Spearmint Energy breaks ground on 300MWh ERCOT battery storage project

LinkedIn
Twitter
Reddit
Facebook
Email

Battery storage developer Spearmint Energy has started building a 150MW/300MWh unit in the ERCOT, Texas market, its first project.

The company announced the start of construction of the two-hour duration ‘Revolution’ energy storage project in West Texas last week (15 December). The new developer acquired the project, which will be next to a 279MW wind farm, in July.

Engineering, procurement and construction (EPC) specialist Mortensen is delivering the project through the construction of the battery storage facility, substation and transmission line for connection to the ERCOT (Electric Reliability Council of Texas) grid.

It will be one of the largest battery energy storage systems (BESS) in the US when it is commissioned in mid-2023, Spearmint claimed, and will help the Texas grid transition away from fossil fuels.

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

CEO Andrew Waranch, who recently wrote a guest blog for Energy-Storage.news about why the Texas grid needs battery storage added:

“Revolution will provide critical grid resiliency and reliability services to enable the continued deployment of low-cost renewable energy in ERCOT at a time when our nation is grappling with challenges brought by a changing climate, rising oil and natural gas prices, increasing demand for electricity, and the impacts of supply chain constraints, inflation, and tariffs on the construction of new generation facilities.”

The vast majority of Texas’ renewable energy comes from wind farms, which is in contrast to sunnier states like California which mostly get theirs from solar PV. Wind is a more intermittent resource than solar PV and so batteries have a key role to play in smoothing out the peaks and troughs in generation.

As of July 2022, ERCOT had 1,639MW of BESS projects connected and synchronised to its grid. According to the grid operator’s own data, it has around another 1,800MW of BESS projects expected to enter commercial operation before the end of the year, bringing the total to around 3,400MW online.

Miami-headquartered Spearmint also recently hired four executives to its team, including new senior VP of project technology Chris Wright, formerly of utility Nextera Energy Resources; new senior VP of project execution Jeff Jackson, formerly of Mortensen; new VP of project finance Nicolas Cottely, formerly of solar and storage developer Origis Energy; and a new data scientist Allen Yu from energy trading and risk management firm XO Energy.

3 November 2026
Málaga, Spain
Understanding technology and supplier selection for Europe’s utility-scale PV market in 2027. PV ModuleTech Europe 2026 is a two-day conference that tackles these challenges directly, with an agenda that addresses all aspects of PV module, inverter and battery supplier selection; product availability, technology offerings, supply chain traceability, quality assurance, factory auditing, system reliability, and supplier bankability.
20 April 2027
Renaissance Dallas at Plano Legacy West Hotel, Dallas, Texas, Dallas
Policy, Procurement and Power Demand: Defining the Next Chapter for Energy Storage. Two days in Dallas where developers, IPPs, investors, utilities and the manufacturers building the technology come to close deals, not swap business cards. If you need to be in the room with the people deploying capital into US storage, this is that room.

Read Next

October 22, 2026
In recent North American sodium-ion news, Hithium is entering the Canadian market with two BESS solutions, while Peak Energy has closed a Series B financing round led by GM.
October 22, 2026
As demand for battery storage soars, the European Union (EU) has tried to grow its local battery supply chain with mixed success so far, writes PV ESS analyst Charlotte Gisbourne.
October 22, 2026
Science safety leader UL Solutions has announced a new certification pathway intended to help manufacturers of modular direct current (DC) battery energy storage systems (BESS).
October 21, 2026
Distributed energy storage company Viridi and developer and financier Good Carbon Co. have announced the deployment of a 3.75MWh energy storage project in Buffalo, New York.
October 20, 2026
Zinc hybrid cathode battery and storage system maker Eos Energy Enterprises has reported its highest quarterly revenue to date alongside a narrowing gross margin loss.