Sungrow in 1GWh+ BESS deal with US developer Spearmint Energy

LinkedIn
Twitter
Reddit
Facebook
Email
Sungrow’s Powertitan 2.0 BESS solution. Image: Sungrow.

Sungrow will provide Spearmint Energy with more than a gigawatt-hour of battery energy storage system (BESS) technology after signing an agreement with the US developer.

The Chinese PV inverter manufacturer and battery storage system integrator will deploy its PowerTitan 2.0 liquid-cooled containerised BESS solution at Spearmint Energy projects in the Texas ERCOT market.

This article requires Premium SubscriptionBasic (FREE) Subscription

Enjoy 12 months of exclusive analysis

  • Regular insight and analysis of the industry’s biggest developments
  • In-depth interviews with the industry’s leading figures
  • Annual digital subscription to the PV Tech Power journal
  • Discounts on Solar Media’s portfolio of events, in-person and virtual

Or continue reading this article for free

The two companies announced the deal last week (23 August). PowerTitan 2.0 will be installed at Texas projects through 2025.

It builds on an existing relationship which has seen Sungrow BESS units power Spearmint’s first major project, also in Texas.

Completed at the end of last year, Spearmint’s 150MW/300MWh Revolution project features 134 Sungrow BESS containers and 45 Sungrow power conversion system (PCS) units.

Spearmint acquired Revolution from Con Edison in 2022 before breaking ground on it in December of that year.

It was thought to be one of the US’ first-ever BESS projects to leverage the investment tax credit (ITC) for standalone storage as the developer secured US$92 million in tax equity financing.

While a release from Sungrow and Spearmint did not disclose details of the projects to be included in the scope of the new agreement, in March 2023 Spearmint acquired a 900MW three-project portfolio in Texas from an unnamed developer, set to come online during 2025.

Research firm Wood Mackenzie ranked Sungrow as the second-top energy storage system integrator globally for 2023 in a recent report. Sungrow had been top in 2022 but lost out to Tesla last year. Meanwhile, Sungrow, Tesla and Fluence, the top three in Wood Mackenzie’s rankings for the US market, increased their combined market share of the US market to 72% last year from 60% the year before.

Thanks to ERCOT’s deregulated wholesale electricity market, Texas has the second largest installed base of grid-scale battery storage assets by state in the US after California, with about 5GW participating in ERCOT, to more than 10GW already online on California’s CAISO grid.

ERCOT also appears to be growing faster than California’s CAISO market and is due to close in on around 9.5GW of cumulative installs by the end of this year, by some projections.

BESS revenues in ERCOT average at about US$200,000/MW/year in 2023, according to Modo Energy ERCOT lead Brandt Vermillion. Speaking to Energy-Storage.news Premium for a recent interview, Vermillion said that revenues will be lower in 2024, but the wholesale price volatility that battery storage assets are well-placed to capture will increase.

2 December 2025
NH Collection Vittorio Veneto, Rome, Italy
Across two packed days, the Summit focused on three core themes: revenue & trading, the lifecycle of the battery, and optimisation tools. Attendees explored innovative strategies for enhancing asset performance and longevity, with a spotlight on key markets like Germany, Italy, and the UK. Stay tuned for details on the 2025 edition of the Battery Asset Management Summit Europe, where we’ll continue to chart the path forward for energy storage asset management.

Read Next

June 24, 2025
India’s renewable energy-adjacent battery storage sector rolls on, with new procurement and regulatory moves from SECI and CEA.
June 23, 2025
The North American Electric Reliability Corporation’s (NERC’s) 2025 State of Reliability report finds evidence suggesting battery energy storage systems (BESS) can improve primary frequency response.
June 19, 2025
Real estate platform and energy storage investor Prologis Energy has sold a 400MW/800MWh battery energy storage system (BESS) located in Alvin, Texas, US.
June 12, 2025
In Texas, two companies, Energy Vault, recognised for its gravity energy storage technology, and Agilitas, known for smaller-scale projects in the Northeastern US, have put utility-scale energy storage projects in the state into operation.
June 12, 2025
Samsung SDI will supply megawatt-scale battery storage solutions to Germany-headquartered commercial and industrial (C&I) segment specialist Tesvolt.

Most Popular

Email Newsletter