SUBSCRIBE
PROFILE

Greenflash acquires 200 MW battery storage project in Texas

Greenflash Infrastructure has finalised the acquisition of Rock Rose, a 200 MW energy storage project located in Fort Bend County, to strengthen its ERCOT market portfolio.

Share:

Comprehensive energy news coverage, updated nonstop

Annual subscription

8.25$/month*

*billed annually at 99$/year for the first year then 149,00$/year ​

Unlimited access • Archives included • Professional invoice

SUBSCRIBE - 99$/year

OTHER ACCESS OPTIONS

Monthly subscription

Unlimited access • Archives included

5.2$/month*
then 14.90$ per month thereafter

FREE ACCOUNT

3 articles offered per month

FREE

*Prices are excluding VAT, which may vary depending on your location or professional status

Since 2021: 35,000 articles • 150+ analyses per week

Greenflash Infrastructure, a company specialising in large-scale energy infrastructure projects, has announced the acquisition of Rock Rose, a 200 MW / 400 MWh battery energy storage facility located in Texas. This pre-Notice-to-Proceed (pre-NTP) project was sold by developer Advanced Power. The asset is fully permitted and interconnection-ready, with commercial operations targeted for mid-2027.

Strategic reinforcement of the ERCOT portfolio

Rock Rose adds to Greenflash’s existing capacity in the Electric Reliability Council of Texas (ERCOT) network management zone. The project was selected for its interconnection position, transmission access, and its ability to support regional grid reliability. Greenflash is targeting the deployment of 5 GW of capacity across ERCOT, and this acquisition represents a step toward that objective.

The Rock Rose project is key to meeting increasing flexibility and grid stability needs in a region marked by strong energy demand growth. With a clear timeline in place, the project is positioned to begin service following the expected operational go-ahead in 2026.

A sale aligned with Advanced Power’s strategy

Advanced Power, the developer of the project, is continuing its strategy of technological diversification by transferring assets to operators specialised in long-term operations. Historically active in thermal and renewable energy, the company now includes battery energy storage systems (BESS) in its portfolio of power solutions.

The sale of the Rock Rose project allows Advanced Power to align with operators capable of delivering large-scale construction and long-term operation. Located in Fort Bend County, the site is strategically positioned in a grid-constrained zone.

Long-term targets for Greenflash

With this asset, Greenflash continues its focus on shovel-ready or near-execution projects. The company’s model involves securing already permitted capacity to reduce risks linked to planning and regulatory procedures. Its development strategy is fully centred on utility-scale storage in the ERCOT market, one of the most dynamic in the United States for grid flexibility.

  • Popular on energynews.pro
Enbridge commits $3bn to new projects while maintaining 2025 guidance
India and Russia strengthen nuclear cooperation with new projects
LibertyStream signs strategic agreement with Packet Digital for US lithium carbonate
NextNRG posts 196% revenue growth in October
Newcleo considers shifting €16bn nuclear projects from the UK to the United States
Rondo Energy commissions industrial heat battery in Thailand
US-based Rondo Energy and SCG Cleanergy have completed the installation of a 33 MWh heat battery at a cement plant in Thailand, the first of its kind in Southeast Asia, delivering steam to power a turbine for industrial electricity generation.
Entech and Primeo Energie launch joint venture for 100 MW of battery storage by 2029
Entech and Primeo Energie create Primtech Batteries to develop battery electricity storage projects in France and the European Union, targeting 100 MW installed by 2029.
NineDot Energy and Solar One launch education programme on energy storage in New York
Three New York public high schools are introducing a new energy storage module this year, through a partnership between NineDot Energy and Solar One aimed at preparing students for careers in distributed energy.
Nuvve invests $10mn in three energy storage projects in Denmark
Nuvve Holding Corp. plans three 2MW battery installations in Eastern Zealand to strengthen the Danish grid and optimise revenues through its proprietary software platform.
HS Hyosung invests €120 mn with Umicore to develop silicon anodes
HS Hyosung partners with Umicore to produce silicon anodes, a key material for next-generation batteries, through a €120 mn investment to strengthen its position in energy storage.
LG Energy Solution enters aerospace sector with South 8 Technologies
LG Energy Solution partners with South 8 Technologies to develop lithium-ion batteries capable of operating at -60 °C, strengthening its position in the space sector alongside KULR Technology Group and NASA.
Masdar launches Uzbekistan’s largest battery energy storage project
Masdar commits to developing a 300MW/600MWh battery storage system in Uzbekistan, marking a major step in modernising the national grid and securing investments in renewable energy.
Jabil and Inno launch Thai site to manufacture battery energy storage enclosures
Jabil and Inno will co-develop a 15,000 sqm plant in Rayong, Thailand, to manufacture metal enclosures for battery energy storage systems, aiming to enhance vertical integration and secure supply chains.
Adani Group invests in a mega battery storage project in Khavda
Adani Group launches a 1126 MW project in Khavda, marking its first entry into energy storage, with one of the largest BESS systems ever built at a single site.
Kuwait in talks for 1.5 GW battery storage to ease grid pressure
Kuwait is preparing a battery storage project with a capacity of up to 6 GWh to stabilise its power grid and address rising electricity demand.
Quino Energy raises $16mn to industrialise organic electrolytes for flow batteries
Quino Energy secures $16mn in funding to scale global production of its organic electrolytes, with strategic support from investor Atri Energy Transition.
Envision and Statera partner on 680MW storage project in the United Kingdom
China's Envision Energy will supply a 680MW battery storage system to UK-based Statera Energy as part of the Carrington project, one of the largest in the country to reach financial close.
Girasol Energy launches grid-scale storage aggregation with two projects in Japan
Girasol Energy begins grid-scale battery aggregation with two facilities totalling 4MW in Japan, marking a strategic expansion into balancing markets.
CBAK Energy posts 36.5% revenue increase in Q3 driven by Hitrans
Driven by the recovery in the raw materials market, CBAK Energy posted a sharp rise in revenue in the third quarter, while its battery business enters a complex industrial transition.
Daiwa, Fuyo and Astmax commission 100MWh battery storage system in Sapporo
Daiwa Energy & Infrastructure, Fuyo General Lease and Astmax have commissioned a 50MW/100MWh battery storage station in Sapporo, marking their entry into Japan’s large-scale energy storage market.
Sonnedix launches 125MWh storage project at its Oita solar plant
Sonnedix has started construction on a 125MWh battery storage system at its 30MWAC Oita solar site, with commercial operation planned for November 2026 and a JPY21.4bn ($142mn) financing secured.
Tamagawa Energy acquires 2MW storage project in Japan for JPY690mn
Tamagawa Energy has completed the acquisition of a 2MW/8MWh battery site in Kagoshima for JPY690mn ($4.57mn), marking its entry into grid-scale storage.
Tokyo Asset Solution deploys 13.2MWh of storage in Tokyo and Kumamoto
Tokyo Asset Solution invests in two storage projects, including a standalone site in the Japanese capital, marking its entry into the large-scale sector with national and international partners.
LEAG and Fluence launch Europe’s largest electricity storage project in Germany
LEAG Clean Power and Fluence Energy will build a 4 GWh battery energy storage system in Germany, marking a major step in the industrialisation of storage capacity at a European scale.
Plus Power secures $160mn for two battery storage projects in New England
Plus Power secured $160mn in tax equity investments from Morgan Stanley to fund two battery storage facilities in Massachusetts and Maine, the largest ever developed in New England.

All the latest energy news, all the time

Annual subscription

8.25$/month*

*billed annually at 99$/year for the first year then 149,00$/year ​

Unlimited access - Archives included - Pro invoice

START - 99$/year

Monthly subscription

Unlimited access • Archives included

5.2$/month*
then 14.90$ per month thereafter

*Prices shown are exclusive of VAT, which may vary according to your location or professional status.

Since 2021: 30,000 articles - +150 analyses/week.