Gresham House signs 568MW contract with Octopus Energy

Gresham House Energy Storage Fund plc secures fixed contracts with Octopus Energy for 568MW of capacity, boosting annual revenues and stabilizing cash flow.
Stockage énergie Gresham Octopus

Partagez:

Gresham House has just announced the signing of fixed-price contracts with Octopus Energy, the UK’s leading electricity supplier. These contracts cover a total capacity of 568MW, representing around half of GRID’s target portfolio of 1,072MW. This initiative is designed to stabilize GRID’s revenues while providing a degree of cash flow predictability.

Income stabilization and financial security

These agreements allow Octopus Energy to pay a fixed fee per MW in exchange for the use of GRID’s batteries. The royalty is based on the life of the assets and excludes Capacity Market payments, which the projects will continue to receive separately. With the inclusion of Capacity Market revenues across the portfolio, GRID expects annual contract revenues of around £43 million over the life of these arrangements. These contracts provide GRID with greater financial security, enabling better cash flow management and reducing the risks associated with energy market fluctuations. The finalization of these agreements coincides with the completion of projects to build and/or increase certain assets, ensuring a smooth transition to integration with Octopus Energy.

Strategic and market implications

The partnership with Octopus Energy marks an important step in GRID’s strategy to diversify its revenue sources. John Leggate CBE, Chairman of Gresham House Energy Storage Fund plc, says this balanced mix of contract and merchant revenues offers shareholders a superior risk-adjusted target return while reducing direct exposure to electricity market fluctuations. Meanwhile, Ben Guest, Fund Manager at Gresham House Energy Storage Fund plc, points out that these fixed-price contracts guarantee revenues at levels currently higher than those obtained on the national wholesale and balancing markets. This diversification of income through alternative and innovative opportunities has long been a key objective of GRID’s Board of Directors.

Future prospects and developments

This agreement enables GRID to contract around 50% of its portfolio with Octopus Energy, thus ensuring a reliable level of income. The remainder of the portfolio will continue to be exposed to market prices, offering upside potential in an improving income environment. Collaboration with major energy suppliers like Octopus could become a model for other players in the sector.
GRID anticipates that this strategy will enable it to better meet investor expectations while consolidating its market position. The ability to secure stable revenues is essential to maintain investor confidence and guarantee the long-term viability of energy storage projects.

Chinese company HyperStrong and Swedish firm Repono AB announce a strategic agreement to jointly implement large-scale energy storage projects totalling 1.4 GWh in Europe by the end of 2027.
Globeleq and African Rainbow Energy finalise financing for Africa's largest standalone battery energy storage project, raising ZAR 5.4 billion ($300 million) from Absa and Standard Bank in South Africa.
Matrix Renewables and Pioneer Community Energy have signed an energy capacity contract for a 22 MW battery storage project in Kern County, operational from early 2026.
The Ignitis Group is starting the construction of three battery energy storage systems in Lithuania, with a combined capacity of 291 MW and a total investment of €130mn.
Alinta Energy has appointed GenusPlus Group to build the first phase of the Reeves Plains Energy Hub Battery, a high-capacity storage facility designed to support grid stability in South Australia.
A partnership between Indonesia Battery and Contemporary Amperex Technology aims to launch a lithium-ion battery plant in Indonesia by the end of 2026, with a 6.9 gigawatt-hour capacity and planned expansion.
State Grid Wuzhong Power Supply Company announces the completion of the energy storage compartment at Tongli substation, a key step for the upcoming integration of a 300 MW shared storage power plant in Ningxia.
Globeleq and African Rainbow Energy finalise commercial agreements for a 153 MW energy storage project in South Africa, aimed at enhancing national grid stability and optimising peak energy management.
Estimated at 40.9 billion dollars in 2024, the global microgrid market is expected to grow at an average annual rate of 19.28% to reach 191.01 billion dollars by 2033, driven notably by innovative energy contracts.
The U.S. energy storage market set a historic record in early 2025, surpassing 2 GW installed in the first quarter despite increasing uncertainty regarding federal fiscal policies and tax credits.
The Sino-Moroccan joint venture COBCO has begun manufacturing essential lithium-ion battery components at its Jorf Lasfar plant, targeting a final annual capacity of 70 GWh, enough to equip one million electric vehicles.
Trianel teams with BKW and Luxcara to build a 900 MW lithium-iron-phosphate storage park in Waltrop, the first phase of a complex that could reach 1.5 GW and stabilise the German grid.
Blue Whale Energy partners with UNIGRID to deploy behind-the-meter storage systems adapted to constrained commercial and industrial urban areas in Southeast Asia.
Northvolt, recently placed under judicial administration, has received an indicative offer from a foreign investor to acquire its Swedish assets, signaling a potential imminent restart of its battery production units.
The frame agreement aligns Jinko ESS’s utility-scale storage technology with Metlen’s development pipeline, unlocking more than 3GWh across Chile and Europe while reducing delivery risk for grid operators.
Buffalo-based Viridi has obtained the cETLus mark for its RPS150 system, meeting the UL 9540 standard only days after a public battery fire-containment demonstration.
Tesla is building a giant electricity storage facility in Shanghai, China, signing a $560 million contract to meet growing demands on the urban electricity grid.
Envision Energy signs a turnkey contract with Kallista Energy for a 120 MW / 240 MWh energy storage project in Saleux, Hauts-de-France, marking its entry into France’s stationary battery market.
The Dubai-based company obtains a USD72mn loan to add a 300MWh battery system to its 500MW solar plant in Kom Ombo, with commissioning expected in July 2025.
Asian developer Gurīn Energy selected Saft to supply a battery storage system exceeding 1 GWh in Fukushima, marking a new stage in Japan’s energy storage deployment.