Largest BESS in the Netherlands online

LinkedIn
Twitter
Reddit
Facebook
Email

Developer-operator SemperPower has brought online its second large-scale BESS in the Netherlands in the space of a month, a 68MWh system, the largest in the country.

The company has energised the 30MW/68MWh ‘Pollux’ battery energy storage system (BESS) project, it announced today (20 December).

Pollux is located on the same site as SemperPower’s Castor BESS, slightly smaller at 30MW/62MWh, which the company announced the start of operations on a month ago.

System integrator Alfen, which is based in the Netherlands, provided the BESS for the Pollux project through a turnkey solution including civil works, electrical integration and automation. Rolls-Royce meanwhile provided the BESS for Castor.

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

Alfen also provided the BESS for SemperPower’s first project, a 9.3MW/9.9MWh system commissioned in Terneuzen in 2021.

The transmission system operator (TSO) in the Netherlands TenneT has said the country needs 9GW of new BESS by 2030 but it has lagged behind Belgium and Germany for deployments. A highly congested grid and ‘double-charging’ of BESS projects by treating them as both consumers and producers of electricity are among the main challenges.

Yves Vercammen, sales manager for Alfen, commented: “We’re especially proud that this project includes products from Alfen’s portfolio of integrated solutions, including our TheBattery Elements Energy Storage System, our Altro walk-in substation and even an Eve Double Pro-line EV charging station for site visitors to use.”

Energy-Storage.news’ publisher Solar Media will host the 9th annual Energy Storage Summit EU in London, 20-21 February 2024. This year it is moving to a larger venue, bringing together Europe’s leading investors, policymakers, developers, utilities, energy buyers and service providers all in one place. Visit the official site for more info.

Read Next

August 14, 2026
Squadron Energy has completed a refinancing of its Australian renewable energy portfolio, securing total debt commitments of more than AU$2.7 billion (US$1.76 billion).
Premium
August 13, 2026
ESN Premium learns about Hong Kong’s role as a bridge between China and the world, from energy storage solution provider RelyEZ and investment promotion agency InvestHK.
August 13, 2026
Denmark-headquartered investor Copenhagen Infrastructure Partners (CIP) has brought its 500MW, 2-hour duration Coalburn 1 battery energy storage system (BESS) into commercial operation.
August 12, 2026
Ahead of the Battery Asset Management Summit Australia 2026, we take a look at some of the key debates set to take centre stage at the event.
August 12, 2026
Australia’s grid-scale battery storage fleet set a cluster of dispatch-interval records on 11 August in the NEM.