Tesla Locks In a Massive 1 GWh Megapack Project in the UK

Tesla Energy secured another major win in the UK. The company has signed a full EPC agreement for a 500 MW / 1 GWh battery storage project in Scotland with Matrix Renewables. At this size, battery storage moves from experimental to essential.

The UK has quietly become one of Tesla’s strongest markets for large energy projects. Over the past few years, Megapack installations have popped up across the country, including the well-known Pillswood site that once ranked among Europe’s largest battery systems. This new project raises the bar again.

Matrix Renewables confirmed the deal in a press release, describing the installation as a standalone battery energy storage system in Eccles, Scotland. While the announcement uses the generic BESS label, the partnership and scale point directly to Tesla Megapack hardware.

The specs tell the story. A system capable of delivering 500 MW with 1 GWh of total energy can power hundreds of thousands of homes for hours at a time. That kind of capacity gives grid operators flexibility when renewable generation surges or demand spikes.

Tesla’s VP of Energy and Charging, Mike Snyder, framed the project as a strong market entry for Matrix Renewables and a natural extension of Tesla’s energy business:

“We are excited to support Matrix Renewables with their entry into the UK, bringing Tesla’s track record in the market together with Matrix Renewables’ expertise and vision.”

Location is a big part of the strategy. The site sits along key transmission corridors between Scotland and England. Wind generation in Scotland often exceeds local demand, creating bottlenecks when energy needs to move south. Large batteries solve that problem by storing excess power and releasing it when the grid needs it most.

Matrix Renewables emphasized the long-term role of storage in the UK’s energy transition. Sergio Arbeláez, Managing Director for Europe and LatAm, highlighted the scale required to make renewables reliable:

“We are delivering infrastructure at the scale required to support the UK’s transition to a clean, secure, and resilient power system.”

All planning conditions have been cleared, and full consent has already been secured, meaning construction can move forward without regulatory delays.

Zooming out, this project fits into a much larger trend. Tesla has been ramping Megapack production at its Lathrop Megafactory in California to meet global demand, and it recently announced multi-billion-dollar contracts covering more than 15 GWh of storage in the U.S. alone.

projects like this matter even if they sit far from public chargers. Grid-scale batteries stabilize renewable power, support fast-charging networks, and make electrification practical at scale. This Scotland project is another reminder that the energy side of Tesla’s business keeps getting bigger and harder to ignore.

Source: Electrek