United Kingdom

In the UK, BW ESS has partnered with and invested in Penso Power, one of the largest and most recognized developers of energy storage in the country. BW ESS and Penso are jointly planning to build at least 1GW of BESS in the UK, while Penso’s total development pipeline exceeds 2GW. Our portfolio is uniquely focused on large capacity (>100MW) and long duration sites (2-5hrs) in the Midlands and South of England. This strategy ensures we have sites that are close to load, offer economies of scale and remain future proof in a market that is moving away from grid support and towards wholesale energy arbitrage.

Within this collaborative effort, the following projects are fully consented:

A 100MW, 2.5hrs duration energy storage project located in Hampshire.
Currently under construction, with a projected commissioning date set for the fourth quarter of 2024.

Hams Hall:
A 400MW energy storage project strategically positioned near Birmingham, a key energy demand center in the UK.
We expect to start construction next year, with a target energization in 2026.

A 200MW project situated between Birmingham and Coventry, two key energy demand hubs in the UK.
We expect to start construction next year, with a target energization in 2026.

Penso Power website

The 100MW/136MWh Minety project, developed by Penso Power and energized in 2021, was Europe’s largest operational battery storage project at the time.


In the Nordics, we have invested in and partnered with Ingrid Capacity, a leader and pioneer within the Nordic BESS space, with a pipeline exceeding 500MW in Sweden. BW ESS and Ingrid are also assessing potential opportunities in other Nordic countries.

Presently, 89MW of BESS projects are under construction (SE3/SE4 price zones), ranging in capacity between 5MW and 20MW. The batteries are generally of a one-hour duration, as they are targeting the grid support market, and expected COD is in Q3 2024.

Under our partnership, BW ESS and Ingrid are planning to build up to 400MW of BESS projects in Sweden.

Ingrid Capacity