99MW/198MWh BESS energised as Harmony Energy and Fotowatio Renewable Ventures continue partnership

March 22, 2024
LinkedIn
Twitter
Reddit
Facebook
Email

Harmony Energy and Fotowatio Renewable Ventures (FRV) have completed another joint project, energising a 99MW/198MWh battery energy storage system (BESS) in Essex.

The Clay Tye project operates 52 Tesla Megapack lithium-ion batteries, each with a capacity of 198MWh, connected to the UK Power Networks’ distribution network. The project also uses Tesla Autobidder AI software for energy capacity sharing.

Both Felipe Hernández, chief innovation officer of FRV and Peter Kavanagh, CEO of Harmony Energy, called the project “an important milestone”. David Menéndez, managing director UK and BESS CoE at FRV added that the project was “one of the UK’s largest battery storage in operation per MWh”.

The project builds on the joint portfolio shared by the renewable energy development company and the renewable energy operator, which includes the 34MW/68MWh Contego BESS in West Sussex and the 7.5MW/15MWh Holes Bay.

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 Hole Bay project began operation in June 2020, just as construction began on the Clan Tye site. FRV closed financing for a non-contracted revenue model for the project with NatWest in October 2021.

Earlier this year, Harmony Energy Income Trust, advised by Harmony Energy Advisors Limited, a wholly-owned subsidiary of Harmony Energy, successfully bid six BESS projects in the latest T-1 Capacity Market auction for delivery years 2024/25, which the company says will increase its revenue for this period to £3.2 million.

This article was taken from our sister site, Solar Power Portal.

24 February 2026
InterContinental London - The O2, London, UK
This isn’t just another summit – it’s our biggest and most exhilarating Summit yet! Picture this: immersive workshop spaces where ideas come to life, dedicated industry working groups igniting innovation, live podcasts sparking lively discussions, hard-hitting keynotes that will leave you inspired, and an abundance of networking opportunities that will take your connections to new heights!
9 June 2026
Stuttgart, Germany
Held alongside The Battery Show Europe, Energy Storage Summit provides a focused platform to understand the policies, revenue models and deployment conditions shaping Germany’s utility-scale storage boom. With contributions from TSOs, banks, developers and optimisers, the Summit explores regulation, merchant strategies, financing, grid tariffs and project delivery in a market forecast to integrate 24GW of storage by 2037.
15 September 2026
San Diego, USA
You can expect to meet and network with all the key industry players again in 2025 from major US asset owners, operators, RTOs and ISOs, optimizers, software and analytics providers, technical consultancies, O&M technology providers and more.
15 September 2026
Berlin, Germany
Launching September 2026 in Berlin, Energy Storage Summit Germany is a new standalone event dedicated to Germany’s energy storage market. Bringing together investors, developers, policymakers, TSOs, manufacturers and optimisation specialists, the Summit explores the regulatory shifts, revenue models, financing strategies and technology innovations shaping large-scale deployment. With Germany targeting 80% renewables by 2030, it offers a focused platform to connect with the decision-makers driving the Energiewende and the future of utility-scale storage.
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
February 13, 2026
Energy-Storage.news Premium hears from Giovanni Damato, President of organic flow battery company CMBlu Energy, Inc., on changes to FEOC and Section 301 tariffs.
February 13, 2026
Major Australian energy generator-retailer EnergyAustralia has reached financial close on its 250MWh Hallett battery energy storage system (BESS) in South Australia.
February 13, 2026
CleanCo Queensland has officially opened the Swanbank BESS, a 250MW/500MWh facility in Ipswich, Australia.
February 12, 2026
Potentia Renewables has successfully closed financing for the Skyview 2 battery energy storage system (BESS) in Edwardsburgh Cardinal, Ontario, Canada.
February 12, 2026
Two BESS projects in Yuma County, Arizona, one from BrightNight, and one from Leeward Renewable Energy, have reached significant milestones.