Ostrom Raises €20M Series B for Smart Energy Platform
Ostrom offers full transparency and control over household electricity with a flat monthly fee and electricity-at-cost - © Ostrom
Berlin-based digital energy provider Ostrom has closed a €20 million Series B funding round led by Eneco Ventures, bringing the company's total funding to over €40 million. The investment will fuel nationwide expansion and accelerate the development of Germany's largest electric vehicle Virtual Power Plant.
According to the company's press release, Eneco Ventures, the venture capital arm of Dutch sustainable energy leader Eneco, led the round with participation from returning investors including SE Ventures, Union Square Ventures, and 468 Capital.
Founded in 2021, Ostrom has positioned itself as a disruptor in Germany's energy market by offering transparent, monthly cancellable contracts with 100% certified green electricity. The certified B Corp has built a reputation for its digital-first customer experience and innovative pricing models.
The funding comes after a standout 2024 for Ostrom, which saw the company triple its customer base while launching its groundbreaking Virtual Power Plant technology. The platform connects household devices and electric vehicle batteries to intelligently balance the grid and maximize renewable energy use.
"Ostrom is a true pioneer in unlocking residential flexibility — delivering real value to consumers, accelerating the adoption of renewable energy, and strengthening grid stability," said Jan van der Velde, Investment Director at Eneco Ventures, in the press release.
The fresh capital will enable Ostrom to subsidize smart meters for customers nationwide, strengthening its position in automation technology. The company's AI investment already resolves over half of customer operations automatically, supporting its lean team structure.
Co-Founder and CEO Matthias Martensen emphasized the strategic value of the partnership: "This Series B funding represents more than just capital — it's about strategic partnership while maintaining full independence as we drive the transformation of the energy market."
The company plans to rapidly expand its NeoGrid™ Virtual Power Plant while maintaining focus on medium-term profitability.
