The Energy Storage Report 2024

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


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.

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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.

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.

28 March 2024
8am (PDT) / 11am (EDT) / 4pm (CET)
This webinar provides invaluable insights into the challenges, risks, and solutions associated with battery energy storage systems. Participants will gain a deeper understanding of the importance of proactive monitoring, maintenance, and the role of battery analytics in optimising BESS performance and ensuring regulatory compliance. Additionally, attendees will learn about industry best practices and emerging trends in BESS management, enhancing their ability to effectively deploy and operate BESS infrastructure.

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