
Development, construction and operation of wind farms, photovoltaic systems and electrolysers in Germany and Austria
Green Planet Projects GmbH
HamburgNew on Amplifa
Energy transition service provider as a 100% subsidiary of Green Planet Energy eG
Green Planet Projects GmbH (until September 2021 Planet Energy) is a 100% subsidiary of Green Planet Energy eG, an eco-energy cooperative founded by Greenpeace in 1999 and headquartered in Hamburg. The company develops, builds and operates clean power plants with a focus on wind energy and photovoltaics; in addition, its engineers plan hydropower plants, electrolysers for converting surplus wind power into hydrogen, as well as district heating and biogas projects with biomethane upgrading. The value chain covers the entire process from GIS-based site acquisition through development, permitting (BImSchG) and financing to power plant construction and commercial as well as technical operations management. With more than 20 years of experience, the company has built 16 wind farms, three photovoltaic systems and two electrolysers; the power plant portfolio comprises around 130 MW of total capacity with investments of over 188 million euros. A particular focus lies on cooperation with citizen energy cooperatives as well as financing through public profit-participating certificates (Genussrechte) as investment assets.
- Site
- Hamburg
- Processes
- Project development of wind turbines, Development of ground-mounted photovoltaic systems, Development of electrolysers, Development of hydropower plants, Retrofitting of biogas plants for direct biomethane feed-in, Construction of biogas upgrading plants, Heat supply: district heating networks, solar thermal, heat pumps, combined heat and power plants,, Commercial operations management of power plants
- Materials
- Wind turbines (onshore), Photovoltaics (ground-mounted and rooftop), Electrolysers (PEM), Biogas upgrading and biomethane feed-in, Heat supply (district heating, heat pumps, solar thermal, CHP, biomass)
- Founded
- 2001
- Industries
- Renewable energies, Wind energy, Photovoltaics, Hydrogen/electrolysis, Biogas/biomethane, Heat supply
- 01
Site and project search (GIS potential analyses)
- 02
Project/site acquisition
- 03
Planning, permitting (BImSchG) and financing
- 04
Power plant construction and commissioning
- 05
Commercial and technical operations management
- 06
Direct marketing or supply to Green Planet Energy
Technologies and processes
Wind turbines (onshore)
Core focus of the company: development, repowering and operation of wind farms with turbines from Nordex, Vestas, Enercon, REpower and Senvion.
Photovoltaics (ground-mounted and rooftop)
Biodiversity ground-mounted systems and large rooftop systems with modules from Suntech and inverters from Huawei or SMA.
Electrolysers (PEM)
Conversion of surplus wind power into hydrogen ('wind gas') with systems from Siemens and H-TEC SYSTEMS.
Biogas upgrading and biomethane feed-in
Manufacturer-independent retrofitting of biogas plants for direct feed-in with long-term gas offtake.
Heat supply (district heating, heat pumps, solar thermal, CHP, biomass)
Climate-friendly heating concepts for municipal district heating networks and residential neighbourhoods.
Locations
Hamburg
DEHead office with project development, operations management and investor services
- GIS-based potential analyses
- Power plant construction project management
- Commercial and technical operations management
Inside the production





Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Project development of wind turbinesEngineering | – | – | – | – | Wind turbines (steel, concrete - not explicitly stated) |
| Development of ground-mounted photovoltaic systemsEngineering | – | – | – | – | Photovoltaic modules (Suntech) |
| Development of electrolysersEngineering | – | – | – | – | – |
| Development of hydropower plantsEngineering | – | – | – | – | – |
| Retrofitting of biogas plants for direct biomethane feed-inEngineering | – | – | – | – | – |
| Construction of biogas upgrading plantsEngineering | – | – | – | – | – |
| Heat supply: district heating networks, solar thermal, heat pumps, combined heat and power plants,Engineering | – | – | – | – | – |
| Commercial operations management of power plantsEngineering | – | – | – | – | – |
| Technical operations management of power plantsTesting | – | – | – | – | – |
| Power plant construction / plant construction for wind and PVAssembly | – | – | – | – | – |
18 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Wind turbines | Vestas | 7 | – | 2023 | Parndorf (AT) |
| Wind turbines | Nordex N131/3600 | 6 | Total height 164.5 m, 3.6 MW each | 2026 | Erftstadt-Erp |
| Wind turbines | Nordex | 5 | 5.7 MW each | 2026 | Bälau |
| Wind turbines | Nordex | 4 | Total capacity approx. 22,800 kW | 2025 | Uetersen |
| Wind turbines | Nordex | 5 | 3.3 MW each | 2020 | Drackenstein |
| Wind turbine | Nordex | 1 | 3.6 MW | 2019 | Frickenhofer Höhe II |
| Wind turbines | Nordex | 10 | Total capacity 24 MW | 2015 | Sailershäuser Wald |
| Wind turbines | Senvion | 2 | Total capacity 6.4 MW | 2015 | Schwanewede |
| Wind turbines | Nordex | 3 | 3 x 2.4 MW, hub height 140 m | 2013 | Tomerdingen |
| Wind turbines | REpower MM92 | 3 | 2 MW each, hub height 100 m | 2010 | Suderburg |
| Wind turbines | Enercon E 53 | 3 | 800 kW each, hub height 73 m | 2009 | Roydorf |
| Wind turbines | – | 4 | Total capacity 8,000 kW | 2009 | Ketzin |
| Wind turbines | – | 3 | 2,000 kW each, height 150 m | 2011 | Buchhain I & II |
| Ground-mounted photovoltaic system | Suntech (modules), Huawei (inverters) | ca. 12.000 | 7.2 ha, 6,500 kWp | 2022 | Roigheim |
| Rooftop photovoltaic system | Suntech (modules), SMA (inverters) | 21,132 mod | 80,000 m² roof area, 3,800 kWp | 2008 | Stuttgart |
| Rooftop-mounted photovoltaic system | – | – | 31,000 m² solar modules, 1.56 MWp | 2006 | Dasing |
| Electrolyser (proton exchange membrane) | H-TEC SYSTEMS | 1 | 1,000 kW | 2020 | Haurup |
| Electrolyser (polymer electrolyte membrane) | Siemens AG | 1 | 1,250 kW | 2016 | Haßfurt |
Additional services
Reference customers
History
- 1999
Greenpeace founds the eco-energy cooperative Greenpeace Energy eG (today Green Planet Energy eG), parent company of Green Planet Projects
- 2001
Founding of the subsidiary Planet energy GmbH
- 2006
Commissioning of the Dasing PV system (1.5 MW) and the Soltau wind farm
- 2008
Commissioning of the Stuttgart Trade Fair rooftop PV system (3.8 MWp, 16 million euros)
- 2009
Investment assets 'Clean Power Plants' via profit-participating certificates; wind farms Ketzin and Roydorf
- 2010
Wind farms Suderburg and Langenbrügge commissioned
- 2011
Wind farms Buchhain I & II and first repowering in Wundersleben
- 2013
Tomerdingen wind farm commissioned
- 2015
Wind farms Sailershäuser Wald and Schwanewede commissioned
- 2016
Haßfurt electrolyser commissioned; Frickenhofer Höhe wind farm
- 2019
Expansion of Frickenhofer Höhe II wind farm
- 2020
Drackenstein wind farm and Haurup electrolyser commissioned
- 2021
Renaming of Planet Energy to Green Planet Projects (September)
- 2022
Commissioning of the Roigheim ground-mounted photovoltaic system (6.5 MW)
- 2023
Repowering of Parndorf wind farm: 13 old turbines replaced by 7 new ones, commissioned in early 2023
- 2025
Commissioning of Uetersen repowering (four new turbines, approx. 22.800 kW); Bälau wind farm commissioned
- 2026
Commissioning of Erftstadt-Erp wind farm planned (6 Nordex N131/3600, 21.6 MW)