In Germany, the legal framework for the organisation of an energy community depends on the size and the sector of the project to be implemented. The most common legal frameworks for energy communities in Germany are cooperatives (“Genossenschaften”), limited liability companies (GmbH/UG & Co. KG), and private corporations (“Gesellschaft bürgerlichen Rechts”).
Cooperatives are the most frequent organisational form of renewable energy communities in Germany (around 55%) and produce 3.5% of the renewable energy of the country (DGRV, 2021). Since 2006, 896 energy cooperatives have been founded in Germany. 95% of their members are private individuals, they furthermore include banks, farmers, as well as municipalities, public institutions, and churches. The minimum amount of investment of the members differs among the energy cooperatives, on average it is €560. This rather low amount allows different income groups to participate. Most energy cooperatives (“Genossenschaften”) are engaged in solar energy production (80%), but they are also active in the field of electricity distribution (36%) and wind energy production (30%) (DGRV, 2021).
In general, cooperatives are a very established legal structure in Germany and have been used for the organisation of (then fossil) electricity supply in rural areas since the early 20th century (Holstenkamp & Müller, 2013). The long tradition of cooperatives leads to a clear and well-developed legislation, which facilitates the foundation of cooperatives, and ensures a high acceptance in society. The low rate of bankruptcy among cooperatives furthermore increases the attractiveness of the model. Yet, more bankruptcies can be observed since 2009 due to external factors, such as changing economic forecasts, or projects that do not unfold as planned (Kahla et al, 2017).
According to the interviewees, there are two important approaches of cooperatives that ensure long-time market participation and stability: First, some cooperatives offer important services for their members and act as social entrepreneurs (e.g., "regionalwerke"). Second, cooperation with established, larger energy suppliers offers guarantees for stability (e.g., BürgerEnergie Berlin with Elektrizitätswerke Schönau).
Energy communities focussing on wind energy production are often organised in the legal form of limited liability companies (GmbH, UG, GmbH & Co. KG) as the construction of wind parks requires more capital. These companies can be regarded as citizen energy communities if the limited partners (“Kommanditisten”) are private citizens.
For small projects, energy communities are often organised in the legal form of private corporations (“Gesellschaft bürgerlichen Rechts”), which are rather simple to register and found, yet yield the risk that members are liable with their personal assets.
There are differences in the scope of (financial) participation in the forms of energy communities in Germany: While energy communities organised on the municipality level (e.g., “regionalwerke”) ensure participation of all citizens, renewable energy communities organised as cooperatives or limited liability companies (GmbH & Co. KG) require often larger investments and hence, are not by design open for all income levels. Therefore, some of the interviewees deemed it important to ensure burden sharing and participation of different income groups to guarantee equal opportunities to participate. The organisational form of cooperatives furthermore ensures equal voting rights independently of the financial contribution to the project, whereas in limited liability companies the shareholders’ votes are weighted by their investments (Ahlemeyer et al, 2022.
Since 2013 there is a shift in the predominant legal form of the energy communities from cooperatives to limited liability companies. While the foundation of cooperatives is decreasing, limited liability companies have increasingly been established. This change is driven by the predominant electricity generation technology. While between 2009 and 2012 the focus lay mostly on electricity production via photovoltaic and was mainly implemented by cooperatives, wind projects have increasingly been set up in form of limited liability companies since 2013. This is also due to changes in the EEG law (Kahla et al, 2017).
Furthermore, there are differences in the frequency of the legal forms of energy communities between urban and rural areas: While in rural areas energy communities are often organised as cooperatives, in cities the legal form of private corporations is more often chosen, as the projects are mainly on a smaller scale.
The predominant business field of energy communities in Germany is electricity energy production (86%). Also, around 100 communities operate their own grid (e.g., bioenergy villages (Bioenergiedörfer) and around 150 operate grids and distribute heat and electricity but do not produce electricity. A minority of the energy communities distribute electricity or heat without operating their own grid (Ahlemeyer et al 2022).