UK’s Harmony Energy expects ‘attractive returns’ in 2024 as BESS trading conditions improve

By George Heynes
March 1, 2024
LinkedIn
Twitter
Reddit
Facebook
Email

London Stock Exchange-listed battery storage investment firm Harmony Energy Income Trust (HEIT) has predicted that it can generate “attractive returns” despite the ongoing woes in battery energy storage revenues in the GB market.

Disclosed in the firm’s results for the financial year ended 31 October 2023, this prediction comes despite HEIT’s announcement that its battery energy storage system (BESS) revenues were markedly lower than the same period in 2022, as reported by our sister site Solar Power Portal earlier this month.

Revealed in the firm’s recent trading update, the discussion around a “weak revenue environment for BESS assets” echoed the thoughts of Gresham House Energy Storage Fund, another major UK-based storage investor, who said that this was due to assets not being able to participate in balancing the GB grid or replacing gas-fired generation to their fullest capability.

In the financial results, however, HEIT’s chair, Norman Crighton, stated that “independent market experts expect trading conditions to improve throughout 2024”, with the firm’s longer-duration 2-hour batteries continuing to outperform shorter-duration BESS.

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

One of the major influences that impacted HEIT’s portfolio was the implementation issues of National Grid ESO’s Open Balancing Platform, an aspect that Modo Energy had previously referenced in contributing to December having the lowest BESS revenues since 2020.

The platform, which introduced bulk dispatch functionality, allows for more instructions to be issued to batteries at any one time, but due to technical issues, the control room reverted to legacy systems for dispatching batteries on 15 December.

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

Premium
April 2, 2026
What are the merchant opportunities in Germany, where there are almost no capacity schemes or subsidies for energy storage? A panel of expert speakers discussed the opportunities in Europe’s largest energy market on the panel at the Energy Storage Summit 2026 in London in February.
Premium
April 2, 2026
MetaWealth COO Michael Topolinski IV discussed the firm’s first BESS project in Romania, which is partially financed with bonds marketed at retail investors. 
April 2, 2026
SSE Renewables, Matrix Renewables, Drax and Voltaria have all progressed large-scale BESS projects in the UK, all-in-all totalling 1.8GWh of new capacity.
April 1, 2026
Australian BESS face new financing reality as spreads halve to AU$100/MWh and lenders demand 50-70% contracting amid 15GW deployment surge.
March 31, 2026
Hithium has signed a cooperation agreement for a potential 3GWh of battery storage deployments in the Asia-Pacific region with infrastructure investor Brawn Capital.