Press Releases — Grenergy secures capacity contracts for 760 MWh in four storage projects in the United Kingdom

• The contracts, effective between October 2029 and October 2030 and with a duration of 15 years, guarantee a minimum remuneration of over €40 million.
• In February, the company also secured a solar supply contract for its Fibden hybrid project, with 53 MWp and 160 MWh of storage in Worcestershire.

Madrid, March 12, 2026. Grenergy has been awarded capacity contracts for four storage projects in the United Kingdom, with a total capacity of 760 MWh. These contracts were assigned in the latest auction organised by NESO —the British energy system operator— for a period of 15 years.

The four projects — two hybrid and two stand-alone — are called Scalm Park, Spring Lane, Buxton Road and Fibden Farm. Together, they have a nominal power of 190 MW, equivalent to 760 MWh of storage capacity. They will operate as a reserve for the British electricity system during periods when the minimum required capacity is not guaranteed.

Starting between October 2029 and October 2030, these services will be remunerated at a fixed price (indexed to CPI) of £27.10/kW/year throughout the 15-year contract period. In total, the company will receive a guaranteed minimum financial allocation of over €40 million.

Capacity revenues represent a portion of the revenue structure planned for each project. These will be supplemented by revenues from energy trading and participation in all available markets, including complementary services.

In addition, Grenergy was awarded a solar supply contract for the Fibden Farm plant in February at the latest renewable energy auction in the United Kingdom. The agreement, which will run for 20 years from 2028–2029, guarantees minimum revenues of £55 million.

Consolidated presence in Europe

Grenergy has a solid presence in Europe, with operations in Spain, Italy, Germany, Poland, Romania and the United Kingdom. In addition to its portfolio of solar and hybrid projects under development, the company is developing Greenbox, its stand-alone storage platform in the region, which was presented during its latest Capital Markets Day held in May 2025 in London.

With more than 30 GWh in stand-alone batteries under development, Greenbox is positioned as one of the leading storage platforms on the continent. In line with this, the company has just closed a pioneering agreement in the Spanish market: a 10-year financial tolling agreement with an Investment Grade-rated off-taker for its stand-alone storage project in Oviedo, Spain (600 MWh).

Grenergy has also recently been awarded capacity contracts for 2.1 GWh in stand-alone storage projects in Poland and has obtained a grant of nearly €8 million from the Polish government for other stand-alone projects (136 MWh) that the company plans to implement in the country.

The company continues to analyse opportunities to increase Greenbox’s pipeline and close new tolling agreements in the six countries that currently make up its European stand-alone storage platform.

About Grenergy

Grenergy is a Spanish multinational clean energy producer. Founded in 2007, it has been listed on the Spanish stock exchange since 2015 and currently has a market capitalization of around €3 billion. The company develops, builds, and operates photovoltaic solar plants and is a pioneer in the energy storage industry.

With a team of over 600 professionals, Grenergy operates across three key regions: Europe (Spain, Italy, Germany, Poland, Romania, and the United Kingdom), North America (United States) and Latin America (Chile, Peru, Mexico, and Colombia). Its global portfolio exceeds 75 GWh of storage capacity and 12 GW of solar power in various stages of development.

Thanks to its strong commitment to battery technology, Grenergy can deliver clean, affordable, reliable, and continuous energy—anywhere, anytime, 24/7.