The Energy Storage Report 2024

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Canadian Solar’s e-STORAGE to supply BESS for 800MWh Arizona project

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The battery energy storage system (BESS) arm of PV module manufacturer Canadian Solar has won a 800MWh order for a project in Arizona from Tucson Electric Power (TEP).

Canadian Solar subsidiary e-STORAGE will provide its proprietary BESS solution SolBank for the 200MW/800MWh Roadrunner Reserve System project, that will be built by construction and engineering firm DEPCOM Power for TEP.

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TEP will own and operate the project which is set to come online in the summer of 2025.

SolBank is a lithium iron phosphate (LFP) battery cell-based system which Canadian Solar recently launched having previously used a white-labelled BESS product for its projects. The switch to a proprietary solution was blamed for anticipated flat growth in BESS shipments this year.

The firm is targeting 10GWh of annual BESS production capacity by the end of this year.

Canadian Solar’s announcement described the project for TEP as a “1GWh DC” order, alluding to the need to oversize a project to account for losses during conversion from DC power to AC at the inverter.

It is the firm’s second large order in Arizona after it secured a 1,200MWh (AC) order for the Papago project, which is being developed by its developer and independent power producer (IPP) arm Recurrent Energy for another utility, Arizona Public Service Company (APC), also set for a 2025 operation date.

Arizona has fast become one of the most active energy storage markets in the US after the leading states California and Texas, with utilities signing long-term power purchase agreements (PPAs) or ‘tolling agreements’ for large-scale projects making them more bankable.

Just this week a 940MWh project was launched by electric co-operative AEPCO while developer and IPP Plus Power completed the largest single-ever financing for a standalone project, in Arizona, as part of a US$1.8 billion financing round.

See more coverage of the Arizona market here.

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