UK revenues ‘markedly lower’ in 2023: Harmony Energy echoes Gresham House update

LinkedIn
Twitter
Reddit
Facebook
Email

UK energy storage fund manager Harmony Energy has said revenues in 2023 were significantly lower than 2022, postponing its dividend, after peer Gresham House said the same thing earlier in the week.

Its fund Harmony Energy Income Trust (HEIT) signalled that battery energy storage system (BESS) revenues for the year ended 31 October 2023 were markedly lower than the same period in 2022.

Revealed in the firm’s recent trading update, the discussion around a “weak revenue environment for BESS assets” echoes the thoughts of Gresham House Energy Storage Fund, another major UK-based storage investor, who said earlier this week 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.

Although HEIT did not reveal the financial impact the weaker environment has had on its BESS assets fully, its quarterly net asset value update and audited annual results are earmarked for later this month and should provide further clarity.

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

Multiple factors contribute to a reduction in revenue which ‘exceeded market expectations’

EIT revealed multiple drivers that contributed to a reduction in revenue that “exceeded market expectations”, specifically in a macro and sector-specific sense.

The first major influence is the saturation of ancillary service markets. Due to the high rate in the buildout of BESS projects in GB this has led to the saturation of ancillary services and thus driven record low clearing prices.

Interestingly, this was “widely anticipated” and the firm’s two-hour duration BESS portfolio is positioned to protect against the event and the wider balancing mechanism (BM). However, Energy-Storage.news previously reported that the impact had been “far sharper than projected” and thus rocked numerous BESS portfolios including Gresham House.

See the full version of this article on our sister site Solar Power Portal.

Read Next

Premium
October 30, 2026
How should BESS owner-operators be thinking about augmentation of their projects further down the line?
Premium
October 20, 2026
A panel at the Battery Asset Management Summit UK & Ireland 2026 last week discussed BESS capex trends and strategies to manage it.
October 19, 2026
Four-hour battery storage is less expensive than open-cycle gas turbines in the 43 markets in which both technologies were modelled, according to a new report from market research firm Wood Mackenzie.
October 13, 2026
Bankability & offtake and regulatory & system reform were the key talking points on the opening panel of the Battery Asset Management Summit UK & Ireland 2026 which runs today and tomorrow (13-14 October). 
October 9, 2026
Another edition of our BESS Industry Buzz, taking a look at what’s got industry people talking in the corridors of social media.