London-based Axle Energy, a virtual power plant software company, has raised $25 million (about €21 million, or roughly £20 million) in a Series A round led by Energize Capital to expand its distributed energy platform across the United Kingdom and into continental Europe. The financing, announced in July 2026, will fund software engineering and deepen partnerships as the company connects more home batteries, electric vehicle chargers and heat pumps to wholesale electricity markets. Axle already coordinates more than 300,000 connected devices representing over 2 GW of flexible capacity, a portfolio it likens to the output of a large nuclear reactor.
Energize Capital Anchors A Round Backed By Every Existing Institutional Investor
The round was led by Energize Capital, a US-based investor focused on energy and industrial software, with participation from returning backers Accel, Picus Capital and Eka Ventures. The continued support from all prior institutional investors signals confidence in the company’s traction rather than a distressed or bridge raise.
As part of the deal, Energize partner Tyler Lancaster joins Axle’s board, and Agustina Soriano-Sergi joins as a board observer, according to Energize Capital. Lancaster framed the investment as a bet on the virtual power plant category maturing into a scalable, global model for relieving grid strain.
How Axle Converts Idle Home Devices Into Dispatchable Capacity
Axle operates as an infrastructure layer that lets device manufacturers, energy suppliers and fleet operators plug distributed assets into electricity markets through a single API. When power is abundant, connected devices can charge or increase consumption, and when the grid is stressed, they can curtail demand or discharge stored energy, according to Accel’s investment note.
The platform handles the full commercial chain, from connecting assets and forecasting their availability to aggregating them, bidding into markets, dispatching them during grid events and settling payments. Axle then shares the resulting revenue with the manufacturers and consumers whose devices provide the flexibility. The company launched its consumer-facing virtual power plant in late 2024 and now works with inverter brands including Fox ESS, GivEnergy, SolaX and Solis, alongside charging partners such as Pod Point.
Two Gigawatts Under Management, With A 375 GW Addressable Target
Axle says it has delivered hundreds of gigawatt-hours of flexibility to date, and that participating households earn around £10 a month on average, collectively earning millions of pounds over the past year. For scale, the company’s 2 GW of managed capacity compares against average UK electricity demand of about 30.7 GW over the past year, as reported by the National Grid.
The company estimates roughly 75 million eligible energy assets exist across Europe and the United States, representing around 375 GW of latent capacity. Converting that theoretical pool into contracted, dispatchable flexibility will require adoption far beyond Axle’s current footprint, a caveat worth weighing against the headline figure.
Founders Pair Energy-Retail Experience With Data Science
Axle was founded in 2023 by chief executive Karl Bach and chief technology officer Archy de Berker, who met through London’s energy sector. Bach previously worked in energy retail, reported by UKTN as a former Bulb executive, while de Berker, based in Bristol, previously led product and analytics at supply-chain emissions firm Carbon Chain.
The Series A follows earlier raises documented by EU-Startups, including a €1.5 million pre-seed round in 2023 and an €8.3 million seed round in 2024.
AI-Driven Load Growth Reframes Flexibility As Grid Infrastructure
The raise lands as electrification of heat and transport, the data-centre buildout tied to artificial intelligence, and a rising share of variable wind and solar generation all push power systems toward higher and less predictable demand. Utilities facing that strain often turn to capital-heavy network expansion, gas-fired peaking plants or renewable curtailment, each of which carries cost, emissions or timeline penalties.
The economic argument for aggregating existing devices is well documented: an analysis by The Brattle Group has estimated that virtual power plants can deliver capacity at a net cost roughly 40% below that of a gas peaker plant. Axle’s founders position their platform as a way to add capacity in weeks rather than the years required to permit and build new generation.
“Millions of EV chargers, home batteries and heat pumps already contain flexible capacity,” said Karl Bach, chief executive and co-founder of Axle Energy, in the company’s July 2026 funding announcement. Bach added that most of that capacity currently sits unused, and that coordinating it lowers the cost of balancing the grid while making better use of infrastructure that already exists.
A Crowded European Flexibility Market Draws Fresh Capital
Axle enters a European flexibility landscape that has attracted steady investment and consolidation. Antwerp-based LIFEPOWR closed a €5.65 million growth round to scale its distributed-energy and VPP software across Europe, part of a broader wave of aggregation and flexibility platforms raising capital, as reported by Kurrant.
Larger players are scaling through acquisition rather than organic growth alone. Octopus Energy’s move to acquire a majority stake in US flexibility platform Uplight, which manages 8.5 GW of flexible load, illustrates both the scale incumbents can reach and the competitive ceiling Axle will eventually face as it expands internationally.
What The Capital Buys: European Expansion And Deeper OEM Ties
The proceeds will support geographic expansion beyond the UK into new European energy markets, alongside continued investment in core software and a growing cross-border team. Axle also plans to deepen partnerships with original equipment manufacturers, utilities and fleet operators, the channels through which it acquires connected assets at scale.
The strategic question ahead is execution across fragmented national market rules, where balancing mechanisms, settlement processes and consumer participation frameworks differ sharply between countries. Axle’s ability to replicate its UK model in those markets, rather than the size of the addressable asset pool, is likely to determine how much of the opportunity it captures.
