Rabot Energy Secures $50 Million Series B for Virtual Power Plant

Rabot Energy has raised $50 million in a Series B funding round. The financing was led by Endeit Capital and Germany’s DeepTech & Climate Fonds, with participation from existing investors HV Capital, High-Tech Gründerfonds, Bosch Ventures, CNI, Acurio Ventures, and vent.io.

The climate tech startup will use the capital to accelerate its virtual power plant strategy and expand its customer base toward a goal of one million users. The company has grown to more than 200,000 customers and reached €200 million in revenue over the past three and a half years.

Product and technology

Central to the company's model is Rabot Flow, a product launched in June 2026. It combines a dynamic electricity tariff, a smart meter, and a plug-and-play home battery. The system is designed to lower household energy costs by shifting consumption to cheaper periods when renewable generation is high.

The Rabot Flow battery plugs into a standard wall socket. It requires no rooftop solar installation and can be used by renters. The company states the battery can be delivered in three days and set up via a mobile app in under two minutes. Customers can also use the dynamic tariff without a smart meter by entering monthly readings manually in the app.

Virtual power plant strategy

Rabot Energy is developing a virtual power plant that aggregates connected home batteries. The system coordinates storage and consumption across households to support grid flexibility. Batteries charge when renewable energy is abundant and discharge during times of scarcity.

The company plans to connect additional energy devices to increase this flexibility. Future integrations will include electric vehicle chargers and heat pumps. This approach aims to manage consumption as transport and heating become more electrified.

Growth and market traction

Rabot Energy's customer base has expanded rapidly from 35,000 in January 2024 to over 200,000 today. Of these, approximately 15,000 are commercial and industrial clients. The company passed 100,000 customers when Bosch Ventures invested in July 2025.

The startup has supplied over 600 million kilowatt-hours of renewable electricity. According to the company, its customers saved €45 million in 2025 compared to default supplier tariffs. Rabot Flow can reduce average household energy costs by 15 per cent.

As of October 2025, the Hamburg-based firm employed about 135 people across offices in Hamburg, Munich, and Berlin. At that time, it was aiming for over €100 million in revenue for 2025 and more than 300,000 customers by the end of 2026. Founder Jan Rabe studied physics in Munich before launching the venture.

With the new Series B funding, Rabot Energy plans to expand its offerings for residential, commercial, and industrial customers across Germany. It will also further develop its proprietary technology platform.