Top 80 Green Energy startups in Germany

Sep 28, 2025 | By Alexander Gillet

1
Funding: €3.5B
Enpal is a photovoltaics leasing firm that provides solar power systems for homeowners with no money upfront.
2
Funding: €918M
SunFire provides liquid fuels and combustibles. It offers petrol and diesel from carbon dioxide and water by coupling renewable energy, as well as kerosene, waxes, methanol, and methane/synthetic natural gas. The company also allows storage of renewable electrical power in liquid fuels with storage, loading, and transport capabilities.
3
Funding: €652M
1Komma5° is aiming to offer households everything needed for a carbon neutral home, including energy storage, charging infrastructure for electric vehicles and solar.
4
Funding: €259M
ZOLAR is an online provider of solar systems enables the entry into the private energy supply for private households.
5
Funding: $250.1M
Tado° offers smart thermostats and apps that adjusts to the real-time behavior of residents in private homes and small businesses.
6
Funding: €207.5M
ENVIRIA offers companies easy and safe access to scalable energy-as-a-service solutions and the renewable energy ecosystem.
7
Funding: €208M
INERATEC provides sustainable fuels, gas-to-liquid, power-to-gas, and power-to-liquid application products.
8
Funding: €181.5M
Proxima Fusion creates new types of power plants using stellarators that optimised to create magnetic cages for high-energy particles.
9
Funding: €165.3M
Its innovative approach to fusion energy sets Marvel Fusion apart from its competitors. Instead of relying on temperature to reach fusion conditions, Marvel Fusion uses particle acceleration, making the approach much more efficient than conventional thermal approaches to fusion.
10
Funding: $169.2M
Sonnen is a German-based pioneer for intelligent lithium based energy storage. The sonnenBatterie is not just a battery, it's an intelligent storage system that automatically adjusts the energy usage in your household. In combination with solar panels the sonnenBatterie will enable you to supply yourself with clean energy – thus making you independent and protecting you from energy price hikes.
11
Funding: €150M
Jolt provides ultra-fast high-power electric car chargers
12
Funding: €124.9M
instagrid is a provider of portable battery storage to easily create mobile power infrastructures.
13
Funding: €78.9M
ecoworks uses industrial prefabrication, digital processes, and energy systems to modernise multi-family houses with up to four floors within a few weeks. During the renovation process, the building is converted into “a small, decentralised power plant” by installing photovoltaic systems, heat pumps and thermal reservoirs.
14
Funding: €74M
Reverion produces highly efficient, reversible, carbon-negative power plants. In their process, excess generation from wind turbines and photovoltaics is converted into synthetic methane by electrolysis and can be stored. If needed, the same system can use the stored methane to generate an energy supply.
15
Funding: $74.4M
Twaice is the new analytics platform for Battery Data. The company build virtual battery models and constantly collect data with smart control units. This platform provides all battery data in one place, offer on-demand reports, and predictive diagnostics. This indeed simplifies battery testing, improve lifetime and prevent downtimes.
16
Funding: €68.8M
VoltStorage is an electric storage device that can store clean solar power during the day to power your home at night. It will save you a lot of money, protect the environment and help to stabilize the grid.
17
Funding: €67M
Hydrogenious Technologies develops innovative solutions for safe and efficient hydrogen storage in liquid organic hydrogen carriers.
18
Funding: $69.4M
Spot My Energy increases the value of smart power by making energy flows transparent.
19
MAN Energy Solutions enables its customers to achieve sustainable value creation in the transition towards a carbon neutral future.
20
Funding: $45.7M
Ostrom is an energy management platform that makes green electricity affordable and straightforward for households in Germany and Europe.
Editor: Alexander Gillet
Alexander Gillet is a senior editor for EnergyStartups. He has a deep background in energy sector and startups. Alexander graduated from Emlyon Business School, a leading French business school specialized in entrepreneurship. He has helped several non-profit organizations dedicated to promoting environmental education and sustainability and has written over 250 articles on energy technology for various websites. In his free time, Alexander enjoys yoga, camping and exploring the Blue Ridge Mountains. You can contact Alexander at alexgillet(at)energystartups(dot)com