Gresham House Energy Storage surpasses 1GWh milestone

Gresham House Energy Storage surpasses 1GWh milestone

Gresham House Energy Storage Fund (GRID), the UK’s largest fund investing in utility-scale battery energy storage systems (BESS), has completed the augmentation of its Enderby and West Didsbury projects, which are both now trading at their increased capacity.

This increases GRID’s operational capacity to over 1GWh (1,030MWh), the first battery storage business in the UK to have passed this milestone.

The augmentation of the Enderby (50MW) and West Didsbury (50MW) sites has involved upgrading each from one-hour to two-hour duration, adding 100MWh of additional operational capacity. Both sites had been designed for these upgrades from inception.

This milestone marks the completion of the second and third augmentation projects in line with the plan set out in GRID’s latest annual report. So far, in 2024, GRID has added 117MWh to currently operational projects through augmentation, taking the operational portfolio to 790MW/1030MWh. A further 220MWh will be added with the remaining four augmentation projects.

John Leggate CBE, Chair of Gresham House Energy Storage Fund, says, “We are very pleased at reaching this strategically important milestone since for the UK to meet its net zero targets, BESS needs to be at significant scale. The Board has taken the decision to focus part of its capital allocation on upgrading certain existing sites which it believes is an efficient use of capital, de-risks project execution and improves the portfolio’s revenue potential.

In addition, securing revenues through our recent tolling agreement with Octopus Energy demonstrates the growing range of opportunities to deliver returns from balancing supply and demand, while also reducing the volatility of these revenues.”

Ben Guest, Fund Manager of Gresham House Energy Storage Fund and MD of Gresham House New Energy, adds, “We’re delighted to have exceeded 1GWh of operational assets, the first battery storage business in the UK to hit this milestone. As well as a memorable moment in GRID’s growth, this marks the continued progress in the UK’s energy transition with batteries being connected to balance rapidly rising renewable generation with demand.

“It is well documented that the UK BESS market is moving to a trading strategy dominated environment. The upgrade of these two sites to two-hour duration enables these projects to capitalise on that trading opportunity.”

For more from Gresham House Energy Storage, click here.

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