Voltalia’s 32MW / 32MWh revenue stacking battery project online in UK

By Molly Lempriere
January 7, 2022
LinkedIn
Twitter
Reddit
Facebook
Email
The project is Voltalia’s second UK BESS plant. Image: Voltalia.

France-headquartered renewable power producer Voltalia brought online a 32MW / 32MWh battery energy storage system (BESS) project in southern England in December, the company’s second UK battery project.

The lithium-ion BESS is located at Avonmouth, near Bristol, and consists of 16 modules, each with a capacity of 2MWh per unit.

Construction began in April of last year and it has been commissioned ahead of an expected date during the first quarter of 2022.

“The commencement of commissioning of the Hallen Battery Energy Storage Scheme is another success for Voltalia in this rapidly developing segment,” said Sébastien Clerc, CEO of Voltalia.

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

“We are very happy to support the energy transition in the United Kingdom, which is experiencing strong growth in renewable energies in its energy mix.” 

The asset will play into several markets, providing frequency management, balancing and other ancillary services to the UK grid, locally and nationally. There is a strong market for these services in the UK, with the expansion of Dynamic Containment in 2021 as well as significant demand within the Balancing Mechanism due to volatility.

This story first appeared on Current±.

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
March 5, 2026
In this second part of our interview with Wood Mackenzie energy storage analysts, we look at risk factors and mitigation across the European and US markets.
Premium
March 4, 2026
We heard from Danske Commodities’ principal originator Rimshah Javed at the Energy Storage Summit 2026, to discuss trends in BESS offtake, optimisation, FCAs in Germany and the Danish market. The latter has taken off in the past year.
March 3, 2026
A second-round auction in the UK for grid stability services, including inertia, concluded without any wins for grid-forming battery energy storage system (BESS) projects.
March 3, 2026
Allianz GI, Luxcara and Return have acquired BESS projects and portfolios in Germany, Finland and Spain; Low Carbon, OX2, Cero Generation and Revera have taken FIDs on projects in Poland, Finland and the UK; and NHOA Energy has received a 600MWh order in Italy. All in all, the projects total at least 3.7GWh of capacity.
Premium
February 27, 2026
We caught up with the CEO of owner-operator BW ESS, Erik Strømsø, about the firm’s next deployment plans, tolling trends, procurement and LDES, with its 11.5-hour Bannaby BESS in Australia further proof of lithium-ion’s long-duration potential.