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!

Read Next

November 27, 2025
The Western Australian government has launched the first stage of an Expression of Interest (EOI) process for a 50MW/500MWh vanadium flow battery energy storage system (VBESS) in Kalgoorlie.
Premium
November 26, 2025
Energy-Storage.news Premium speaks with Michael Kirschner, Managing Director, US, for Habitat Energy, about optimising BESS projects in ERCOT.
November 26, 2025
Mayor of Greater Manchester Andy Burnham marked the commencement of construction at Highview’s 300MWh liquid air energy storage facility.
November 26, 2025
Potentia Energy has received federal environmental approval for its 1,000MWh Tallawang Solar Hybrid project, and Fluence has delivered its Gridstack battery energy storage equipment to Ampyr Australia’s 600MWh Bulabul Battery installation.
Sponsored
November 26, 2025
As Australia accelerates its transition toward renewables, demand for reliable & sustainable energy storage solutions has never been higher.