Rabot Energy Raises €50M ($58M) Funding to Turn Home Batteries Into a Virtual Power Plant

Rabot Energy, the Hamburg-based digital energy provider turning household batteries into grid-balancing assets, has raised €50 million ($58 million) in Series B funding led by Endeit Capital and the DeepTech & Climate Fonds (DTCF), with participation from existing investors including HV Capital, High-Tech Gründerfonds, Bosch Ventures, CNI, Acurio Ventures, and vent.io .

The round brings Rabot’s total disclosed funding to approximately €50 million ($58 million), following a €17.5 million Series A in January 2024 and a €4.5 million pre-seed/seed round in April 2023 . The company did not disclose its valuation.

The funding comes as Rabot surpasses 200,000 customers and reports €200 million in revenue, having supplied over 600 million kilowatt-hours of renewable electricity. The company plans to reach one million customers and connect additional devices—home batteries, EV chargers, and heat pumps—into a coordinated virtual power plant .

Rabot Energy Funding Overview By CREDX Media

Startup Name	Rabot Energy (formerly Rabot Charge)
Founders	Jan Rabe (CEO), Maximilian Both
Founded	2021
HQ	Hamburg, Germany
Round	Series B Funding
Amount Raised	€50M ($58M)
Valuation	Not disclosed
Category	Energy Tech, Virtual Power Plants, Dynamic Tariffs
Lead Investors	Endeit Capital, DeepTech & Climate Fonds (DTCF)
Returning Investors	HV Capital, High-Tech Gründerfonds, Bosch Ventures, CNI, Acurio Ventures, vent.io
Total Funding Raised	~€50M ($58M)
Employees	135
Customers	200,000+ (including 15,000 business clients)
Revenue	€200M
Key Product	Rabot Flow (dynamic tariff + smart meter + plug-in battery)

💡 Use of Funds

• Customer Growth: Targeting one million customers .
• Device Integration: Connecting home batteries, EV chargers, and heat pumps into the virtual power plant .
• Platform Development: Expanding the proprietary technology platform for residential, commercial, and industrial customers .

Startup Overview: Rabot Energy

What Rabot Is Building in Simple Words

Rabot Energy has built a platform that connects home energy devices—batteries, EV chargers, heat pumps—into a coordinated virtual power plant. The system charges batteries when renewable energy is abundant and electricity prices are low, then discharges when supply tightens. Households save money; the grid gains flexibility .

• Dynamic Electricity Tariffs: Rabot buys electricity on the day-ahead and intraday markets and passes the wholesale price directly to customers, who shift consumption to cheaper, cleaner hours .
• Rabot Flow: Launched in June 2026, this integrated product combines a dynamic tariff, a smart meter, and a plug-and-play battery that installs in minutes and doesn’t require rooftop solar—making it accessible to renters .
• 15% Average Savings: Rabot claims its system lowers average household energy costs by 15% .
• Virtual Power Plant: By aggregating thousands of distributed batteries and controllable devices, Rabot creates a coordinated resource that can help stabilize the grid .
• Proven Scale: 200,000 customers, €200 million revenue, and 600+ million kWh of renewable electricity supplied .

Why Rabot Energy Matters

1. The Grid Needs Flexibility, Not Just Generation As renewable energy grows, the timing of consumption matters as much as the amount generated. Rabot’s CEO Jan Rabe frames the shift: “The next generation of power plants will not be built; it will be connected. Millions of households have enormous untapped potential to do more than simply consume energy and instead become an active part of the wider energy system” .
2. Home Batteries Are Sitting Idle Millions of household batteries could provide grid services, but most are installed alongside solar and left to charge and discharge passively. Rabot’s platform unlocks their potential by connecting them into a coordinated VPP .
3. The VPP Market Is Growing Rapidly The global virtual power plant market is projected to reach **$6.7 billion in 2026**, growing at over 20% annually toward $8.68 billion by 2030 .
4. Proven Traction Validates the Model From 35,000 customers at its Series A in January 2024 to 200,000 now, Rabot has demonstrated that dynamic tariffs plus intelligent device management drive adoption . The company also reports that customers saved €45 million in 2025 compared to default supplier tariffs .

Startup Story: From Tariff Switching to Building a Virtual Power Plant

Rabot Energy didn’t start as a VPP company. It started as a tariff-switching service.

Before founding Rabot, Jan Rabe studied physics in Munich, worked in finance and energy trading in Switzerland, and earned a master’s in sustainable development in Madrid. He and Maximilian Both first launched Wechselpilot, a service helping customers switch electricity tariffs .

When energy prices spiked in late 2021, the switching business suffered. But Rabe and Both saw a bigger opportunity: if they could buy electricity directly on wholesale markets and pass savings to customers, they could build a more resilient business. Rabot Charge—now Rabot Energy—was born .

The company raised outside funding in stages. By April 2023, it had secured €4.5 million in pre-seed and seed rounds. HV led a €17.5 million Series A in January 2024. Bosch Ventures joined in July 2025 for an undisclosed amount .

The strategic pivot came with Rabot Flow in June 2026. By combining a dynamic tariff, a smart meter, and a plug-and-play battery, Rabot moved from selling electricity to selling an integrated energy system—one that could participate in grid balancing. The battery is delivered in three days, plugs into a regular socket, and activates in the app in under two minutes. No rooftop solar required .

By October 2026, Rabot had grown to 135 employees, surpassed 200,000 customers, and reached €200 million in revenue. The €50 million Series B now funds the next phase: scaling to one million customers and connecting more devices into the virtual power plant .

Our Take on Rabot Energy

Rabot is solving the least glamorous problem in energy—demand-side flexibility—and that’s precisely why it matters.

The energy transition has focused on building more renewables. But as wind and solar grow, the challenge shifts from generation to timing: how do you consume clean energy when it’s available and avoid stressing the grid when it’s not? Rabot’s insight is that the answer already exists in millions of homes—batteries, EV chargers, heat pumps—if only someone connected them intelligently .

The €50 million Series B is justified on multiple fronts: 200,000 customers, €200 million revenue, a product that doesn’t require solar ownership, and a clear path to VPP participation. Endeit’s leadership signals conviction in the category: the firm has made climate tech a focus and sees flexibility as a cornerstone of the energy transition .

The real risk is smart meter availability. Rabot’s dynamic tariff works best with smart meters, but only 5.9% of German metering points are smart—a bottleneck that led Rabot, Octopus Energy, Tibber, and Ostrom to launch the Smart Meter Initiative in 2024 to accelerate installations . Rabot offers a workaround for customers without smart meters (manual monthly readings via the app), but the full value of automated flexibility requires broader smart meter adoption.

For now, Rabot has capital, customers, and a clear thesis: the next power plant isn’t built—it’s connected.

Founder Background: The Physicist Who Built Three Energy Companies

Jan Rabe (CEO) studied physics in Munich, worked in finance and energy trading in Switzerland, and earned a master’s in sustainable development in Madrid. He co-founded Wechselpilot with Maximilian Both, then pivoted to Rabot Charge (now Rabot Energy) as their third energy venture .

Maximilian Both co-founded Rabot and serves on the board. He and Rabe built Wechselpilot together before launching Rabot .

The founding team’s combination—Rabe’s energy trading background and Both’s operational partnership—positioned Rabot to navigate both the commercial and technical challenges of dynamic tariffs and VPP aggregation.

The Virtual Power Plant Race Nobody Expected

Rabot operates in a market with international competitors including Tibber (Norway) and Octopus Energy (UK), as well as German players like Ostrom. One investor noted that “even with a view to the competitive environment with international providers like Tibber and Octopus, Rabot Energy is optimally positioned—with a modern, scalable product, a technologically superior approach, and a visionary team” .

Rabot’s differentiation is its integrated hardware-plus-software model. Rabot Flow bundles a battery with the tariff and app, creating a closed-loop system that can participate in VPP markets. Competitors that sell only tariffs lack the device layer; competitors that sell only batteries lack the energy trading platform .

The competitive moat, if it materializes, is device density and grid service revenue. The more batteries Rabot installs, the more capacity its VPP controls. The more capacity it controls, the more revenue it can generate from grid services—revenue that can subsidize customer acquisition .

Founder Intelligence: What Founders Can Learn from Rabot Energy

• Pivot when the market shifts: Wechselpilot’s tariff-switching business suffered when prices spiked. Rabe pivoted to selling electricity directly—a better business in a volatile market.
• Sell the system, not the component: Rabot Flow bundles tariff, meter, and battery into one product. Customers don’t buy electricity or hardware; they buy savings and simplicity.
• Make it accessible to renters: By removing the rooftop solar requirement, Rabot opened its market to renters—a segment most home energy companies ignore.
• Scale customer acquisition with proven savings: 200,000 customers and €45 million in claimed customer savings create organic growth and credibility.

Investor Intelligence: Why This Round Gets Premium Capital

Endeit Capital led the round. Sara Resvik, Partner at Endeit, framed the thesis: “The energy transition in Germany is reaching a point where flexibility is becoming just as important as expanding renewable energy. Rabot is creating the conditions to actively involve millions of households: they help stabilise the power grid while benefiting from the flexibility they provide. Jan Rabe and his team have built a profitable core business and developed the technology to intelligently manage electricity demand at scale” .

The DeepTech & Climate Fonds (DTCF) co-led, with Dr Anne Hinze noting: “Rabot Energy is addressing a key challenge of the energy transition: with innovative energy tariffs and an intelligent energy management platform, the company enables households to benefit from the dynamics of an increasingly volatile energy market” .

Bosch Ventures returned after investing in July 2025, signaling continued corporate conviction in Rabot’s device integration strategy .

The Road Ahead for Rabot Energy

Expansion Targets

With €50 million in capital, Rabot will:

• Scale from 200,000 to one million customers
• Connect more home batteries, EV chargers, and heat pumps into the VPP
• Expand services for residential, commercial, and industrial customers in Germany
• Continue developing Rabot Flow and the underlying technology platform

Competitive Response

Expect:

• Tibber and Octopus Energy to deepen device integration in Germany
• Traditional utilities to launch competing dynamic tariff and VPP offerings
• New startups targeting specific device categories or grid services
• Rabot’s moat: integrated hardware-software model + proven customer scale + battery-at-cost strategy

Conclusion

Rabot Energy’s €50 million Series B funding validates the thesis that home batteries can become grid assets. The company’s 200,000 customers, €200 million revenue, and Rabot Flow product position it as a leader in Germany’s emerging virtual power plant market.

Market tailwinds favor Rabot: Germany’s energy transition requires flexibility, the VPP market is growing at over 20% annually, and millions of household devices remain unconnected. The company’s integrated model and proven traction position it to scale as dynamic tariffs and VPP participation become standard.

For deep analysis of energy tech funding, VPP innovation, and companies reshaping the grid, explore CREDX Media for comprehensive coverage of startup funding trends, valuation intelligence, and founder playbooks.

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Frequently Asked Questions

1. What is Rabot Energy’s total funding and latest round size?
Rabot Energy has raised approximately €50 million ($58 million) total. Its Series B was led by Endeit Capital and DTCF in October 2026 .

2. How much did Rabot Energy raise in its Series B round and who led the investment?
Rabot raised €50 million ($58 million) led by Endeit Capital and DeepTech & Climate Fonds, with participation from HV Capital, High-Tech Gründerfonds, Bosch Ventures, CNI, Acurio Ventures, and vent.io .

3. What is the valuation of Rabot Energy?
Rabot did not disclose its post-money valuation. The company has raised approximately €50 million in total disclosed funding .

4. Who are the major investors in Rabot Energy?
Major investors include Endeit Capital (lead), DeepTech & Climate Fonds (co-lead), HV Capital, High-Tech Gründerfonds, Bosch Ventures, CNI, Acurio Ventures, and vent.io .

5. Who are Rabot Energy’s founders?
Rabot Energy was founded in 2021 by Jan Rabe (CEO) and Maximilian Both. They previously built Wechselpilot, a tariff-switching service .

6. What is Rabot Energy’s business model?
Rabot sells dynamic electricity tariffs and Rabot Flow—an integrated product combining a tariff, smart meter, and plug-and-play battery. The company aggregates connected devices into a virtual power plant .

7. How does Rabot Energy’s virtual power plant work?
Batteries charge when renewable energy is abundant and prices are low, then discharge when supply tightens. Thousands of connected devices are coordinated to provide grid flexibility .

8. What traction justifies Rabot Energy’s Series B funding?
Rabot has 200,000+ customers, reports €200 million in revenue, and has supplied over 600 million kWh of renewable electricity. Customers saved €45 million in 2025 vs. default tariffs, per company figures .

9. What are Rabot Energy’s plans for the €50 million Series B capital?
Rabot will scale to one million customers, connect more batteries, EV chargers, and heat pumps, and expand its technology platform for residential, commercial, and industrial customers .

10. What is Rabot Flow and how does it work?
Rabot Flow combines a dynamic electricity tariff, a smart meter, and a plug-and-play home battery. The battery plugs into a standard socket, activates in the app in under two minutes, and doesn’t require rooftop solar .

11. Who is the CEO of Rabot Energy?
Jan Rabe serves as CEO and co-founder. He studied physics in Munich, worked in energy trading in Switzerland, and earned a master’s in sustainable development in Madrid.