Analysis
Rabot Energy, a Hamburg, Germany-based company formerly known as Rabot Charge, has raised a $50 million Series B led by Endeit Capital, according to Tech Funding News. Germany's DeepTech & Climate Fonds joined alongside HV, High-Tech Gruenderfonds, Bosch Ventures, CNI, Acurio Ventures and vent.io. No valuation was disclosed.
## From tariff-switching to a home battery network Founded by CEO Jan Rabe and Maximilian Both, Rabot Energy is the pair's third energy company after Wechselpilot, a tariff-switching service they launched earlier and funded with their own money before starting Rabot Charge. The company's pitch: home batteries charge when renewable energy is abundant and cheap, then discharge when it's scarce and expensive, and Rabot pools many of these batteries into a single virtual power plant that can shift load across the grid. Its Rabot Flow product, launched in June 2026, bundles a dynamic electricity tariff, a smart meter and a plug-in battery -- critically, one that requires no rooftop solar installation, which widens the potential customer base well beyond homeowners who've already made that investment.
“The company says Rabot Flow can lower average household energy costs by 15%, a specific and testable claim rather than a vague efficiency pitch.”
The company says Rabot Flow can lower average household energy costs by 15%, a specific and testable claim rather than a vague efficiency pitch. Rabot had raised roughly 4.5 million euros in pre-seed and seed funding by April 2023, followed by a 17.5 million euro Series A led by HV in January 2024 and an undisclosed Bosch Ventures investment in July 2025 -- a steady step-up pattern that this $50 million Series B continues at a much larger scale. The company employs roughly 135 people across Hamburg, Munich and Berlin as of last October.
The competitive field here is crowded and well-capitalized: Octopus Energy, Tibber, Ostrom, Kraken, 1KOMMA5deg and metiundo are all chasing some version of the same home-battery-plus-dynamic-tariff model across European energy markets. Rabot's bet is that removing the rooftop-solar requirement opens a meaningfully larger customer base than rivals targeting solar-battery bundles specifically, but it also means competing on tariff economics alone against incumbents with bigger balance sheets and, in some cases, their own generation assets.
What the announcement doesn't include is a customer count or deployed-battery figure, so the 15% savings claim and the virtual-power-plant thesis remain unverified at scale. A $50 million round buys Rabot runway to prove the model works beyond its current German footprint, not confirmation that it already has.