Axle Energy raises €21M Series A to orchestrate distributed energy assets as virtual power plants

Axle Energy, a London-based energy flexibility startup founded in 2023 by Karl Bach (CEO), has raised €21 million ($25 million) in a Series A led by Energize Capital, with participation from Accel, Picus Capital, and Eka Ventures. The round funds international expansion of Axle's platform for aggregating distributed energy assets into virtual power plants.

The hidden grid problem

The electricity grid is under a stress it was not designed to handle. Two forces are pulling demand upward simultaneously and unpredictably: AI data centres, whose compute-driven power draw can surge and flatten in ways that no traditional load forecasting model anticipated; and electrification — electric vehicles, heat pumps, and industrial electrification — which is adding millions of distributed devices to a grid that was built for large, centralised, predictable consumers.

"Energy security is no longer just about where our energy comes from," Bach said. "AI and electrification are increasing electricity demand at a pace that power systems were not designed for."

The answer that Axle Energy is building is not on the generation side. It is on the flexibility side: aggregating the latent flexibility embedded in already-deployed distributed assets — EV batteries, home batteries, heat pumps — into a virtual power plant that can be dispatched by grid operators and utilities in real time.

The virtual power plant model

Axle connects distributed energy assets through partnerships with OEMs (EV manufacturers, heat pump makers), utilities, and fleet operators. The aggregated portfolio can respond to grid signals — charging when there is surplus renewable power and discharging or curtailing load when the grid is tight. The commercial model runs on the value of that flexibility, shared between Axle, its partners, and asset owners.

Zhenya Loginov, partner at Accel, described the context: "As AI, electrification and renewable energy accelerate, power systems are becoming more dynamic and more complex." Accel's participation is notable — the firm is not a specialist climate investor, but a general software investor that has concluded the virtual power plant market is large enough and software-driven enough to justify a position.

Energize Capital, which leads the round, is a specialist: the fund backs companies at the intersection of energy and technology and has built a portfolio of companies addressing exactly the infrastructure gaps that electrification is creating.

From UK to European grids

The Series A funds expansion beyond the UK into international markets — European grids face the same structural challenge, and the regulatory frameworks for demand-side flexibility (Balancing Mechanism, intraday markets, flexibility procurement) are evolving in ways that create commercial opportunity.

The OEM partnership model is the strategic bet: embedding Axle's software directly into devices at the point of manufacture, rather than retrofitting it after. If that model works, the asset acquisition problem solves itself as device shipments grow.