Work starts at Harmony and FRV’s Clay Tye development

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Harmony Energy
Construction work is under way at Clay Tye, the UK's largest battery storage development project.

Fotowatio Renewable Ventures (FRV), part of Abdul Latif Jameel Energy and one of the world’s leading renewable energy companies, and UK developer Harmony Energy, have announced the initial construction works of Clay Tye, UK’s largest battery storage development project in their mission to contribute to the decarbonisation of Britain’s energy grid.

The Clay Tye site is located in Essex and will have a total power of 99MW / 198MWh, making it the biggest project of its kind under construction in the UK. Clay Tye follows the successful completion of FRV and Harmony Energy’s West-Sussex based battery storage facility, Contego, which has a capacity of 34 MW / 68 MWh. It also follows the completion of FRV’s Dorset-based Holes Bay battery energy storage project, which has a capacity of 7.5 MW / 15 MWh. The project reflects FRV’s long-term investment plan to develop energy storage projects globally in countries like Australia, Mexico, Chile and Spain.

Clay Tye uses 52 Tesla Megapack lithium-ion batteries, together with Tesla’s Autobidder AI software for energy capacity exchange and efficient project management. The Megapack batteries have a capacity of 198 MWh and are connected to UK Power Networks distribution network, providing the capability to store energy from renewable sources and afford peak-time flexibility to the UK National Grid as part of the UK’s continuing shift away from fossil fuels.

Both FRV and Harmony Energy expect the BESS plant to be finished and energizing during the first quarter of 2023.

Felipe Hernández, FRV Managing Director of Engineering and FRV-X said: “Clay Tye is going to be a significant milestone in our growth objective in the UK energy storage market. This BESS strengthens the long-term sustainability of our business model and our leadership position in the market. In this way, we are continuing the path for the future FRV’s assets in the country, which are in the commercial operation, construction and development phase.”

Peter Kavanagh, Harmony Energy CEO, said: “This is another significant milestone in our continued growth and we’re pleased to be working alongside FRV once again. Clay Tye has taken six years to reach this stage. It is one of the largest projects of its kind in the UK and will contribute to future energy security whilst supporting decarbonisation of the grid.”

Fady Jameel, Deputy President and Vice Chairman, Abdul Latif Jameel, said: “We are always looking for opportunities to spearhead the move to a more sustainable future. Today, we are collaborating with Harmony Energy to commence the construction of Clay Tye, which highlights our commitment to tackling climate change in a tangible and sustainable way. The energy transition has always been a core priority for us, and we are working hand-in-hand with the right partners to develop an energy system that is more sustainable, secure and affordable.”

David Menéndez, Head of FRV-X affirms “We are proud to start construction of one of UK´s largest battery storage development by MWh and contribute to this country´s decarbonisation.”

Recently FRV-X (FRV´s innovation and venturing division) became Evergen major investor after closing a A$15 million Series-B fundraise. Evergen is a market leading renewable energy software business that optimises the performance of residential, commercial, and utility-scale battery systems. Batteries are then orchestrated in fleets enabling network operators, retailers and others to use these systems as Virtual Power Plants (VPPs).

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