Spearmint Energy’s 150MW/300MWh Texas BESS online

January 4, 2024
LinkedIn
Twitter
Reddit
Facebook
Email

Battery storage developer and operator Spearmint Energy has brought its first major project online in the ERCOT, Texas market.

The company announced the start of commissioning on the 150MW/300MWh Revolution battery energy storage system (BESS) in June last year, its first major project which it acquired in June 2022, and has said the project is now online.

Engineering, procurement and construction (EPC) services were provided by Mortensen while inverter and BESS company Sungrow supplied the 134 BESS containers comprising the project as well as 45 power conversion system (PCS) units.

Spearmint said the project was brought online on schedule, on-budget and with zero accidents or injuries.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

In October 2023, Spearmint secured US$92 million in tax equity financing for Revolution which it claimed was “one of the first” uses of the new investment tax credit (ITC) for standalone energy storage, brought in by the Inflation Reduction Act last year.

The Texas market, where ERCOT is the grid operator, is the most active in the US alongside California and is primarily where Spearmint Energy is building its projects. The firm is targeting a 2025 commissioning for a 900MW three-project portfolio acquired in early 2023, all in ERCOT. ERCOT has predicted that by October 2024 there will be 9.5GW of BESS online on its grid.

Projects are generally around the two-hour market, partially to deal with regulations around minimum state of charge but also as the market looks set to move towards more energy-intensive revenue sources as ancillary services begin to saturate, potentially in the next few months.

“We are proud to commence commercial operation at Revolution, our debut grid-scale storage project, to
reliably deliver energy throughout ERCOT whenever and wherever it is needed. The project’s completion
marks a major milestone for Spearmint as we cement our position as a leader in Texas’ fast-growing battery storage market,” said Andrew Waranch, founder and CEO of Spearmint Energy, who has previously written a guest blog for this site.

Energy-Storage.news’ publisher Solar Media will host the 5th Energy Storage Summit USA, 19-20 March 2024 in Austin, Texas. Featuring a packed programme of panels, presentations and fireside chats from industry leaders focusing on accelerating the market for energy storage across the country. For more information, go to the website.

15 September 2026
San Diego, USA
You can expect to meet and network with all the key industry players again in 2025 from major US asset owners, operators, RTOs and ISOs, optimizers, software and analytics providers, technical consultancies, O&M technology providers and more.

Read Next

March 26, 2026
esVolta has closed a US$139.6 million project financing package with MUFG Bank for its 300MWh Boxcar energy storage project in Texas, US.
March 25, 2026
American Battery Factory (AFB) has secured offtake agreements for 4.5GWh of its initial 5.5GWh US factory output.
Premium
March 25, 2026
As battery energy storage systems (BESS) and electric vehicle (EV) infrastructure expand in the US and Europe, a clear contrast is becoming evident in their market growth.
March 24, 2026
Arevon, Banpu Power (BPP) and Energy Vault have made BESS project announcements totalling 1,550MWh of capacity in the US.
March 24, 2026
The legislative body of Nebraska, US, has advanced a bill to clarify and expand the state’s use of battery energy storage systems (BESS).