Almost 90% of UK investor Gresham House’s half-year revenues from frequency response

By Alice Grundy
LinkedIn
Twitter
Reddit
Facebook
Email
A Gresham House battery energy storage project site. Image: Gresham House.

London Stock Exchange-listed energy storage investor Gresham House Energy Storage Fund has seen the EBITDA generated by its portfolio soar to £22.4 million (US$30.53 million) in the first half of this year, jumping from £4.5 million in H1 2020.

This was largely driven by attractive frequency response services, representing 88.5% of the total, with the remainder from the Capacity Market and power trading opportunities which Gresham House took advantage of as they arose.

Frequency response resulted in £22.04 million in revenue over H1, while Dynamic Containment generated £16.18 million, enhanced frequency response (EFR) generated £5.25 million, the Capacity Market generated £1.53 million, trading £1.36 million and firm frequency response (FFR) £0.62 million.

Gresham House said that the backdrop is “much improved” compared to mid 2020, with the importance of battery energy storage systems’ (BESS) role in providing flexibility becoming increasingly clear.

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

To read the full version of this story, visit Solar Power Portal.

13 October 2026
London, UK
Now in its second edition, the Summit provides a dedicated platform for UK & Ireland’s BESS community to share practical insights on performance, degradation, safety, market design and optimisation strategies. As storage deployment accelerates towards 2030 targets, attendees gain the tools needed to enhance returns and operate resilient, efficient assets.

Read Next

August 13, 2026
NextEnergy UK has acquired a 107MW/151MWh portfolio of standalone battery energy storage system (BESS) projects in the UK.
Premium
August 13, 2026
ESN Premium learns about Hong Kong’s role as a bridge between China and the world, from energy storage solution provider RelyEZ and investment promotion agency InvestHK.
August 13, 2026
ESS Tech Inc highlighted the potential of its recent partnership with Alsym Energy and the advancement of its sodium-ion technology in its recent financial report.
August 13, 2026
Denmark-headquartered investor Copenhagen Infrastructure Partners (CIP) has brought its 500MW, 2-hour duration Coalburn 1 battery energy storage system (BESS) into commercial operation.
August 12, 2026
Australia’s grid-scale battery storage fleet set a cluster of dispatch-interval records on 11 August in the NEM.