UK government launches £28 million Ultra-Long Duration Energy Storage Challenge

LinkedIn
Twitter
Reddit
Facebook
Email

The UK government has launched a new grant funding programme for energy storage technologies that can provide inter-day and seasonal energy shifting applications, primarily electrochemical batteries and hydrogen.

The Ultra-Long Duration Energy Storage Challenge was launched last week (20 August) and is offering £28 million (US$38.15 million) in grants to technologies that can store and discharge energy for over 100 hours.

The challenge aims to strengthen UK energy security, create jobs in new industries, and reduce energy bills in the long-term, the government said. UK innovators can now bid for funding, it added.

It follows the selection and announcement of the 16 winning projects totalling 7,645MW in the government’s long-duration energy storage (LDES) cap-and-floor scheme in June. However, those projects range from 8- to 22-hour durations, set to come online over 2030-33. Looking beyond that into the late 2030s and 2040s, much longer durations will be needed as intermittent solar and wind generation take up a larger share of the energy mix.

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

The new funding was announced by the Department for Business, Innovation, Science and Trade (BIST), the Department for Energy Security and Net Zero (DESNZ), UK Research and Innovation (UKRI) and Michael Shanks and Chris McDonald, Ministers of State for DESNZ and BIST respectively.

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.
2 December 2026
Italy
Battery Asset Management Summit Europe is the annual meeting for owners, operators, investors, and optimisation specialists working with operational BESS assets across the continent. The Summit focuses on how to maximise performance and revenue, manage degradation, integrate advanced optimisation software, navigate evolving market and regulatory frameworks, and plan for repowering or end-of-life strategies. With insights from Europe’s most active storage markets, it equips attendees with practical guidance to run resilient, profitable battery portfolios as the sector scales.

Read Next

August 26, 2026
In this news roundup, Eos and WATTMORE; Gotion and Gamma Technologies; Middle River Power and PowerTransitions; and Electra AI and MinTech are advancing battery energy storage system (BESS) technology in the US.
August 26, 2026
A trio of BESS updates in Germany from power firm Alpiq, CATL-backed system integrator CNTE and virtual tolling platform Terralayr, totalling around 260MW of operational capacity. 
Premium
August 25, 2026
Raafe Khan of Camelot Energy Group breaks down financial realities, market contradictions, and other dynamics shaping the energy storage space.
August 24, 2026
Invinity Energy Systems has hired an EPC partner for its gigawatt-hour-scale vanadium redox flow battery (VRFB) energy storage project in Laufenberg, Switzerland.
August 20, 2026
Danske Commodities will optimise a BESS project that developer-operator BeGreen has added to a solar PV plant in Denmark, which the trading house already operates for BeGreen.