Enkola z’okutereka bbaatule zitereka amaanyi g’amasannyalaze okukozesebwa oluvannyuma, ne ziziba ekituli wakati wa ddi amaanyi lwe gakolebwa ne ddi lwe geetaagibwa. Enkola zino zifuuse ebikozesebwa ebikulu kubanga ensibuko z’amasannyalaze agazzibwawo ng’amasannyalaze g’enjuba n’empewo kati zikola ebitundu ebisukka mu 40% ku masannyalaze agakolebwa mu nsi yonna, ekireeta obutakwatagana wakati w’okufulumya n’obwetaavu.
Ensonga Y'ebyenfuna Ekyuse Mu Musingi
Ensonga y’ebyensimbi ku kutereka bbaatule ekyuse mu myaka kkumi egiyise. Ebisale by’enkola byakka nnyo okuva ku doola 2,571 buli kilowatt-essaawa mu 2010 okutuuka ku doola 165/kWh mu 2024-okukendeera kwa 93%. Mu China, ebisale bimenye ekiziyiza kya doola 100/kWh, ng’enkola z’essaawa 4-zikola wakati wa doola 85/kWh. Okukendeera kuno okw’amaanyi mu bbeeyi tekwabadde kwa mpolampola; Omwaka 2024 gwokka gwakendeera ebitundu 40% okusinziira ku mwaka, nga kino kwe kukendeera okusinga obunene okuva okulondoola okujjuvu lwe kwatandika mu 2017.
Enkola eno ey’omuwendo ekyusizza ebyenfuna. Okutereka bbaatule kati kuvuganya butereevu n’amakolero agakola ggaasi ow’obutonde okumala ebbanga erituuka ku ssaawa nnya. Okwekenenya okwakakolebwa mu Girimaani kwazuula nti amasannyalaze g’enjuba ag’omugaso-aggatta n’okutereka bbaatule gagula ssente ntono okuzimba n’okukola okusinga obusobozi obwenkanankana obwa ggaasi-okukozesebwa. California eraga enkyukakyuka eno mu ngeri entuufu-bbaatule bulijjo zituukiriza kumpi ebitundu 20% ku bwetaavu obw’oku ntikko akawungeezi, ne zisengula okufulumya ggaasi okwandibadde okwetaagisa emyaka esatu gyokka egiyise.
Obusobozi bw’enyingiza busukka ku nkola y’amasoboza ennyangu. Abaddukanya bbaatule ku mutindo gwa grid- bafuna ssente okuva mu migga mingi: okulungamya frequency, obutale bw’obusobozi, pulogulaamu z’okuddamu obwetaavu, okulwawo okutambuza, n’okusuubula amaanyi mu bungi. Enkola erongooseddwa obulungi-mu Texas esobola okutambula buli lunaku, ng’esasula ng’emiwendo gya ‘wholesale’ gikka wansi wa doola 20/MWh ate n’efulumya mu biseera eby’oku ntikko ng’emiwendo girinnya waggulu wa doola 100/MWh. Ebifo ebimu biwandiise emiwendo gy’okufulumya amazzi egisukka mu doola 5,000/MWh mu biseera eby’amangu ku ggirita.
Abakozesa eby’obusuubuzi n’amakolero balaba ebivuga eby’omuwendo eby’enjawulo. Ebisale by’obwetaavu obw’oku ntikko bitera okukiikirira ebitundu 30-50% ku ssente z’amasannyalaze ku bifo ebinene. Enkola ya bbaatule eriko sayizi entuufu esobola okusenya entikko zino, okuvaamu ebiseera by’okusasula eby’emyaka 3-5 ne bwe kiba nga tekinnafaayo ku muwendo gw’amaanyi ag’okutereka oba okwetaba mu pulogulaamu z’okuddamu obwetaavu. Omusolo gwa gavumenti eya wakati ogwa 30% oguweebwayo okutuuka mu mwaka gwa 2032 gwongera okwanguya amagoba.
Okutebenkera kwa Grid Kyetaaga Ebikozesebwa Ebiddamu Amangu-
Emikutu gy’amasannyalaze gikola mu bbandi za frequency enfunda-mu ngeri entuufu 60 Hz mu North America, nga zirina okukyama okukkirizibwa okwa ±0.05 Hz zokka mu mbeera eza bulijjo. Ebifo eby’ennono ebikola amafuta g’ebintu ebikadde bikuuma emirundi nga biyita mu masa agakyukakyuka ne bagavana ebiddamu embeera z’omukutu. Nga amakolero gano gawummula, abaddukanya emikutu gya yintaneeti boolekedde ekyeya ky’obutakola.
Enkola z’okutereka bbaatule ziddamu mangu nnyo okusinga eky’obugagga ekirala kyonna ekya giridi. Zikyuka okuva ku standby okudda ku full discharge mu wansi wa sikonda emu, bw’ogeraageranya n’eddakiika 10-15 ku ttabiini ya ggaasi. Sipiidi eno nsonga mu biseera by’ebintu ebiyinza okugwawo. Jenereta ennene bw’egwa ku mutimbagano, frequency etandika okukka amangu ddala. Singa egwa wala nnyo, otomatiki load shedding etandika-rolling blackouts ezikutula bakasitoma okutangira grid okugwa ddala.
Obunene bw’okusoomoozebwa kuno bunene nnyo. Texas yafuna okuyita 11 ez’okukuuma mu 2023, embeera ng’okugabira abantu tekutuukana na bwetaavu butono. Mu biseera bino, okutereka bbaatule kwawa obusobozi okutangira okuvaako. Mu February 2024, enkola z’okutereka ebintu mu Texas zalaga kumpi 1 GW ramp mu kufulumya amazzi mu bwangu, ne zitebenkeza omukutu mu biseera by’obudde obw’amaanyi.
Grid ya California nayo eyogera emboozi efaananako bwetyo. State’s 12.5 GW of installed battery capacity kati egaba empeereza ezaali zeetaaga okulabirira spinning reserves-amabibiro ga ggaasi agakola wansi w’obusobozi, nga geetegefu okulinnyisibwa. Okutereka bbaatule kukendeeza ku butakola bulungi buno ate nga kiwa frequency response ey’ekika ekya waggulu.
Obusobozi obw’ekikugu busukka ku kukola mu mbeera ez’amangu. Enkola za bbaatule ez'omulembe ziwa tekinologiya wa "grid-forming" inverter, awagira nnyo vvulovumenti ne frequency okusinga okugoberera grid mu ngeri ey'obutakola. Obusobozi buno bufuuka bukulu nnyo nga eby’obugagga ebisinziira ku inverter- (enjuba, empewo, ne bbaatule) bikola emigabo eminene egy’obusobozi bw’okukola. Battery ezikola giridi-zisobola n'okuddamu okutandika ebitundu bya giridi oluvannyuma lw'okuzikira-empeereza eyitibwa "black start" mu buwangwa eyali yeetaaga jenereta z'amasannyalaze ag'amazzi oba dizero.
Okugatta Amasannyalaze Okuzzibwawo Kyetaaga Obudde bw'Amasoboza-Okukyusa
Enkola y’okuzaala enjuba n’empewo tetera kukwatagana na nkozesa. Amasannyalaze g’enjuba gafulumya ebifulumizibwa ku ntikko mu ttuntu ng’obwetaavu bw’ebyobusuubuzi bungi naye ng’obwetaavu bw’amayumba bwa kigero. Ebikolebwa bikendeera okutuuka ku ziro ng’enjuba egudde, nga n’enkozesa y’amayumba bwe yeeyongera okufumba, okufumbisa n’okukola emirimu egy’akawungeezi. Enkola z’empewo zaawukana okusinziira ku kifo naye zitera okutuuka ku ntikko mu kiro kimu ng’obwetaavu businga wansi.
Awatali kutereka, obutakwatagana buno buleeta ebizibu bibiri: okukendeeza n’okulinnyisa ebyuma. Abaddukanya emikutu gy’amasannyalaze bakendeeza (okusaasaanya) amaanyi agazzibwawo nga okufulumya kusukka obwetaavu nga kwogasse n’obusobozi bw’okutunda ebweru w’eggwanga. California yakendeeza ku megawatt obukadde 2.7-essaawa z’amasannyalaze g’enjuba-scale solar mu 2023-ezimala okukola amasannyalaze mu maka nga 400,000 okumala omwaka mulamba. Okukendeeza kuno kubaawo wadde nga gavumenti eyingiza amasannyalaze okuva mu bitundu ebiriraanyewo mu biseera by’oku ntikko akawungeezi.
Ekintu kya "duck curve" kiraga okusoomoozebwa kwa ramping. Nga okufulumya amasannyalaze g’enjuba kukendeera mu budde obw’emisana, abaddukanya emikutu gy’amasannyalaze balina okwongera amangu ku nsonda endala ez’amasannyalaze okusobola okutuukiriza obwetaavu obweyongera obw’akawungeezi. Kino kireeta ekkubo eriwanvu eryetaaga eby’obugagga ebikyukakyuka. Ebifo ebikola ku ntikko za ggaasi mu buwangwa byajjuza ekifo kino, naye bya bbeeyi okubikola era bizibu ku butonde bw’ensi.
Okutereka bbaatule kigonjoola ensonga zombi omulundi gumu. Enkola zisasula mu kiseera ky’entikko z’enjuba mu makkati-day, ekikendeeza ku kukendeeza ate nga ziwa enyingiza eri abaddukanya enjuba. Zifulumya mu biseera by’entikko ez’akawungeezi, ne zikendeeza ku byetaago by’okutambulira mu bifo eby’enjawulo (ramping requirements) n’okusenguka okutondebwa kw’ebintu eby’edda. Ekibinja kya bbaatule mu California kiraga enkola eno buli lunaku-omugugu ogw’oku ntikko ogw’akawungeezi ogutuukirizibwa bbaatule kumpi gwakubisaamu emirundi ebiri okuva mu 2023 okutuuka mu 2024, ne gutuuka ku bitundu 20% mu mbeera eza bulijjo.
Ebbanga ly’okutereka eryetaagisa lyawukana okusinziira ku kukozesebwa n’okutabula ebyuma ebizzibwa obuggya. Enkola za utility-scale systems mu 2024 zaamala essaawa 2.4, nga zino zaali 33% okuva ku ssaawa 1.8 mu 2020. Enkyukakyuka eno okudda ku bbanga eddene eraga obwetaavu obweyongera okuziba ebituli ebinene wakati w’omulembe n’obwetaavu. Pulojekiti ezigatta okutereka amasannyalaze g’enjuba n’essaawa 4 zisobola okuwa obusobozi obusindikibwa nga bukoppa amabibiro g’amasannyalaze aga bulijjo, nga galina ebisaanyizo by’okusasula obusobozi okutumbula ebyenfuna bya pulojekiti.
Enkola z’ebifo ziraga enkolagana wakati w’okuyingira kw’amasannyalaze agazzibwawo n’okuteekebwa mu nkola mu kutereka. Texas yayongerako GW 4 eza bbaatule mu 2024, kumpi nga zikwatagana n’ebyo California bye yayongeddeko wadde nga California etandise emyaka kkumi-. Obusobozi bw’empewo n’enjuba mu Texas bwakula ne busukka GW 50, ekyaleetawo okusoomoozebwa kwe kumu mu kugatta California kwe yayolekagana nakwo emyaka egiyise. Ensengeka y’akatale ka gavumenti eyaggyibwako amateeka yakkiriza okuteeka mu nkola amangu okutereka-bbaatule zaafuna ssente okuva mu kukyusakyusa amaanyi nga tekyetaagisa buyinza oba ndagaano za bbanga ddene-.
Okwesigamizibwa n’okugumira embeera bifuuse bikulu nnyo
Amasannyalaze okuvaako gafiiriza ebyenfuna bya Amerika wakati w’obuwumbi bwa ddoola 25-70 buli mwaka, okusinziira ku kuteebereza kw’ekitongole ky’amasannyalaze. Emirundi n’obudde bw’okuggwaako kw’amasannyalaze byeyongedde mu myaka kkumi egiyise. Ebintu ebisukkiridde eby’obudde-embuyaga, omuliro gw’ensiko, omuyaga gwa ice-bireeta okuziba kw’amasannyalaze okumala ennaku eziwera nga bikosa obukadde n’obukadde bw’abantu. Ne bwe wabaawo okutaataaganyizibwa okumala akaseera katono kutaataaganya ebifo ebitereka amawulire, amalwaliro, ebifo ebikola ebintu, n’ebikozesebwa ebikulu.
Okutereka bbaatule kuwa obugumu ku minzaani eziwera. Ku bifo ssekinnoomu, enkola ezirina sayizi ya ssaawa 4-8 zisobola okuziba okutaataaganyizibwa okusinga ku mudumu nga bwe balinda jenereta ez’okutereka okutandika oba amasannyalaze ga mudumu okuddamu. Obutafaananako jenereta, bbaatule zikyuka mu kaseera ako nga tewali kutaataaganyizibwa ku byuma bikalimagezi ebikulu. Tezeetaaga kutuusa mafuta, okumalawo obuzibu mu nkola y’okugabira abantu mu biseera by’obutyabaga.
Omuwendo gubala mu ngeri ya njawulo mu bitundu byonna. Ebifo ebitereka amawulire bigera omuwendo gw’ensimbi ezisaasaanyizibwa mu kiseera ky’okuyimirira mu nkumi n’enkumi za ddoola buli ddakiika. Okuvaako omulundi gumu kuyinza okuleeta ebibonerezo by’endagaano y’omutendera gw’empeereza, okwonooneka erinnya, n’okuwuuma kwa bakasitoma. Enkola za bbaatule ezirina sayizi y’emigugu emikulu (serva, cooling, networking) nga kwogasse n’obudde bw’okukyusa okudda ku jenereta zikiikirira yinsuwa ku kufiirwa okw’akatyabaga.
Ebifo by‟ebyobulamu byolekedde ebyetaago by‟obukuumi mu bulamu-. Amalwaliro gakuuma jenereta ezitereka naye geesigamye ku nkola za UPS okuziba ekituli kya sikonda 10-30 nga jenereta tennatuuka ku sipiidi y’okukola. Ebipya ebiteekebwa mu kifo kya UPS eza bulijjo n’enkola ennene ez’okutereka bbaatule eziwa obudde obw’okudduka obw’ekiseera ekiwanvu ate nga nazo zeetaba mu pulogulaamu z’okuddamu obwetaavu mu biseera by’emirimu egya bulijjo-okuleeta ensimbi okuva mu by’obugagga ebyatuula mu buwangwa nga tebikola.
Emirimu gy’amakolero gibala ssente ezisaasaanyizibwa ku kuggwaako nga giyita mu kukola ebintu ebifiiriddwa, ebintu ebisaziddwamu, n’okwonooneka kw’ebyuma. Ekyuma ekisaanuusa aluminiyamu tekisobola kuyimiriza na kuddamu kutandika mirimu mangu-ekyuma kikaluba, nga kyetaagisa okuyonja ennyo. Ekifo ekikola semikondokita kiyinza okusaanyawo obukadde bwa ddoola za wafers-mu-process okuva mu nkyukakyuka y’amaanyi mu bufunze. Ku nkola zino, okutereka bbaatule kiweesa obutuufu bw’okuteeka ssente nga bayita mu kufiirwa okwewalibwa okusinga okukekkereza amaanyi.
Community-scale resilience ekiikirira enkola egenda okuvaayo. Microgrids ezigatta amasannyalaze g’enjuba ag’omu kitundu, okutereka bbaatule, n’emigugu emikulu zisobola okusimbula okuva ku mudumu omukulu mu biseera by’okuvaako. Ebitundu by’e California ebiwerako byassa enkola zino oluvannyuma lw’okuzikira kw’amasannyalaze agakwata ku muliro gw’ensiko-enfunda eziwera. Mu biseera by’emirimu egya bulijjo, microgrid ekola ku by’amasannyalaze era ekendeeza ku nsaasaanya y’amasannyalaze. Mu biseera eby’amangu, ekuuma amasannyalaze eri ebifo by’abantu, ebifo ebizikiriza omuliro, ebifo eby’obujjanjabi, n’ebifo ebipampagira amazzi.
Ensengeka y’akatale n’okuwagira enkola bivuga okwettanira
Embeera y’okulungamya ekulaakulana okutegeera okutereka bbaatule ng’ekibiina ky’eby’obugagga eky’enjawulo. Nga omwaka 2020 tannatuuka, obuyinza obusinga bwatwala okutereka ng’okuzaala oba okutambuza, ekyaleetawo obutali bukakafu mu kugabanya ekyalemesa okusiga ensimbi. Ekiragiro kya Federal Energy Regulatory Commission Order 841 kyali kyetaagisa obutale obutegekeddwa obwa ‘wholesale’ okukkiriza okwetaba mu kutereka mu butale bwonna obukola. Kino kyaggulawo emikisa gy’enyingiza mu kulungamya emirundi, okutereka emirimu, n’obutale bw’obusobozi.
Etteeka erikendeeza ku bbeeyi y’ebintu mu 2022 lyakyusa nnyo ebyenfuna bya pulojekiti nga lyayongereza ku musolo gw’okusiga ensimbi ebitundu 30% okutuuka ku nkola z’okutereka ebintu ezeetongodde. Emabegako, bbaatule zaali zirina ebisaanyizo by’okukendeeza ku musolo nga zisangibwa wamu ne pulojekiti z’amasannyalaze g’enjuba. Enkyukakyuka eno yaleetawo okussa ssente mu bifo eby’enkizo nga kyetaagisa okutereka naye ng’amasannyalaze g’enjuba tegaali malungi-ebifo ebitono eby’omu bibuga, ebifo ebiyungibwa empewo ku nnyanja, n’ebitundu ebizibu okutambuza.
Enkola z'omutendera gwa gavumenti-zaawukana nnyo mu kuwagira kwazo. California yalagira nti amakampuni agakozesa amasannyalaze gagula ebiruubirirwa ebitongole eby’obusobozi bw’okutereka, okutondawo akatale akakakafu akaaggya-akabi mu nkulaakulana ya pulojekiti. New York yabalirira nti GW 4 ku ssaawa munaana-okutereka ziyinza okusaasaanya-okutuukiriza obulungi ebyetaago by’enkola mu mwaka gwa 2035, okusinga mu kitundu ky’ekibuga New York ebimera eby’ebintu eby’edda gye biwummudde. Enkola zino ez’okugula ebintu ziwa obukakafu ku nfuna ekisobozesa okusasula pulojekiti.
Ebikwata ku nteekateeka y’akatale bikulu nnyo eri ebyenfuna bya pulojekiti. Texas's energy-empeera z'akatale kwokka ez'ebbula emiwendo-emiwendo giyinza okulinnya okutuuka ku $5,000/MWh ng'okugabibwa kutono. Kino kireeta emikisa gya arbitrage egitabeerawo mu butale obulina price caps. Enteekateeka ya California eya Resource Adequacy egaba okusasula obusobozi ku by’obugagga ebyesigika, ate akatale k’obusobozi ka PJM kawa endagaano z’emyaka mingi-ez’omu maaso. Abakola emirimu balina okutegeera amateeka g’akatale k’ekitundu okusobola okulongoosa enkola y’okugerageranya obunene bw’enkola n’obukodyo bw’okutunda.
Ebiseera by’okuyungagana bikiikirira ekiziyiza eky’omugaso ku sipiidi y’okuteeka mu nkola. Ebitundu bya Amerika ebisinga byolekedde ennyiriri z’okuyungagana ez’emyaka 2-4 ku pulojekiti empya. Okutereka bbaatule kulina enkizo wano-ebiseera ebimpi eby’okuzimba (emyezi 6-12) okusinziira ku njuba (emyezi 12-18) oba empewo (emyezi 18-24) kitegeeza nti oluvannyuma lw’okuyungibwa okukkirizibwa, pulojekiti zijja ku mutimbagano mangu. Abamu ku bakola bagoberera okutereka okwetongodde ku bifo ebirina eddembe ly’okuyunga eriwo, nga beewala ddala okulwawo ennyiriri.
Enkulaakulana Ya Tekinologiya Egenda Mu Maaso
Battery za lithium-ion ze zisinga okuteekebwa mu nkola mu kiseera kino, nga ziwamba ebitundu 85% ku katale ka grid-ion mu 2024. Munda mu lithium-ion, okwettanira kemiko kukyuse nnyo. Lithium iron phosphate (LFP) yalinnya okuva ku 48% akatale mu 2021 okutuuka ku 85% mu 2024. Enkyukakyuka eno eraga ebirungi bya LFP: ssente entono, obulamu bw’enzirukanya obuwanvu (5,000-10,000 cycles okusinziira ku 3,000-5,000 ku nickel-based chemistries), n’okutebenkera kw’ebbugumu okusukkulumye.
Okulongoosa mu by’okwerinda kuwerekera enkyukakyuka mu kemiko. Obutoffaali bwa LFP tebutera kudduka mu bbugumu-okulemererwa kw’ebbugumu erya cascading ekivaako omuliro gwa bbaatule. Emiwendo gy’ebintu ebigwa mu makolero gikendedde wadde nga waliwo okukula okw’amaanyi mu busobozi obuyisibwa. Omuwendo gw’okulemererwa mu 2024 gwakka ne gutuuka ku bintu 0.03 buli GW eyassibwawo, nga kino kye kisinga wansi okuva okulondoola lwe kwatandika mu 2016. Pulojekiti ennene zimalirizza okugezesa obukuumi bw’omuliro (UL9540A) okussa obutoffaali mu mbeera ezisukkiridde ezitegekeddwa okuleetawo ebikolwa eby’ebbugumu. Obutoffaali bw’empewo obwa Form Energy obw’ekyuma-tebwakwata omuliro ne mu mbeera eyandireese omuliro gwa lithium-ion.
Okusukka lithium-ion, tekinologiya omulala atunuulira enkola ezenjawulo. Battery ezikulukuta zikozesa amasannyalaze ag’amazzi agapambiddwa okuyita mu riyakita, nga gakutula amaanyi n’ebipimo by’amasoboza. Kino kizifuula ezisikiriza eri enkola z’okutereka okumala ebbanga eddene-ezikoleddwa okumala essaawa 8-100 ez’okufulumya. Battery ya vanadium redox flow eya 175 MW / 700 MWh yatandika okukola mu 2024. Battery z’empewo ez’ekyuma zisuubiza n’okukendeeza ku ssente entono mu kutereka mu sizoni, nga Form Energy’s West Virginia factory scaling production.
Okulongoosa mu nkola y’emirimu kukyagenda mu maaso okusukka okukendeeza ku nsaasaanya. Enkola z’okuddukanya bbaatule ez’omulembe zikozesa okuyiga kw’ebyuma okulongoosa enkola z’okucaajinga/okufulumya amazzi nga zeesigamiziddwa ku kuteebereza embeera y’obudde, okuteebereza ebbeeyi y’amasannyalaze, n’engeri y’okuvunda. Enzirukanya y’ebbugumu ey’omulembe eyongera ku bulamu bw’enzirukanya nga ekuuma ebbugumu erisinga obulungi ery’okukola. Enkola za DC-coupled zikendeeza ku kufiirwa kw’okukyusa nga ziyunga bbaatule butereevu ku nsengekera z’enjuba ku vvulovumenti ya DC, ne zimalawo omutendera gumu ogwa inverter.
Okugatta enkola kulongooseddwa nnyo. Okuteeka bbaatule mu kusooka kwali kwetaagisa yinginiya ow’enjawulo ku buli kifo. Ebigonjoola ebizibu ebiri mu konteyina kati bisindika ebitereke bya bbaatule nga tebinnaba kugatta era nga bigezesebwa-, ebyuma by’amasannyalaze, okuddukanya ebbugumu, okuziyiza omuliro, n’enkola z’okufuga byonna nga biterekeddwa mu konteyina z’okusindika eza bulijjo. Modularity eno eyanguya okuteekebwa mu nkola ate nga ekendeeza ku nsaasaanya. Konteyina eziwera zikwatagana okutuuka ku busobozi bw’okupima, nga ebifo biva ku konteyina emu (1-3 MWh) okutuuka ku bifo ebinene nga Moss Landing (750 MW / 3,000 MWh).
Enkola z’obukuumi zifuuse za mulembe. Ebiteekebwawo eby’omulembe mulimu layers eziwera: cell-level fusing, module-level contactor isolation, rack-level circuit breakers, n’okukutula okw’amangu ku ddaala lya konteyina-. Ebilondoola ebizuula ggaasi ku haidrojeni n’ebintu ebikolebwa mu kwokya. Kkamera ezikozesa ebbugumu zisika modulo za bbaatule obutasalako. Enkola z’okuziyiza omuliro eza aerosol zikola nga thermal runaway tennasaasaana wakati wa modulo. Enkola zino zikola ku kweraliikirira kw’amakolero n’abantu b’omukitundu ku muliro gwa bbaatule.
Ekipimo ky’okuteekebwa mu nkola Kiraga Omuwendo ogukakasibwa
Obusobozi bw’okutereka bbaatule mu Amerika bwasukka GW 26 ku nkomerero ya 2024, nga GW endala 19.6 zitegekeddwa mu 2025. Kino kitegeeza okukula kwa bitundu 66% mu mwaka gumu. Payipu ya GW 143 okukuŋŋaanyizibwa okutuuka mu 2030 eraga nti egenda mu maaso n’okugaziwa okw’amangu. Zino si nnamba za kuteebereza-abakola balina endagaano z'okuyunga, okufuga omukutu, n'obweyamo bw'ensimbi ku pulojekiti ez'ekiseera ekitono-.
Omusingi ogussiddwawo guseeyeeya okutuuka ku kuteekebwa mu nkola gye buvuddeko. Ebitundu nga 70% ku busobozi bwa Amerika obuliwo kati bwajja ku mutimbagano mu myaka ebiri egiyise. Kino kitegeeza nti enkola ezisinga zikyali mu bulamu obusookerwako, tezibadde na nsonga nnene, era zikakasa endowooza z’emirimu. Omuwendo gw’okuwangaala ku pulojekiti ezitandikiddwa gusukka 98%-enkola ntono nnyo eziremye oba eziggiddwawo.
Enkula za pulojekiti zeeyongedde nnyo. Mu mwaka gwa 2020, pulojekiti ya Amerika eyasinga obunene yali ya MW 40. Mu mwaka gwa 2024, pulojekiti eziwera zasukka MW 300. Ekifo kya Gemini Solar Plus Storage mu Nevada kigatta amasannyalaze g’enjuba aga MW 690 n’okutereka amasannyalaze ga MW 380 / MWh 1,416 wansi w’endagaano y’okugula amasannyalaze ey’emyaka 25. Ku mutendera guno, okutereka bbaatule kulina ebisaanyizo ng'obusobozi bwa "baseload" abaddukanya emikutu gye basobola okwesigamako okukola emirimu gya buli lunaku.
Okukuŋŋaanyizibwa kw’ebitundu kulaga obuwagizi bw’enkola n’embeera y’akatale. California ekyaza 12.5 GW, Texas 8 GW-amasaza gano gombi gakola ebitundu 78% ku busobozi bwa Amerika. Naye okuteekebwa mu nkola kweyongera okugaziwa. Florida, Arizona, Nevada, ne New York zirina payipu nnyingi. Ne mu bitundu ebyesigama ku amanda mu buwangwa-bikulaakulanya okutereka-Indiana, Kentucky, ne West Virginia zirina pulojekiti mu mitendera egy’enjawulo.
Enkola z’okuteeka mu nkola mu nsi yonna zaawukana okusinziira ku bitundu. Bulaaya yayongerako GWh 21 mu 2024, n’etuuka ku GWh 61 ezaateekebwawo, nga Girimaani ne Yitale buli emu yawaayo GWh nga 6. China y’efuga ennamba entuufu, ng’eteeka obusobozi obwenkana n’ensi yonna ng’ogasseeko. Asia Pacific yakola ebitundu 46.6% ku katale k’ensi yonna aka grid-scale mu 2024. Ekitongole ky’amasannyalaze mu Japan kikuze obusobozi bw’amasannyalaze agazzibwawo ebitundu ebisukka mu 30% mu myaka etaano, ekivuddeko okweyongera okw’amaanyi mu bwetaavu bw’okutereka.
Ebitundu by’amayumba n’ebyobusuubuzi biraga engeri ez’enjawulo ez’okuzaala abaana. Ebifo ebitereka amasannyalaze mu Amerika bisigala nga bitono nnyo bw’ogeraageranya n’ebikozesebwa-naye bikula mangu mu masaza agalina ssente nnyingi ez’amasannyalaze, ebiseera-eby’okukozesa{5}}emiwendo, oba okuvaako emirundi mingi. Enkola zitera okuva ku kWh 5-15, nga zigatta n’amasannyalaze g’enjuba ku kasolya okusobola okwekozesa ennyo n’okuwa amaanyi ag’okukuuma. Ebifo eby’obusuubuzi (30 kWh - 2,000 kWh) essira balitadde ku kukendeeza ku musolo gw’obwetaavu n’okwesigamizibwa, ng’ebifo ebimu byetaba mu nteekateeka z’okuddamu obwetaavu okusobola okufuna ssente endala.
Ebikozesebwa mu by’ensimbi Bikakasiddwa nti Bisobola
Omuwendo ogugereddwa ogw’okutereka amaanyi-omuwendo omutono ogwetaagisa okumenya mu bulamu bw’enkola-gufuuse ogw’okuvuganya n’eby’obugagga ebya bulijjo. Utility-scale storage LCOE yagwa okutuuka ku $104/MWh mu 2024, nga kino kyakendeera ebitundu 33% okuva mu 2023. Okuteebereza kulaga nti LCOE egenda kutuuka ku $53/MWh omwaka 2035 we gunaatuukira, kumpi kitundu ku nsaasaanya eriwo kati. Ku mitendera gino, okutereka kuvuganya mu by’enfuna n’amabibiro agakola ku ntikko za ggaasi ne bwe kiba nga tekirowoozezza ku nsaasaanya ya kaboni oba emigaso gy’okugatta amasannyalaze agazzibwawo.
Ensimbi za pulojekiti zikuze nnyo. Bbanka ennene ne bamusigansimbi ab’ebitongole kati bategeera akabi akali mu kutereka bbaatule n’amagoba, nga bawa ensimbi z’amabanja ku bukwakkulizo obutuufu. Kino kitegeeza enkyukakyuka ennene okuva mu 2018-2020 nga pulojekiti ezisinga zeetaaga ensimbi ez’ebbeeyi ez’emigabo oba balansi z’abakulaakulanya. Ensimbi eziteekeddwa mu kutereka bbaatule zasukka obuwumbi bwa ddoola butaano mu 2022, kumpi emirundi esatu omwaka oguwedde.
Ekikulu mu kugaba ensimbi kwe kuteebereza enyingiza. Pulojekiti ezirina endagaano ez’ekiseera ekiwanvu-okusasula obusobozi, ebbanja ly’amasannyalaze agazzibwawo, endagaano z’okugula amasannyalaze-zisobola okukuuma ebbanja ly’ensimbi za pulojekiti ku magoba ga 5-7%. Pulojekiti z’abasuubuzi abeesigama ku kwetaba mu katale ka ‘wholesale’ zisanga ebizibu eby’amaanyi naye zisobola okuwandiika nga zeesigamiziddwa ku mbeera z’emiwendo ezikuuma. Emyaka egiwerako egy’ebiwandiiko ebikwata ku mirimu giwadde abawola ssente obwesige mu nkola y’enkola n’emiwendo gy’okusereba.
Ku bakozesa eby’obusuubuzi n’amakolero, ekiteeso ky’omuwendo kisukka ku nsaasaanya y’amasannyalaze. Ebifo bingi bikola wansi w’emisolo egitaataaganyizibwa nga giwa emiwendo egya wansi mu kuwaanyisiganya okukkiriza okukendeeza ku mpeereza okuyinza okubaawo. Okutereka bbaatule kibasobozesa okukwata ssente zino ezikekkereza ate nga bakuuma obwesigwa nga bayita mu maanyi agaterekeddwa mu biseera by’okukendeeza. Okugatta kuno kusobola okukendeeza ku nsaasaanya y’amasannyalaze ebitundu 20-30% ate nga kitumbula omutindo gw’amasannyalaze.
Ebyenfuna by’amayumba byesigamye nnyo ku miwendo gy’ebikozesebwa mu kitundu n’ebisikiriza. Mu butale obulina enjawulo mu miwendo gy’okukozesa mu biseera-eby’okukozesa (off-emigerageranyo gy’emiwendo egy’oku ntikko okutuuka ku ntikko egisukka 3:1), enkola z’okutereka ezigatta n’amasannyalaze g’enjuba zisobola okutuuka ku biseera eby’okusasula wansi w’emyaka musanvu. Ebbanja ly’omusolo erya federo erya 30% lyanguya nnyo okuddamu-enkola ya $15,000 efuna $4,500 mu credits. Ebitongole ebimu eby’amasannyalaze biwa ssente endala eziddizibwa oba okusikiriza emirimu ekyongera okutumbula ebyenfuna.
Ebibuuzo Ebitera Okubuuzibwa
Enkola z’okutereka bbaatule ziwangaala bbanga ki?
Enkola za lithium-ion ez’omulembe zikakasibwa okumala emyaka 10-15 era mu ngeri entuufu zisigaza ebitundu 80% ku busobozi obw’olubereberye oluvannyuma lw’enzirukanya y’okucaajinga 5,000-10,000. Obulamu bwennyini businziira ku kemiko (LFP ewangaala okusinga NMC), ebbugumu ly’okukola, n’obuziba bwa bbaatule bw’efulumya buli cycle. Enkola za grid-scale zikozesa software y’okuddukanya bbaatule ekola obulungi okusobola okuwangaala-oluusi okukendeeza ku nfuna okusobola okwongera ku bulamu obw’omugaso. Enkola z’amayumba ezivuga obugaali buli lunaku zitera okwetaaga okukyusibwa oluvannyuma lw’emyaka 10-12, wadde nga inverter n’ebyuma biyinza okwetaaga okukolebwako nga tegunnatuuka.
Kiki ekituuka ku bbaatule ku nkomerero-obulamu bwa-?
Okuddamu okukola bbaatule kifuuse omulimu ogugenda gweyongera, nga guzzaawo lithium, cobalt, nickel, n’ebintu ebirala eby’omuwendo. Enkola z’okuddamu okukola mu kiseera kino zizzaawo ebitundu 90-95% ku bintu bya bbaatule. Naye, ebikozesebwa mu kuddamu okukola ebintu tebinnaba kukula mu bujjuvu kubanga bbaatule ezisinga obungi eza lithium-ion ezassibwa mu myaka kkumi egiyise zisigala nga zikola. Amakolero gasuubira okweyongera mu bbaatule eziriwo ku nkomerero-ez’obulamu oluvannyuma lwa 2030 ng’enkola z’okutereka EV ne grid nga bukyali ziwummudde. Battery ezimu ezitakyatuukana na bisaanyizo bya mutindo gwa giridi zisobola okuddamu okukozesebwa mu mirimu egitayagala nnyo nga tezinnaba kuddamu kukozesebwa mu ngeri esembayo.
Enkola z’okutereka bbaatule tezirina bulabe bwonna okuziteeka okumpi n’amaka oba bizinensi?
Enkola za bbaatule ez’omulembe zirimu layers eziwera ez’obukuumi ezikendeezezza ennyo ku bulabe bw’omuliro. Okukyuka okudda mu kemiko wa LFP kibadde kikulu nnyo-obutoffaali buno mu butonde bunywevu okusinga enkola endala ezesigamiziddwa ku nikele-. Enkola ezikoleddwa obulungi mulimu okuddukanya ebbugumu, okuzuula ggaasi, okuziyiza omuliro, n’obusobozi bw’okukutula emikutu egy’amangu. Omuwendo gw’ebintu ebibaddewo gukendedde okutuuka ku 0.03 events buli GW of installed capacity, era okulemererwa okusinga kuzingiramu control electronics okusinga battery cells zennyini. Ebitongole ebizikiriza omuliro mu kitundu bitera okwetegereza enteekateeka z’obukuumi ku bifo ebinene era ne byetaba mu kutendekebwa mu kudduukirira mu mbeera ez’amangu.
Okutereka bbaatule kusobola okukola mu bbugumu erisukkiridde?
Omulimu gwa bbaatule gwawukana okusinziira ku bbugumu, naye enkola ez’omulembe zirimu okuddukanya ebbugumu mu ngeri ey’amaanyi okusobola okukuuma ebanga ly’ekola obulungi. Enkola za lithium-ion ezisinga zikola mu mbeera z’obutonde -20℃okutuuka ku +45 degree, nga zikozesa okubugumya n’okunyogoza nga bwe kyetaagisa. Embeera ennyogovu ennyo yeetaaga ebintu ebiziyiza omuliro n’okubugumya. Embeera ez’ebbugumu ennyo zeetaaga obusobozi obw’amaanyi obw’okunyogoza. Enkola zino ez’okuddukanya ebbugumu zikozesa amaanyi, ekikendeeza ku bulungibwansi bw’enkola mu mbeera ezisukkiridde. Ebifo ebimu bikozesa okutereka amaanyi g’ebbugumu (okutereka ebbugumu/okunyogoza) ku mabbali ga bbaatule z’amasannyalaze okukendeeza ku kukosebwa kuno.
Battery zirina ebisaanyizo by’okufuna ebisikiriza bye bimu n’ebyuma ebikozesa amasannyalaze g’enjuba?
Etteeka erikendeeza ku bbeeyi y’ebintu lyayongera ku musolo gwa gavumenti eya wakati ogwa 30% ku nkola z’okutereka bbaatule ezeetongodde, enkyukakyuka ennene mu nkola okuva ku mateeka agaaliwo emabega agaali geetaaga okuteekebwa awamu n’enjuba. Ebbanja lino likwata ku nkola z’amayumba (ezitakka wansi wa kWh 3) n’enkola z’ebyobusuubuzi, ezisobola okuteekebwawo okutuuka mu 2032, olwo ne zikendeera mpolampola. Amasaza mangi gawa ebisikiriza ebirala-enteekateeka ya SGIP eya California, ebisikiriza eby’okutereka eby’e New York, ne pulogulaamu ya Massachusetts eya SMART byonna biwa okusasula okusinziira ku nkola-. Ebisikiriza bino bisobola okusasula ebitundu 30-50% ku nsaasaanya yonna ey’enkola bwe bigattibwa wamu n’ebbanja lya gavumenti eya wakati.
Ebisale bya bbaatule bigeraageranyizibwa bitya ne jenereta za ‘backup’?
Ensimbi ezisaasaanyizibwa mu maaso ku nkola za bbaatule zitera okutambula emirundi 2-3x eza jenereta za dizero ku musingi gwa buli kW. Jenereta ya kW 20 eyinza okumala ddoola 8,000-12,000 okuteekebwamu, ate enkola ya bbaatule egeraageranyizibwako egula ddoola 20,000-30,000. Wabula bbaatule mu bukulu zirina zero ezisaasaanyizibwa mu kukola (tezirina mafuta, okuddaabiriza okutono) era zisobola okuvaamu ssente nga ziyita mu kukendeeza ku ssente z’obwetaavu oba empeereza ya giridi. Mu bbanga ery’emyaka 10, omugatte gw’ensimbi ezisaasaanyizibwa ku bwannannyini zitera okusinga bbaatule naddala mu nkola ezeetaaga okukozesebwa ennyo. Battery nazo zikyuka mu kaseera ako, ziwa amaanyi amayonjo eri ebyuma, era zikola mu kasirise nga tezifulumya bucaafu. Ebifo bingi kati biteeka bbaatule ezikozesebwa bulijjo ne jenereta nga backup eri okuvaako okuvaako okumala ebbanga.
Ebikulu Ebivuga Okussa mu nkola
Ensonga y’okutereka bbaatule esinziira ku nsonga ez’ekikugu, ez’ebyenfuna, n’enkola ezikwatagana okusinga ensonga emu ewaliriza. Okukendeeza ku nsaasaanya kumazeewo enkola ezisookerwako ez’ebyafaayo-ezaali zigula doola 2,571/kWh mu 2010 kati zigula doola 165/kWh, nga China etuuse wansi wa doola 100/kWh. Okukendeera kuno okwa 90%+ kwakyusa nnyo okubalirira kw’ebyenfuna mu kusaba kwonna.
Abaddukanya emikutu gy’empuliziganya beetaaga eby’obugagga ebiddamu amangu-okukuuma obutebenkevu ng’okukola amasannyalaze agazzibwawo kudda mu kifo ky’amakolero aga bulijjo. Okutereka bbaatule kuwa frequency response ne voltage support esinga tekinologiya yenna omulala. Obusobozi bw’okukyusa okuva mu kuyimirira okudda ku maanyi agajjuvu mu sikonda emu kifuula okutereka okuba okw’omuwendo ogw’enjawulo eri ebizibu ebiyinza okubaawo ku mudumu.
Okugatta amasoboza agazzibwawo kuleeta obwetaavu obutereevu obw’obudde bw’amasoboza-okukyuka. Enkola y’enjuba n’empewo tetera kukwatagana na nkola ya nkozesa. Awatali kutereka, grids ziyonoona amaanyi agazzibwawo nga ziyita mu kukendeeza ate nga zikyayokya amafuta g’ebintu ebikadde mu biseera by’obwetaavu. Okutereka bbaatule kukwata amasoboza gano agasaasaanyizibwa mu ngeri endala-ne gaddamu okugateeka mu nkola nga geetaagisa, okutumbula enkozesa y'amasannyalaze agazzibwawo.
Ebifo eby’obusuubuzi n’amakolero byettanira okutereka okusinga olw’ensonga z’ebyenfuna-okukendeeza ku ssente ezisasulwa ku ntikko y’obwetaavu, okukendeeza ku budde-ky’ebisale by’okukozesa, n’okuleeta ensimbi eziyingira mu kuddamu obwetaavu. Emigaso egy’okwesigamizibwa giwa omuwendo ogw’enjawulo naddala ku mirimu ng’okuvaako okuvaako kuleeta okufiirwa okusukkiridde. Okugatta okukekkereza ku nsaasaanya n’okukendeeza ku bulabe kitera okulaga obutuufu bw’okuteeka ssente mu bintu nga tetulina kulowooza ku butonde bw’ensi.
Obuwagizi bw’enkola nga buyita mu kukendeeza ku musolo, ebiragiro by’okugula ebintu, n’okutereeza akatale kwanguyiza okugitwala nga bukendeeza ku bulabe bw’ensimbi n’okutangaaza ku mikisa gy’okuyingiza ssente. Omusolo gwa 30% ogwa federo ogw’okusiga ensimbi gwokka gwakendeeza ku biseera by’okusasula n’emyaka 3-5 ku pulojekiti ezisinga obungi. Enteekateeka z’omutendera gwa gavumenti zikola obutale obukakafu obusobozesa okusasula pulojekiti.
Tekinologiya yennyini agenda mu maaso n'okulongoosa-obulamu bw'enzirukanya obuwanvu, obukuumi obulungi, ssente entono, n'obusobozi bw'okugatta obwongezeddwa. Enkulaakulana zino ezeeyongera zeeyongera okumala ekiseera, ne zifuula enkola eziteekeddwawo leero ennungi nnyo okusinga ezo ezaaliwo emyaka mitono gyokka egiyise. Enkola y’okulongoosa telaga kabonero konna ka kukendeera, nga kemiko endala esuubiza emigaso eminene n’okusingawo ku nkola ezenjawulo.
Bw’otunuulira ennamba z’okuteekebwa mu nkola, Amerika yayongeddeko GW 10.4 mu 2024 ate eteekateeka GW 19.6 mu 2025. California erina GW 12.5 eziteekeddwawo, Texas GW 8. Zino si pulojekiti za kugezesa-zino nkola za mutindo gwa busuubuzi-ezituusa omuwendo ogupima eri abaddukanya emikutu, abakozesa amasannyalaze, n’abakozesa amaanyi. Payipu ya GW 143 okutuuka mu 2030 eraga enkulaakulana ey’olubeerera nga yeesigamiziddwa ku by’enfuna ebikakasibwa okusinga obusobozi obw’okuteebereza.
Omuvuzi omukulu gwe muwendo ogw’omugaso. Enkola z’okutereka bbaatule zigonjoola ebizibu ebya nnamaddala-obutabeera mu ntebenkevu mu mutimbagano, okukendeeza ku masannyalaze agazzibwawo, ebisale by’obwetaavu, ebisale by’okuggwaako-ate nga bivaamu amagoba agapimibwa. Nga ebisale byeyongera okukendeera era nga n'emisango gy'okukozesa gyeyongera, ekibuuzo kikyuka okuva ku "lwaki okozesa okutereka bbaatule" okudda ku "enkola ki esooka okugiwa obutuufu."