Tesla supplying 68MWh of Megapack battery storage to Fotowatio’s second project in UK

LinkedIn
Twitter
Reddit
Facebook
Email
FRV-Harmony Energy’s already-operational Holes Bay project in England. FRV said in late 2019 that it has a “strategic plan to develop energy storage projects” around the world. Image: Harmony Energy.

Developer Fotowatio Renewable Ventures (FRV) has unveiled the second utility-scale battery project in its “strategic plan to develop energy storage projects globally,” having closed funding and construction contracts for the 34MW / 68MWh project in West Sussex in southern England, UK.

As with its first utility-scale battery project, also in the UK, FRV is collaborating with local developer Harmony Energy on the Contego project, made up of a system of 28 Tesla Megapack lithium-ion battery systems that will use Tesla’s Autobidder AI software for real-time trading and control.

Work on the project is set to start this month near Burgess Hill in West Sussex, with the site expected to be completed in 2021, making the project one of the largest battery energy storage plants in the UK.

It comes as part of a strategic energy storage pipeline that is set to be launched globally, with the two companies having already worked together on the Holes Bay battery storage project, also in the south of England. This also utilises Tesla’s Megapacks, although that one consists of six Megapack, with a total output and capacity of 7.5MW / 15MWh.

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

Holes Bay has been operating since June 2020, and has participated in the EPEX spot market, Firm Frequency Response (FFR) and the Balancing Mechanism (BM), being the first site to go live in National Grid ESO’s new wider access application programming interface for the BM.

To read the full version of this story visit Solar Power Portal.

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

October 9, 2026
Another edition of our BESS Industry Buzz, taking a look at what’s got industry people talking in the corridors of social media. 
Premium
October 9, 2026
Intilion has just tied up with CATL for sodium-ion BESS deployments in Europe, following Alfen’s similar move in July, while Merus Power tells us it is in the process of integrating with the OEM’s new product. 
October 9, 2026
Finland is the Nordic region’s most-talked-about market for the moment, with project deals and other battery storage development activity from local and international players.  
October 7, 2026
UK market’s shifting dynamics see listed fund Gore Street’s shareholders take key vote while CIP and BW ESS progress 4-hour duration battery storage assets at significant scale.
October 6, 2026
BESS operators should be planning their projects against different locational price and charging regimes of the future rather than solely against the current revenue opportunities.