The Anonymous Widower

Centrica And Return Partner To Scale Battery Flexibility In Germany

The title of this post, is the same as that of this press release from Centrica.

This is the sub-heading.

Centrica Energy and Return have signed long-term Virtual Tolling agreement for 100 MW / 400 MWh of battery storage flexibility in Germany. The contracted capacity is not tied to one dedicated battery project. Instead, it is provided through Return’s Virtual Flexibility Portfolio (VFP), bringing together capacity from Return-owned battery storage assets across Germany

These two paragraphs add more details.

The structure gives Centrica access to Return’s virtual flexibility portfolio, creating greater diversification and resilience, while the underlying capacity remains backed by physical battery energy storage systems (BESS). Rather than relying on one dedicated asset, capacity can be provided from across Return’s broader German battery portfolio.

The deal marks a new partnership between the two companies and brings together complementary strengths: Return provides the physical battery assets and operational expertise, while optimisation will rely on Centrica Energy’s established multi-market optimisation service, with participation across Wholesale Markets and Ancillary Services in Germany to commercialise the flexibility in the market.

It should be noted that this is the third major battery project, where Centrica are optimising a battery in Europe. The others were in Sweden and Finland.

I suspect that Centrica do a good job, when they are asked.

Are Centrica Good At Optimising Grid Batteries?

I asked Google AI this question and received this reply.

Yes, Centrica is considered a strong and established player in grid battery (BESS) optimisation.

Centrica Energy leverages over 15 years of flexible asset trading experience and has actively optimised battery energy storage systems since 2018. They currently manage over 950 MW of grid-scale batteries on contract across the UK and Europe.

 Key Strengths in Optimisation

Portfolio Diversification: Unlike smaller or newer software-only optimisers, Centrica balances battery risk alongside a diverse portfolio of renewables, thermal plants, and gas peakers.

Large balance sheets allow them to offer robust financial backing and revenue security (such as multi-year fixed-payment structures) to asset developers.

 Verified Performance: Their Centrica Energy BESS Optimisation results—such as strong gross value capture in markets like Belgium—have undergone independent agreed-upon procedures by Deloitte.

Advanced Forecasting: They use proprietary algorithms, meteorology data, and machine learning models to trade dynamically across wholesale, balancing, and ancillary service markets.

They seem to have got all the issues comprehensively covered.

 

September 21, 2026 - Posted by AnonW | Artificial Intelligence, Energy | Battery Optimisation, Belgium, Centrica, Finland, Germany, Google AI, Sweden