayo eky’amasannyalaze agazzibwawo ebitundu 50%, mu bulambulukufu ng’eyingizaamu enkola eziwangaala-ku mabbali ga bbaatule eza bulijjo. Okweyama kuno kulaga okukimanya nti bbaatule ezikola essaawa 4 teziyinza kusobozesa mu bujjuvu emikutu gy’amasannyalaze agazzibwawo.
Abakola pulojekiti boolekedde obutakwatagana mu biseera. Obutale obuliwo kati buwa empeera obusobozi obw’okuddamu obw’ekiseera ekitono, obw’amangu-nga bbaatule za lithium-ion ez’essaawa 4-ez’esinga mu kuwa. Okutereka okumala ebbanga eddene-kusigala nga kuliyirirwa bubi kubanga obutale bw'obusobozi tebukyusizza kussa muwendo mu bwesigwa bw'ennaku eziwera. Okuteeka ssente mu kutereka essaawa 10+ leero kitera okutegeeza okukkiriza wansi-okudda kw’akatale nga bwe tulinda enkola z’amateeka n’enteekateeka z’akatale okukwata-ekiteeso ekisoomoozebwa eri abakulaakulanya eby’obusuubuzi.
Ekigonjoola eky’ekiseera kizingiramu enkola ez’omugatte: okugatta bbaatule ez’essaawa 4-ne n’entikko za ggaasi, okusukkiridde okuteekebwamu bbaatule okusinziira ku busobozi bw’okuyunga giridi, oba okuteeka mu nkola enkola entonotono eziwera nga zirina enkola z’okucaajinga/okufulumya ezitambula. Tewali n’ekimu ku bino kikola bulungi ku bbanga ly’obudde, naye kiwa ebituli ebiyimirira mu nkola ate nga tekinologiya ow’ekiseera ekiwanvu akuze.
Okusoomoozebwa mu mirimu: Entuufu Emabega wa Specs
Okutereka amaanyi ga bbaatule kiwulikika nga kyangu mu ndowooza-okusasula ng’amasannyalaze ga buseere, okufulumya nga ga bbeeyi. Emirimu egyennyini gizingiramu obuzibu obugwa n’abakulaakulanya abalina obumanyirivu.
Ensobi za inverter, obutoffaali obunafu, n’emiguwa gya modulo egitakwatagana ku ntikko y’olukalala lw’ebizibu by’emirimu ebiremesa enkola okutuusa amaanyi amajjuvu ag’erinnya okumala ebbanga erigere. Bino si biremye bya katyabaga nga byetaaga okukyusibwa mu bujjuvu. Zino nsonga ezitali za maanyi ezikendeeza ku busobozi obuliwo ebitundu 5-15%, okufuula enkola ya MW 100 okuba eky’obugagga kya MW 85-90 ekiremererwa okweyama kw’endagaano.
State-of-charge prediction eraga nti kizibu okusinga bwekisuubirwa. Enkola z’okuddukanya bbaatule zibalirira obusobozi obusigaddewo okusinziira ku vvulovumenti, akasannyalazo, n’ebbugumu, naye obutuufu bukendeera okumala ekiseera ng’obutoffaali bukaddiwa mu ngeri etaali ya kyenkanyi. Enkola eraga 80% state-of-charge mu butuufu eyinza okubaamu 70% oba 90%, okuleeta obutali bukakafu bwa kusindika. Abaddukanya emidumu bwe basaba okufuluma mu bujjuvu nga basuubira essaawa 4 ez’okufulumya, okuzuula oluvannyuma lw’essaawa 3.2 nti obusobozi bwasukkiridde okubalirirwa kireeta akavuyo mu mirimu.
Okulongoosa akatale kyetaagisa pulogulaamu ez’omulembe. ERCOT ne CAISO bakozesa multi-interval optimization eteebereza emiwendo essaawa mu maaso, okusalawo oba bbaatule zirina okucaajinga, okufulumya, okukwata state-of-charge, oba wadde okucaajinga mu ngeri etali ya byanfuna kati nga basuubira emikisa gy'okufulumya egy'omuwendo ogwa waggulu-oluvannyuma. Naye optimization horizons zikakasa limited-real-time obutale butunuulira mu maaso mu ngeri entuufu 1{11}}2 essaawa. Emiwendo egy’amaanyi bwe gituukirira mu ngeri etasuubirwa ku makya, bbaatule zifuluma mangu nnyo, ne ziyingira mu ssaawa ez’akawungeezi ez’oku ntikko nga ziweddewo ekitundu. California ISO's minimum state-of-charge constraints yagezaako okukola ku kino mu kiseera ky'obutiti 2022, naye ekizibu kikyaliyo.
Ebyetaago by’okuddamu kwa frequency bikontana n’ebigendererwa by’okusalawo kw’amasoboza. Abaddukanya emikutu gya bbaatule nga batwala obusobozi bwa bbaatule okuwa okulungamya kwa frequency okutambula obutasalako, buli kiseera nga batereeza ebifulumizibwa okusobola okutebenkeza obwetaavu n’obwetaavu. Naye okutambula kuno kuleeta ebbugumu, okwanguya okuvunda, era kulya embeera-ya-omusannyalazo abaddukanya gye bandyagadde okutereka okufuluma kw’amasoboza ag’omuwendo omungi-. Pulojekiti ezikoleddwa endagaano ku mpeereza eziwera zirina okutebenkeza ebyetaago ebivuganya moment-by-moment.
Endagaano z’okuyunga abantu zireeta ebizibu ebitali bisuubirwa. Ebifo ebiyungibwa ku giridi birina ekkomo ku busobozi-bbaatule eriko obunene bwa MW 100 eyinza okuyungibwa ku node ya giridi ewagira MW 75 zokka, nga kyetaagisa bbaatule okukendeeza ku bunene bw’efulumya wadde nga esobola okukola ebisingawo. Obuzibu bw’ebyuma bya transformer ne substation, oba okweraliikirira kw’ebikozesebwa ku kukosebwa kw’omukutu gw’amasannyalaze mu kitundu, bitera okuwaliriza bbaatule okukola wansi w’obusobozi bwazo obw’ekikugu.
Obudde buleeta obuzibu mu mirimu. Ebbugumu erisukkiridde lyetaaga okunyogoza okw’amaanyi okuziyiza okudduka kw’ebbugumu, okukozesa amaanyi n’okukendeeza ku butimba obufuluma. Ennyonta ennyo ekendeeza ku kemiko ya bbaatule, ekendeeza ku busobozi bw’okufulumya n’obusobozi bw’amaanyi. Obunnyogovu bukosa ebyuma ebikozesebwa mu byuma bikalimagezi. Enfuufu n’omusenyu mu bifo eby’omu ddungu bizibikira ebisengejja empewo n’okusiiga ebipande by’enjuba (ku bifo ebisangibwa awamu). Ensonga zino ez’obutonde tezitera kulabika mu kunoonyereza ku busobozi naye zikwata nnyo ku nkola etuukiddwaako.
Amadirisa g’okuddaabiriza gataataaganya enyingiza. Module za bbaatule, inverter, cooling systems, n’ebyuma ebilondoola byonna byetaaga okwekebejjebwa buli luvannyuma lwa kiseera, okugezesebwa, n’okukyusibwa. Okutwala enkola ya MW 100 okuva ku mutimbagano olw’okuddaabiriza okutegekeddwa kisangula ennaku oba wiiki z’ensimbi eziyinza okuvaamu, naye ng’okwongezaayo okuddaabiriza kyongera obulabe bw’okulemererwa. Okuzuula enteekateeka ennungi ey’okuddaabiriza ekwataganya obwesigwa n’okuyingiza ssente ennyingi kisoomooza abaddukanya emirimu.
Okukakasa omulimu mu ndagaano z'okugaba kuleeta engalo-okusonga nga ensonga zizze. Enkola ya bbaatule obutakola bulungi eyinza okuva ku buzibu mu kukola obutoffaali, obuzibu mu inverter, ensobi mu kugatta, enkola z’okukola ezitali nnungi, oba okugatta kwabyo. Endagaano zitera okusengejja obuvunaanyizibwa mu bakola obutoffaali, abagatta enkola, n’abaddukanya-okusalawo ensobi n’okussa mu nkola eby’okugonjoola bisobola okuyita mu myezi egy’okukaayana ng’enkola egenda mu maaso n’okukola obubi.
Obukugu mu bakozi bukoma ku nkola y’emirimu. Okuddukanya ekifo ekinene eky’okuteeka bbaatule kyetaagisa okutegeera ebyuma by’amasannyalaze, enkola y’omukutu, ensengeka y’akatale, kemiko wa bbaatule, n’okuddukanya ebbugumu. Abakugu batono abalina obukugu buno bwonna. Ebifo ebiddukanyizibwa abakozi abatalina bumanyirivu oba abakola emirimu gya O&M abagoloddwa bitera okutuuka ku bitundu 70-80% ku mutindo oguyinza okubaawo si kuyita mu buzibu bw’ebyuma wabula ensobi z’emirimu-okusasula ssente mu biseera ebikyamu, okuddamu mu bukyamu obubonero bw’akatale, oba okuddukanya obubi ebbugumu.
Okulongoosa mu pulogulaamu za kompyuta kuleeta ensonga ezitategeerekeka. Ebintu eby’omulembe ebiteekebwa mu BESS byesigamye ku pulogulaamu ezifuga ez’omulembe abazikola ze zitereeza buli kiseera okulongoosa omulimu oba okutereeza obuzibu. Naye buli kulongoosa kuli mu kabi okuleeta ebizibu ebipya-okulongoosa okulongoosa ebipimo by’omusolo kuyinza okuleeta obutakwatagana mu butoffaali mu butamanya, oba ekitundu eky’okugatta akatale kiyinza okutaputa obubi obubonero bwa ISO. Ebiteekebwamu birina okutebenkeza okukuuma software nga ya mulembe n'okutebenkera.
Obutali bukakafu mu mateeka mu butale bw’ensi yonna
Obuwagizi bw’enkola bwavuga okukula okw’amaanyi okw’okutereka bbaatule, naye enkola z’amateeka zilwana okukwatagana n’okuteekebwa mu nkola, ekireeta obutali bukakafu obukaluubiriza okusalawo ku by’okusiga ensimbi.
Etteeka lya Amerika erikendeeza ku bbeeyi y’ebintu erya 30% ku musolo gw’okusiga ensimbi ku nkola z’okutereka ezeetongodde lyakyusa ebyenfuna bya pulojekiti mu kiro kimu bwe lyayisibwa mu 2022. Emabegako, okutereka okugatta n’amasannyalaze g’enjuba kwalina ebisaanyizo okukendeeza ku musolo, naye enkola ezeetongodde tezaakola. Ebisaanyizo bya IRA byafuula enkumi n’enkumi za pulojekiti okusobola okukola mu by’ensimbi, ekyavaako okukulaakulana okuliwo mu kiseera kino. Naye gavumenti ya Trump ejja okusobola okusumulula ebisikiriza bya IRA-ebiseera n’obuwanvu tebimanyiddwa-kireeta okweraliikirira eri pulojekiti eziri mu nkulaakulana.
Okukyukakyuka kw’emisolo kwongera obutali bukakafu. BloombergNEF modeled scenarios where planned 2026 Section 301 tariff increases elinnyisa ssente 60% bw’ogeraageranya ne 2025 singa Amerika essa mu nkola omusolo gwa 60% ku battery racks eziyingizibwa okuva e China. Kino kyandikomyewo ssente ku mitendera gya 2024, ekiyinza okukendeeza ku mutindo gw’okuteekebwa mu nkola. Okunoonyereza ku antidumping okwatongozebwa January 2025 ku bintu bya anode eby’e China kuyinza okuvaamu emisolo ekifuula ebitundu by’e China-ebiva mu China obutaba bya byanfuna, ekiwaliriza okuddamu okusengeka amangu enkola y’okugaba ebintu.
Enkola ya Bulaaya ey’okulungamya ya njawulo naye ereeta okusoomoozebwa okukwatagana. Etteeka lya EU erikwata ku bbaatule liragira okunoonyereza okutuufu ku nsibuko ya lithium, cobalt, nickel, ne natural graphite, okuwandiika ebigere bya kaboni, ebyetaago by’ebintu ebizzeemu okukozesebwa, n’omutindo gw’ebintu. Ebisaanyizo bino bitumbula obuwangaazi era bigenderera okuyamba abakola ebintu mu Bulaaya okuvuganya, naye byongerako ssente z’okugoberera amateeka n’okulwawo okuweebwa satifikeeti ebikendeeza ku pulojekiti.
Ennyiriri z’okuyungagana ziraga ekizibu eky’ensi yonna. Mu Amerika, pulojekiti z’okukola n’okutereka GW ezisoba mu 3,000 zituula mu nnyiriri z’okuyungibwa-roughly triple current installed capacity. Okunoonyereza n’okulongoosa giridi kutwala emyaka, nga pulojekiti z’okutereka zirinda emyaka 3-5 ku kigero okuva ku kukozesa okutuuka ku kuwa amaanyi. Ekiragiro kya FERC 2023 kigezaako okutereeza enkola eno, naye okussa mu nkola kwawukana okusinziira ku ISO era amakampuni agakola ku by’obulamu gasika ebigere ku nnongoosereza eziyinza okwanguya okuvuganya.
Dizayini y’akatale esigadde emabega mu busobozi bwa tekinologiya. Obutale obusinga obungi obw’obusobozi bwakolebwa ku jenereta ez’ebbugumu nga zirina enkola y’okusindika eteeberezebwa n’ebiseera by’okutambula essaawa eziwera. Battery ziddamu mu milliseconds era zisobola okukyuka wakati w’okucaajinga n’okufulumya emirundi mingi buli ssaawa. Amateeka agaliwo gatera okulemererwa okuliyirira obulungi obusobozi buno obw’enjawulo oba, ekisinga obubi, okubonereza-obutale obumu obw’obusobozi bubala obuzibu bw’amaanyi ga bbaatule okusinziira ku bubonero bwago obw’okubeerawo wadde nga bbaatule zeesigika zituusa amaanyi agaweereddwayo okumala ebbanga erigere.
Omutindo gw’obukuumi gugenda mu maaso n’okukyukakyuka, ne gutondawo ebigendererwa ebitambula. UL 9540 ne 9540A zaateekawo enkola z’okugezesa obukuumi bw’omuliro ezimanyiddwa ennyo mu North America, naye emitendera gino gitereezebwa buli kiseera ng’ebintu ebibaawo biraga ebituli. Pulojekiti ezitegekeddwa okutuukana n’omutindo gwa 2022 ziyinza okwolekagana n’ebisaanyizo ebipya nga tezinnaggwa okuzimba, ne kyetaagisa okuddamu okuzikola mu ngeri ey’ebbeeyi. Abawandiisi ba yinsuwa beeyongera okussaawo ebisaanyizo by’obukuumi ebisukka ku bipimo ebitono ebiragirwa, ne bongerako ssente ezitaali mu mbalirira.
Embeera ya China ey’okulungamya egatta obuwagizi obw’amaanyi n’okukyusakyusa okw’amangu. Gavumenti yalagira nti pulojekiti z’amasannyalaze agazzibwawo mulimu okutereka amasannyalaze (ebiseera ebisinga ebitundu 10-20% ku busobozi obuzzibwawo), ekivuga okuteekebwa mu nkola kwa BESS okw’amaanyi. Wabula ab’obuyinza era baassa ekkomo ku miwendo ku nkola za bbaatule okutangira okuteebereza, ne banyigiriza emigabo gy’amakolero, n’oluusi n’okuyimiriza emirimu ku bifo ebiremereddwa okwekebejja obukuumi awatali kulabula. Kino kireeta embeera ng’obuwagizi buyinza okuba obw’amaanyi naye amateeka gakyuka mu ngeri etategeerekeka.
Koodi za giridi ziraga ebisaanyizo eby’ekikugu bbaatule bye zirina okutuukiriza, naye bino byawukana nnyo okusinziira ku buyinza. Ebipimo by’okuddamu kwa frequency, okuvuga kwa vvulovumenti-okuyita mu busobozi, emiwendo gya ramp, n’enkola z’empuliziganya byawukana wakati wa ERCOT, CAISO, PJM, koodi z’omukutu gw’Abazungu, ne NEM ya Australia. Abakola bbaatule ezikola dizayini y’obutale bw’ensi yonna balina okusikiriza enjawulo zino, okwongera ku nsaasaanya, oba okufulumya enkyusa ez’enjawulo mu kitundu-, okukendeeza ku byenfuna by’omutindo.
Okukkiriza kiraga nti tekitegeerekeka. Gavumenti z’ebitundu eziyolekedde ekiteeso ky’okutereka bbaatule zitera obutaba na bukugu okwekenneenya akabi akali mu kulonda, ekivaako okukkiriza sitampu za kapiira- oba okwegendereza okuyitiridde. Okuwakanya abantu b’omukitundu oluvannyuma lw’omuliro ogw’amaanyi -kuvuddeyo mu bitundu ebiwerako, ng’abatuuze baagala amabanga ag’okudda emabega gasukka ekkomo ery’omugaso oba okuzibikira ddala pulojekiti. Ebitundu ebimu byassaawo enkola ey’okuyimiriza okumala akaseera ku kukkiriza okutereka bbaatule oluvannyuma lw’ebintu ebibaawo mu by’okwerinda, ne zifuula enkulaakulana envumbo awatali kulowooza ku mutindo gwa pulojekiti ssekinnoomu.
Ebyetaago by’obukuumi ku mikutu gya yintaneeti bikiikirira ensalo y’okulungamya egenda okuvaayo. Omutindo gwa NERC CIP gukola ku bbaatule ezimu eza grid-scale naye okussa mu nkola kusigala nga tekukwatagana. Nga okutereka kweyongera okubeera okukulu mu mutimbagano-, subira enkola z’obukuumi ku mikutu gya yintaneeti ezikakatako, ebyetaago by’okubala ebitabo, n’ebiyinza okuziyiza ebyuma ku nkola z’okufuga ensibuko z’Abachina-byonna nga byongera ku nsaasaanya y’okugoberera n’obuzibu bwa pulojekiti.
Ebikosa obutonde bw’ensi okusukka okukendeeza ku kaboni
Okutereka bbaatule kisobozesa okugatta amaanyi agazzibwawo, naye tekinologiya ono aleeta okulowooza ku butonde bw'ensi ebikaluubiriza erinnya lyayo erya "kijanjalo".
Ebikosa eby’okusima eby’obugagga eby’omu ttaka bitandika okwekenneenya enzirukanya y’obulamu. Okuggya lithium nga tuyita mu kufuumuuka kw'omubisi gw'enjuki mu South America "lithium triangle" kulya amazzi amangi mu bitundu ebikalu, ekikosa amazzi g'omu kitundu era nga kivuganya n'ebyobulimi n'ebitundu ku by'obugagga eby'ebbula. Buli ttani ya lithium ekolebwa yeetaaga okufuumuula ggaloni z’omubisi gw’enjuki nga 500,000. Mu ddungu lya Atacama mu Chile, emirimu gy’okusima eby’obugagga eby’omu ttaka gyayongera ku nsonga z’ebbula ly’amazzi ezikosa abantu enzaalwa.
Okusima lithium mu mayinja amakalu mu Australia kuleeta ebikosa eby’enjawulo-okutaataaganyizibwa kw’ettaka kw’okusima okwa bulijjo, okukozesa amaanyi, n’okukola kasasiro. Okusima cobalt mu Democratic Republic of Congo kuzingiramu ebikwata ku ddembe ly’obuntu ebiwandiikiddwa obulungi omuli okukozesa abaana, embeera y’emirimu etali nnungi, n’okwonooneka kw’obutonde bw’ensi okuva mu mirimu gy’okusima eby’obugagga ebitali bitongole. Okusima Nickel mu Indonesia kivuddeko okutema ebibira n’okuleetawo ensonga za kasasiro ow’obutwa.
Okukola bbaatule kivaamu omukka gwa kaboni omunene. Okukola obutoffaali bwa bbaatule kyetaagisa enkola ezikozesa amaanyi-amasoboza amangi-okusiiga obusannyalazo, okukuŋŋaanya obutoffaali, enzirukanya y’okutondeka-etera okukolebwa amasannyalaze g’amanda mu China. Okunoonyereza okumu kwabalirira nti buli kWh ya CO2 kkiro 61-106 okuva mu kukola, ekitegeeza nti enkola ya bbaatule ya MWh 100 ekola ttani za CO2 6,100-10,600 nga tennatereka kilowatt-hour yaayo esooka. "Ebbanja lino erya kaboni" lyetaaga okusengulwa kw'amanda okumala emyaka 1-3 nga bbaatule tennatuuka ku migaso gya kaboni omutuufu.
Enkomerero-ey'okusuula obulamu ereeta okusoomoozebwa okutannaba kugonjoolwa. Battery za lithium-ion zirimu ebintu eby’obutwa ebyetaagisa okubikwata n’obwegendereza. Wadde nga mu ndowooza bisobola okuddamu okukozesebwa, emiwendo gy’okuddamu okukozesebwa mu kiseera kino gisigala wansi wa bitundu 5% mu nsi yonna ku bbaatule za EV ne ezitereka. Okuddamu okukola (smelting) mu ngeri ya pyrometallurgical (okusaanuusa) kuzzaawo ebyuma naye ne kufiirwa lithium era kyetaagisa ebbugumu eringi. Hydrometallurgical recycling (chemical extraction) ezzaawo ebintu ebisingawo naye nga ekozesa eddagala ery’obulabe era efulumya amazzi amakyafu agacaafu. Okuddamu okukola obutereevu (okwawula mu mubiri n’okuddaabiriza) kulaga okusuubiza naye kusigala nga kugezesa.
Ebyenfuna biremesa enkola y’okuddamu okukola ebintu. Okuggya lithium okuva mu bbaatule ezisembayo-eza-obulamu kigula ssente nnyingi okusinga okusima lithium empya ng’emiwendo gitudde wansi wa doola 20,000 buli ttani. Mu kiseera ky’okulinnya kw’emiwendo gyokka okuddamu okukola ebintu kwe kufuuka okusikiriza mu by’enfuna awatali nsimbi za buyambi. Kino kitegeeza nti bbaatule ezisinga ezituuka ku nkomerero-ez'obulamu ziteekebwa mu sitoowa, zisuulibwa mu nsi ezirina amateeka agatali ga bulijjo, oba zisindikibwa mu nsi yonna nga "kasasiro."
Ebikosa enkozesa y’ettaka bikulu ku mutendera gw’ebikozesebwa. Okuteekebwako bbaatule ya MW 100 / MWh 400 kutwala yiika nga 5-10-ezitono nnyo okusinga obusobozi bw’enjuba oba empewo obwenkanankana, naye si kya makulu. Pulojekiti eziteekebwa ku bifo ebya kitaka oba ettaka ly’amakolero zikendeeza ku buzibu bw’obutonde, naye ebifo ebimu ebiteekebwamu bisengula ebifo eby’obutonde oba ettaka ly’ebyobulimi. Ebiteekebwa mu ddungu byetaaga okunoonyereza ku bifo ebibeera n’ebikolwa eby’okukendeeza ku bika by’ebisolo ebikuumibwa.
Obujama bw’amaloboozi bukosa ebitundu ebiriraanyewo. Inverters ne cooling systems zikola constant hum esobola okutwala ebikumi n’ebikumi bya mita. Wadde nga kisirifu okusinga ttabiini za ggaasi oba siteegi entonotono, okukola kwa 24/7 kwa ffaani ezinyogoza n’okuwuuma kwa tulansifooma kuleeta okunyiiza mu bitundu by’abantu. Enfuga ezimu ziteekawo ekkomo ku maloboozi nga kyetaagisa ebiziyiza amaloboozi eby’ebbeeyi oba amabanga agadda emabega.
Ebikolwa ebirabika bireeta okuwakanyizibwa kw‟abantu b‟omukitundu. Ennyiriri za modulo za bbaatule eziweza konteyina-obunene bwa konteyina-, okusiba ebikomera okwetooloola, amataala, n'ebyuma ebikwatagana nabyo tebirina kusikiriza. Wadde nga tezizibuwalira nnyo okusinga ebyuma ebikuba empewo oba eminara egy’okunyogoza, ebifo ebiteekebwamu bbaatule byolekagana n’okuwakanyizibwa kwa NIMBY mu bitundu ebirabika obulungi oba eby’omuwendo omungi-. Okwekweka oba okulabirira ekifo kyongera ku ssente.
Ensimbi z’amasannyalaze okuva mu byuma bya vvulovumenti eya waggulu-byetaaga okwekenneenya. Wadde nga enkola za bbaatule zikola EMF eya wansi okusinga layini ezitambuza amasannyalaze, abatuuze okumpi n’ebifo ebiteekebwamu oluusi balaga okweraliikirira kw’ebyobulamu. Okulaga obukuumi kyetaagisa okunoonyereza ku kupima n‟okutuuka ku bantu-ebiseera ne ssente tebitera kuteekebwa mu mbalirira emala.
Okukozesa amazzi okunyogoza kirabika nga kitono naye gakuŋŋaanyizibwa ku minzaani. Ebifo ebimu ebinene ebiteekebwamu bikozesa okunyogoza okufuumuuka, nga bikozesa enkumi n’enkumi za ggaloni buli lunaku mu bitundu ebitaliimu mazzi-. Kino kireeta okusika omuguwa mu bitundu nga Arizona oba Nevada ng’amazzi agavuganya geetaaga edda okunyigirizibwa.
Ebikosa entambula bikwata ku nkola y’okugaba ebintu. Okusindika ebitundu bya bbaatule mu nsi yonna-obutoffaali okuva e China, inverter okuva e Bulaaya, tulansifooma okuva mu North America-kivaamu omukka gwa kaboni n’omugotteko gw’enguudo ennene bwe bituusibwa mu bifo. Emmeeri ezitwala konteyina, loole za dizero, n’ebikozesebwa mu kussaako ebintu byonna byokya amafuta g’ebintu ebikadde, ne byongera ku kaboni ali mu nkola eno.
Okubala ebitabo by’obulamu bwa kaboni kukyakubaganyizibwako ebirowoozo. Okwekenenya okulina essuubi kulaga nti bbaatule zituuka ku migaso gya kaboni omutuufu mu myaka 1-2 nga zisengula amanda. Okwekenenya okutali kwa ssuubi nga kufaayo ku bucaafu obufuluma mu makolero, okufiirwa mu kutambuza, n’obulamu obumpi-okusinga-obusuubirwa kwongera okusasula okutuuka ku myaka 4-6. Amazima gaawukana okusinziira ku maanyi ga kaboni mu giridi, enkola entuufu ey’obugaali, n’ensonga z’obulamu ezituukiddwaako ezaawukana ennyo okusinziira ku kuteekebwa.
Enkola y’akabi mu by’ensimbi: Bamusigansimbi kye boolekagana nabyo mu butuufu
Abakola bassa okutereka bbaatule ng’ebikozesebwa eby’akabi akatono-, naye ensonga z’ebyensimbi zireeta obutali bukakafu obusomooza ensimbi za pulojekiti eza bulijjo.
Enkyukakyuka mu nfuna y’esinga okweraliikiriza bamusigansimbi. Okusalawo kw’amasoboza kisinziira ku kusaasaana kw’emiwendo okwawukana buli lunaku, mu sizoni, ne mu nsi. Battery za ERCOT ezakwata $150/MWh spreads mu 2022 zaayolekagana ne $40/MWh spreads ku ntandikwa ya 2024 nga obusobozi obw’enjawulo bubooga mu. Ensasula y’okuddamu emirundi mingi ekendeera ng’obusobozi obusinga bugoba emikisa gy’obuweereza gye gimu. Okuteebereza kw’enyingiza okw’ekiseera ekiwanvu-kuyingizaamu okuteebereza okw’amaanyi ku kukyukakyuka kw’emiwendo okuwangaala ebyafaayo kwe biraga nti tekutera kutuukirira.
Obulabe bwa tekinologiya bukosa emiwendo. Omulimu gwa bbaatule gukendeera okumala ekiseera, naye emiwendo gy’okuvunda gisinziira ku ngeri gy’ekolamu etagenda kumanyibwa okumala emyaka. Battery esuubirwa okumala emyaka 15 eyinza okwetaaga okwongerwako ennyo mu mwaka 8, mu bwangu n’esaba obukadde n’obukadde bwa kapito atategekeddwa. Ekirala, okulongoosa mu kemiko oba ensengeka empya kuyinza okufuula ebiteekebwawo ebiriwo okuggwaawo mu by'enfuna nga tebinnaggwaako-bulamu, okusiba eby'obugagga.
Obulabe bw’enkola bwe businga obunene. Ebbanja ly’omusolo ku nsimbi 30% lilongoosa nnyo amagoba ga pulojekiti, naye omuwendo gw’omusolo gusinziira ku kuba n’omusolo ogumala okuyingiza ebbanja oba okuzuula emikwano gy’omusolo-bombi nga bikaluba mu kiseera ky’okusereba kw’ebyenfuna. Emitendera gy’ebbanja-okuggyawo, okukendeeza ku miwendo, oba kaweefube wa Republican okusazaamu ebiragiro bya IRA ayinza gut ebyenfuna bya pulojekiti wakati-okuzimba.
Obulabe bw’abavuganya bweyolekera mu ngeri eziwera. Abaddukanya emidumu oba amakampuni agakola ku by’amasannyalaze agassa omukono ku ndagaano z’obusobozi bayinza okwolekagana n’okunyigirizibwa mu by’ensimbi, okukendeeza ku mutindo gw’ebbanja, oba okugwa, ne kireka bbaatule nga zirina invoice ezitasasuddwa. Kino kyaliwo mu mbeera ezimu ez’amasannyalaze g’abasuubuzi mu kiseera ky’obuzibu bw’amasannyalaze mu California mu 2001-2002 ate gye buvuddeko n’ebbanja ly’amasannyalaze okwonooneka mu butale obukyakula.
Okubikkulwa kw’abasuubuzi kwe kuleeta obutali bukakafu obusinga obunene. Pulojekiti ezitaliiko ndagaano za bbanga ddene-zisinziira ddala ku nfuna y’akatale ka spot, okulaga bamusigansimbi okugwa kw’emiwendo, okuvuganya okuva mu bapya abayingira, oba enkyukakyuka mu mateeka okumalawo emikutu gy’enyingiza. Ensimbi ezikuuma (conservative financing) zeetaaga oba ensimbi ezikoleddwa mu ndagaano ezibikka ebitundu 70%+ eby’okusasula amabanja oba ensimbi z’omugabo ezisukka mu 50%-zombi nga zikendeeza ku magoba oba obusobozi bwa pulojekiti.
Ebisale bya yinsuwa n’okubeerawo bikyuka mu ngeri etategeerekeka. Oluvannyuma lw’ebintu ebyagwawo mu Moss Landing n’ebirala, yinsuwa zaanyweza omutindo gw’okuwandiika, ne bongera ku ssente ezisasulwa, era ne bassaawo ssente ennyingi eziggyibwako. Abamu ku bakola baloopa nti ebisale bikubisaamu emirundi ebiri omwaka-ku-omwaka oba okubikka okufuuka okutafunibwa ku bbeeyi yonna ku nsengeka ezimu. Kino kifuula ebiteberezebwa nga 1-2% annual premiums mu 3-5% reality, kikosa nnyo entambula y’ensimbi.
Obutali bukakafu ku nsaasaanya y’okuyungagana buleeta obulabe ku mbalirira. Okubalirira okusooka okw’okuyunga emikutu gy’empuliziganya kuyinza okulowooza nti obusobozi obuliwo bumala, naye okunoonyereza mu bujjuvu kulaga nti kyetaagisa okulongoosa tulansifooma, okulongoosa enkola y’obukuumi, oba okukola emirimu gya siteegi entono nga gimalawo obukadde n’obukadde okusinga ku mbalirira. Pulojekiti ezimu zoolekedde engabanya "okulongoosa omukutu" nga zirina okusonda ssente okulongoosa mu kutambuza nga ziganyula abakozesa abawera-ebisale ebiyinza okusukka enkola ya bbaatule yennyini.
Okulwawo okutuusa ebyuma kutaataaganya ebiseera by’ensimbi. Okutaataaganyizibwa mu nkola y’okugaba ebintu, ensonga z’amakolero, oba okulwawo kwa kasitooma kiyinza okuzza ennaku z’okutandika okukola emabega emyezi 6-18. Ebbanja ly’okuzimba lifuna amagoba awatali kuyingiza ssente, era endagaano z’okuggyawo ssente ziyinza okubeeramu ennaku ezisembayo nga singa zisubwa, zireeta ebibonerezo oba eddembe ly’okukomya. Mu kiseera kya 2023-2024 pulojekiti nnyingi zaalwawo olw’ebbula lya tulansifooma n’omugotteko gw’emmeeri.
Ebyewuunyisa ku nsaasaanya y’emirimu bivaayo oluvannyuma lw’ekiseera. Embalirira za O&M eziteeberezebwa eza $5-8/kW-omwaka zitera okulaga nti zirina essuubi nga zoolekedde emiwendo gy’okulemererwa egy’oku ntikko-okusinga bwe gyali gisuubirwa, ssente za layisinsi za pulogulaamu ezitasooka kuteekebwamu, oba okuwoza kwa ggaranti abakola ebintu kwe bakaayana okumala emyezi. Ebiwandiiko ebituufu ebikwata ku bumanyirivu mu mirimu bisigala nga bitono, ekifuula okuteebereza omuwendo omutuufu okukaluba.
Obulabe bw’okuddamu okusasula ssente bukosa pulojekiti ezikozesebwa (levered projects). Ebbanja ly’okuzimba erisooka litera okwetaaga okuddamu okusasula mu bbanja ery’ekiseera ekiwanvu-oluvannyuma lw’emyaka 2-3 egy’ebyafaayo by’emirimu. Naye singa pulojekiti ekola obubi ebisuubirwa oba amagoba ne galinnya nnyo, okuddamu okusasula ssente ku bukwakkulizo obulungi tekisoboka, ekiwaliriza abawagizi okussaamu emigabo emirala oba okwolekagana n’okusasula.
Obukwakkulizo bw’enkola y’okufuluma buziyiza bamusigansimbi ab’obwannannyini. Akatale ak’okubiri ak’eby’obugagga bya bbaatule ezikola kasigala nga kagonvu bw’ogeraageranya n’amasannyalaze g’enjuba oba ag’empewo. Okugereka emiwendo gya bbaatule ezikola kiraga nti kizibu olw’obutali bukakafu ku kwonooneka ne tekinologiya agenda akulaakulana amangu. Bamusigansimbi abasuubira okukwata emyaka 5-7 nga tebannafuluma bayinza okusanga abaguzi abatono oba emiwendo wansi wa proforma projections.
Obulabe bw’okukendeeza ku butale buva mu butale obuyingira ennyo. Nga okuteekebwa mu nkola kwa bbaatule kweyongera, abaddukanya emidumu bayinza okukendeeza ku kucaajinga mu biseera eby’ebbeeyi embi oba okussa ekkomo ku kufulumya bbaatule mu mbeera ezisukkiridde. California ISO yassa mu nkola ebyetaago ebitono ku yintaneeti n'okusasula akatale mu kiseera ekituufu -okukosa okusindika bbaatule. Ekkomo lino ery’emirimu likendeeza ku nfuna etuukiddwaako wansi w’ebikozesebwa nga tuteebereza okusindika okutaliimu kuziyizibwa.
Enkola endala ez’ebyekikugu ne tekinologiya avuganya
Lithium-ion efugira utility-scale storage leero, naye alternatives zitunuulira niches ez'enjawulo oba zigenderera okusengula abali mu ntebe nga bayita mu by'enfuna oba enkola ey'oku ntikko.
Battery za sodium-ion zikiikirira omusomooza ow'ekiseera ekitono. Okukozesa sodium omungi mu kifo kya lithium ow’ebbula kikendeeza ku nsaasaanya y’ebintu ebisookerwako n’obulabe bw’okugabira abantu ebintu. CATL ya China yatandika okukola mu bungi mu 2023, nga Jiangling Motors etongoza sodium-ion EVs ku $8,000-10% ku buseere okusinga lithium equivalents-mu January 2024. Wabula, density y’amasoboza eddukira 60{18}}70% ku lithium-ion, era obulamu bwa cycle butuuka ku 5,000 zokka enzirukanya okusinziira ku 8,000-10,000 ku lithium. Kino kifuula sodium-ion okusaanira okutereka okutambula nga ekifo tekiziyiziddwa naye nga kikyali wansi ku nkola ezeetaaga density y’amasoboza esingako.
Battery ezikulukuta zitunuulira enkola ezimala ebbanga eddene-nga lithium-ion eraga nti si ya byanfuna. Battery za Vanadium redox zitereka amaanyi mu electrolytes ez’amazzi, nga obusobozi busalibwawo okusinziira ku sayizi ya ttanka nga tebukwatagana na byuma bya maanyi. Kino kisobozesa okumala essaawa 8-12 mu by'enfuna. ESS Inc., Invinity Energy Systems, n’abalala bateeka mu nkola bbaatule ezikulukuta okusobola okugatta amasannyalaze agazzibwawo n’okukozesa microgrid. Naye density y’amasoboza entono (50-70% of lithium-ion), enkola enzibu ez’okukwata amazzi, n’ebisale ebinene eby’omu maaso bikoma ku kwettanira. Ebikozesebwa mu kiseera kino byonna awamu biwera ebikumi bitono ebya megawatts mu nsi yonna okusinziira ku bikumi n’ebikumi bya gigawatts za lithium-ion.
Okutereka amaanyi g’empewo enyigirizibwa (CAES) kuwa ekipimo ekinene n’obudde. Amasannyalaze agasukkiridde ganyiga empewo mu mpuku eziri wansi w’ettaka, oluvannyuma ne gagifulumya nga gayita mu ttabiini okukola amaanyi. Ebifo bibiri ebikola biriwo-Huntorf, Germany (321 MW, 1978) ne McIntosh, Alabama (110 MW, 1991)-nga biraga tekinologiya akakasiddwa. Naye ebizibu by’ebitundu ebyetaagisa eby’ettaka ebisaanira wansi w’ettaka, ssente ennyingi ezisaasaanyizibwa mu kapito, n’okufiirwa kw’ebbugumu mu kiseera ky’okunyigiriza ekoma ku kuteekebwa mu nkola. Advanced adiabatic CAES designs zisuubiza 70%+ efficiency okusinziira ku 50% ku CAES eya bulijjo naye zisigala nga za nkulaakulana.
Okutereka amazzi mu ppampu kufuga obusobozi obw’ekiseera ekiwanvu-mu nsi yonna nga 150+ GW etekeddwa-90% ku kutereka amaanyi mu nsi yonna. Tekinologiya akakasiddwa, 80+ obulamu bw’emyaka, n’obulungi bwa 70-85% okwetoloola-olugendo bifuula amazzi agapambiddwa omutindo gwa zaabu. Naye, pulojekiti empya zisanga okuwakanyizibwa kw’obutonde bw’ensi, okukkiriza okumala emyaka kkumi-, okusaasaanya obuwumbi bwa ddoola obuwera-, n’obuzibu bw’ebitundu obwetaagisa ensozi, amazzi, n’enkula y’ensi entongole. Dizayini eziggaddwa nga zikozesa ebidiba ebikoleddwa abantu zikola ku bimu ku bikwata ku butonde bw’ensi naye zongera ku nsaasaanya. Pulojekiti empya ntono ezikola amazzi aga pampu ezigenda mu maaso mu butale obukulaakulanye wadde nga zirina obusobozi obw’enzikiriziganya.
Okutereka haidrojeni kuwa obusobozi bwa sizoni bbaatule bwe zitasobola kukwatagana. Ebisengejja amasannyalaze bikyusa amasannyalaze agasukkawo agazzibwawo ne gafuuka haidrojeni, agayinza okuterekebwa mu ttanka oba wansi w’ettaka oluvannyuma ne gayokebwa mu ttabiini oba okuddamu okukyusibwa ne gafuuka amasannyalaze nga gayita mu bifo ebiyitibwa fuel cells. Obulung’amu bw’olugendo lw’okudda n’okudduka obwa 30-40% bufuula haidrojeni obutaba bwa ssente mu kuvuga obugaali buli lunaku, naye okutereka mu sizoni oba okutereka wiiki eziwera-, haidrojeni eyinza okulaga nti yeetaagibwa. Ensimbi ezisaasaanyizibwa mu kiseera kino zisigala nga ziwera-eza haidrojeni eya kiragala egula doola 4-7/kkiro okusinziira ku ddoola 1-2/kg ku haidrojeni enzirugavu okuva mu ggaasi ow’obutonde-naye okugwa kw’ebisale by’amasannyalaze n’emiwendo gy’amasannyalaze agazzibwawo biyinza okukyusa ebyenfuna mu mwaka gwa 2030.
Okutereka amaanyi g’ebbugumu kuziba ebitundu by’ebbugumu n’amasannyalaze. Enkola z’omunnyo ogusaanuuse, ezikozesebwa mu bifo ebikola amasannyalaze g’enjuba agasengekeddwa, zitereka ebbugumu okumala essaawa oba ennaku olwo ne zikola amasannyalaze nga ziyita mu ttabiini z’omukka. Ebintu ebikyusa emitendera, okutereka ebbugumu mu ppampu, n’endowooza endala zigenderera okumala essaawa 8-24. Ebisale biyinza okukendeeza ku bbaatule ez’okukozesa ebbugumu, naye okukola amasannyalaze okudda n’okudda okukola obulungi ebitundu 50-70% n’obutakula mu tekinologiya bikoma ku kuteekebwa mu nkola. Malta Inc., ewagirwa Google, ekola okutereka amaanyi g’ebbugumu mu ppampu kyokka pulojekiti z’ebyobusuubuzi zikyaliyo emyaka mingi.
Okutereka amaanyi ag’ekisikirize kukozesa amasannyalaze agasukkiridde okusitula bulooka enzito, okutereka amaanyi agayinza okubaawo, olwo ne gakka wansi okukola amaanyi. Energy Vault yazimba pulojekiti ez’okwolesa ng’ekozesa cranes ne seminti, ate abalala ne bateesa ku buzito mu bikondo by’ebirombe. Fizikisi ekola, naye obuzibu bw’ebyuma, density y’amasoboza entono, n’obwesigwa obutakakasibwa ku minzaani bikoma ku kwagala. Ebiteekebwawo mu kiseera kino byonna awamu mpozzi 100 MW mu nsi yonna.
Okutereka amaanyi g’empewo ey’amazzi (LAES) kunyogoza empewo okutuuka ku diguli -196 nga tukozesa amasannyalaze agatali ku ntikko, ne gagatereka mu ttanka ezitaziyiza, olwo ne gagaziya empewo ey’amazzi okuvuga ttabiini. Highview Power yatandika okukola ekyuma kya MW 50 mu Bungereza, nga kiraga obusobozi bwa grid-scale. Obulung’amu bw’okudda n’okudda obwa 50-70% busukka empewo enyigirizibwa naye nga bugwa ku bbaatule. LAES tekyetaagisa buzibu bwonna mu bitundu era ekozesa tekinologiya wa cryogenic akakasiddwa mu makolero, naye ssente ezisaasaanyizibwa mu kapito n’obuzibu bw’okukola obulungi bikendeeza ku kwettanira.
Flywheels ez’ebyuma ziwuuta rotors ku 10,000-50,000 RPM, nga zitereka amasoboza ag’ekiddukano okusobola okufuluma amangu. Beacon Power ekola amabibiro agafuga frequency ya flywheel 20 MW mu Pennsylvania ne New York, nga galaga okuddamu okw’amangu n’obusobozi bw’okuvuga obugaali obuzito (100,000+ cycles). Naye okutereka amaanyi kugula doola 2,000-10,000/kWh okusinziira ku doola 150-300/kWh ku bbaatule, ekikoma ku flywheels ku mutindo gw’amaanyi n’ebifo ebitereeza frequency ng’obudde bwa sikonda okutuuka ku ddakiika bumala.
Supercapacitors ne ultracapacitors zitereka amasoboza mu ngeri ya electrostatically nga mu bukulu tezirina kkomo ku cycling, millisecond response, n’okugumiikiriza ebbugumu okugazi. Naye density y’amasoboza 1/20th ya batteries zizifuula ezitasaana kutereka grid, relegating supercapacitors ku mutindo gw’amasannyalaze n’okukozesa okuyunga grid okwetaaga density y’amaanyi esukkiridde n’obudde obutono.
Ensi y’okuvuganya eraga nti okufuga kwa lithium-ion kujja kugenda mu maaso okumala essaawa 2-6 ez’okukozesa okuyita mu 2030. Sodium-ion eyinza okukwata ebitundu eby’omuwendo omutono-mu mu kukozesa okutambula nga density terina makulu kitono. Battery ezikulukuta ne tekinologiya omulala ow’ekiseera ekiwanvu-okukkakkana ng’asobola okukola ku byetaago by’essaawa 8+, naye okukendeeza ennyo ku nsaasaanya n’okulongoosa mu nkola y’emirimu bikyali byetaagisa. Haidrojeni afuuka ow’ebyenfuna mu kutereka mu sizoni yokka ng’obulungi obutono tebulina makulu matono okusinga ku mutendera omunene. Okuteebereza okusinga kulaga nti lithium-ion ekuuma akatale 70-80% okuyita mu 2030 wadde nga alternatives’ niche advantages.
Ebibuuzo Ebitera Okubuuzibwa
Enkola y’okutereka amaanyi ga bbaatule ey’ettunzi ewangaala ki?
Ebiteekebwa mu BESS eby’obusuubuzi bitera okutuuka ku myaka 10-15 egy’okukola okw’omugaso, wadde ng’abakola batera okulanga obulamu bw’emyaka 20+. Enkola ya ddala-ensi esinziira nnyo ku ngeri y’okuvuga obugaali, ebbugumu ly’okukola, n’obuziba bw’okufulumya. Enkola ezitambula emirundi ebiri buli lunaku mu bifo eby’ebbugumu ziyinza okwetaaga okwongeza obusobozi obw’amaanyi mu mwaka 8-10, ate enkola ezitambula oluusi n’oluusi mu mbeera ezifugibwa ebbugumu ziyinza okusukka emyaka 15 nga tezinnaba kuvunda nnyo. Enkola ezisinga ez’ensimbi za pulojekiti zitwala waakiri enzirukanya emu ey’okugaziya, nga zikyusa modulo za bbaatule ezivunze ate nga zisigaza inverter n’okuyungibwa kwa giridi okuzzaawo obusobozi obw’olubereberye.
Enkola z’okutereka bbaatule zikola zitya ssente mu butale bw’amasannyalaze?
Enyingiza ya BESS eva mu migga "egitumbidde" eziwera. Energy arbitrage-okugula amasannyalaze ag’ebbeeyi entono-mu ssaawa ezitali za ssente nnyingi n’okutunda mu biseera eby’emiwendo egy’amaanyi-kikuwa ensimbi ezisinga okulabika naye okweyongera okwolekagana n’okunyigirizibwa kw’omugatte nga bbaatule nnyingi zivuganya. Okusasula obusobozi okuva mu baddukanya emikutu gy’amasannyalaze kusasula okubeerawo mu kiseera ky’obwetaavu obw’oku ntikko, ne kiwa ensimbi ezitebenkedde ezikoleddwa mu ndagaano. Okulungamya emirundi n’empeereza ez’okuyambako zisasula okutebenkeza giridi ku mutendera gwa milisekondi-. Pulojekiti ezimu era zifuna satifikeeti z’amasannyalaze agazzibwawo oba endagaano ne kkampuni ezinoonya amasannyalaze agataliimu kaboni-. Okutegeera enkyukakyuka zino ez’ebyensimbi kitegeeza ekintu ekikulu ennyo mu kutegeera ebirungi n’ebibi mu nkola y’okutereka amaanyi ga bbaatule okuva mu ndowooza y’okusiga ensimbi. Pulojekiti ezituuse ku buwanguzi zitera okwetaaga emikutu 3-4 egy’enyingiza okusobola okutuuka ku magoba agagendererwa, kubanga okwesigamira ku nsibuko yonna emu kiraga nti kya bulabe okusinziira ku kukyukakyuka kw’akatale. Okutegeera enkyukakyuka zino ez’enyingiza kikola ekitundu ekikulu mu kwekenneenya ebirungi n’ebibi by’enkola y’okutereka amaanyi ga bbaatule okuva mu ndowooza y’ebyensimbi.
Enkola z’okutereka bbaatule tezirina bulabe eri ebitundu ebirimu abantu ababeera?
Ebifo eby’omulembe ebya BESS birimu layers ez’obukuumi eziwera omuli okulondoola ebbugumu, enkola eziziyiza omuliro, n’obusobozi bw’okuggalawo mu bwangu ebikendeeza ennyo ku bulabe. Lithium iron phosphate chemistry kati efuga utility-scale installations olw’obugumu obw’oku ntikko bw’ogeraageranya ne nickel-chemistry enkadde. Naye omuliro gwa Moss Landing gulaga nti enkola za bbaatule ennene-zireeta obulabe obw’amazima obwetaagisa ebikozesebwa mu kudduukirira mu mbeera ez’amangu. Enkola ezikoleddwa obulungi era ezikozesebwa zireeta akabi katono eri ebitundu ebiriraanyewo, naye okubeera okumpi n’ebifo eby’okubeeramu kulina okubeeramu amabanga agamala okudda emabega, okukuuma omuliro okunywevu, n’enteekateeka z’okuddamu mu mbeera ez’amangu. Ebiteekebwa okumpi n’amaka birina okukulembeza abakola ebintu abateereddwawo, abagatta abalina ebisaanyizo, n’enkola z’emirimu ezikuuma.
Biki ebisinga okusoomoozebwa mu by’ekikugu mu kutereka bbaatule mu kiseera kino?
Enzirukanya y’okuvunda ekwata ekifo ekisooka-okukuuma obusobozi obw’endagaano mu bulamu bwa pulojekiti obw’emyaka 15-20 kyetaagisa enzirukanya ya bbaatule ennungi, okwongera buli luvannyuma lwa kiseera, n’ebipimo by’emirimu ebikuuma ebikendeeza ku nfuna. Okukozesa okumala ebbanga eddene-kuleeta okusoomoozebwa okw’okubiri okunene, nga ebyenfuna bya lithium-ion byonooneka okusukka essaawa 6-8 naye ebirala bisigala nga tebikuze mu by’obusuubuzi. Obukuumi bw’omuliro bukyagenda mu maaso n’okukulaakulana, nga kyetaagisa bbalansi wakati w’okuteeka mu nkola mu ngeri ey’obukambwe n’ebiragiro by’obukuumi ebikakasibwa. Okugatta enkola y’okugaba ebintu mu China kireeta obulabe mu byobufuzi n’ebizibu ebiyinza okubaawo mu kubeerawo kaweefube w’okugaziya ebintu by’atajja kugonjoola okumala emyaka kkumi. N’ekisembayo, okusoomoozebwa kw’okugatta akatale kuvaayo ng’okuyingira kwa bbaatule kukula-okulya abantu emiwendo, okuliyirira okutamala ku muwendo gw’okwesigamizibwa, n’obukwakkulizo bwa koodi y’omukutu ogukoleddwa ku mulembe ogwa bulijjo okusinga okutereka okuddamu amangu byonna bizibu okutuuka ku kuddamu okukkirizibwa.
Okumaliriza: Okusalawo mu kutereka mu ngeri ey’amagezi mu katale akatali katuukiridde
Enkola z’okutereka amaanyi ga bbaatule zakyuka okuva ku kwegomba mu laboratory okudda ku grid-critical infrastructure mu myaka kkumi n’etaano gyokka. Okukendeeza ku nsaasaanya ya bitundu 40% buli mwaka, ebiseera by’okuddamu mu milisekondi, n’obusobozi obukakasibwa obw’okugatta amasannyalaze agazzibwawo bifuula BESS okuba ey’omugaso ennyo mu biruubirirwa by’okukendeeza ku kaboni ebyalabika ng’ebitasoboka emyaka kkumi egiyise.
Emisingi esatu girina okulungamya okusalawo ku kutereka bbaatule okugenda mu maaso. Okusooka, kwataganya ebbanga n'obwetaavu obwennyini-toteeka mu nkola nkola za ssaawa 4-ku nkola ezeetaaga ennaku z'okutereka, era tossa ssente nnyingi mu busobozi obusukka enkola z'okusindika entuufu. Ekyokubiri, okukulembeza obukuumi n’omutindo okusinga okukendeeza ku nsaasaanya-enkola esinga obuseere eyokya ekola amagoba amabi era etiisa erinnya ly’ekitongole kyonna. Ekyokusatu, okwawula ensibuko z’enyingiza n’okuzimba enkola ezikuuma-pulojekiti ezisinziira ku nkola z’enyingiza emu oba okuteebereza emiwendo okulina essuubi kijja kumalamu amaanyi.