There is a lot of wind here: As a Prokon member, you can also participate directly in the acquisition and expansion of photovoltaic systems or wind farms with a large portion of personal initiative at the Windauf eG energy cooperative. Your chance to take the energy transition into your own hands!
Members of Prokon Regenerative Energien eG have established the energy cooperative Windauf eG to actively participate in projects for renewable energies - wind and solar parks. The Windauf eG works closely with Prokon.
What does this mean for you as a Prokon member? As a Prokon member, you can make a direct contribution to climate protection by participating in Windauf.
The best part: the projects do not have to be sold to third parties but remain within the "family". Looking into the crystal ball, in the future, both cooperatives could merge if our members decide to do so, for example, after the full repayment of the Prokon bond.

You can find further information as well as the membership application form on the website of Windauf eG.
Windauf eG was founded to offer members an additional opportunity to participate in the operation of renewable energy installations while at the same time keeping projects permanently within the cooperative environment.
Its establishment was preceded by suggestions from the membership, who – particularly in light of individual project sales – expressed a desire for a more direct form of involvement in specific installations.
Alternative participation models were also considered. With Windauf eG, a deliberate decision was made in favour of an independent cooperative solution that combines participation, involvement, and economic viability.
It enables Prokon eG to transfer individual completed projects not to external investors, but to an independent cooperative within the cooperative network. This creates a dual benefit: Prokon gains entrepreneurial flexibility, while members are given the opportunity to participate directly in the operation of individual installations.
In doing so, Windauf eG complements the business model of Prokon eG without replacing or altering it.
Both are legally independent cooperatives with their own statutes, governing bodies, and member base. Contractually regulated cooperation and business relationships exist between them, but there is no corporate dependency and no controlling influence.
Prokon eG remains an integrated energy cooperative that covers almost all stages of the value chain – from project development through construction and operation to electricity marketing.
In contrast, Windauf eG is designed as an investment cooperative. It does not develop its own projects but exclusively invests in already realised installations.
It is organised in a lean structure and draws on the expertise of Prokon eG for technical and commercial services based on contractual agreements. It expands the range of cooperative participation, while Prokon continues to fulfil its role as a participatory full cooperative without change.
As part of its economic realignment, Prokon eG has aligned its business model to specifically combine project development and project operation. A key element of this model—depending on the asset, financial, and earnings situation—is the generation of revenue through the sale of completed projects.
Such revenues can only unfold their full economic impact for Prokon when projects are sold to legally independent third parties. Sales within the same corporate group would be accounted for differently and could not realise these effects in the same way.
Windauf eG is an independent cooperative that enables projects to be sold not to external investors, but within the cooperative environment. In this way, Prokon combines the necessary economic rationale of project sales with the aim of keeping installations as much as possible in the hands of its members.
The selling prices are based on market-standard valuations using recognised valuation methods.
External expert reports serve as a professional basis for the decisions of the responsible bodies within the scope of their statutory responsibilities.
Expert reports contain confidential business information that concerns both Prokon eG and its project partners. Publishing such information would disclose details relevant to competition.
Members of a cooperative have clearly regulated rights to information and participation. They receive audited and aggregated information on the financial situation – in particular through annual financial statements and within the framework of the general assembly.
Project-specific individual terms or expert reports beyond this are – as is customary in cooperatives – part of operational management and remain confidential for reasons of competition and data protection.
Personnel overlaps are generally permissible and also common within the cooperative environment.
Any potential conflict of interest is examined on a case-by-case basis, documented, and taken into account by the responsible committees. Decisions are made by the respective governing bodies; the responsibilities of the Management Board, Supervisory Board, and General Assembly are clearly separated from one another.
This ensures that each cooperative makes its decisions independently and under its own responsibility.
All relevant decisions are made in accordance
with the statutes and organisational regulations
based on contractual foundations under the supervision of the Supervisory Board of Prokon eG
as well as within the framework of statutory audits conducted by the cooperative audit association
The objective is always to safeguard the economic interests of Prokon eG and its members.
Prokon eG provides technical, commercial, and organisational services for Windauf eG. These services are contractually regulated and enable efficient use of existing structures, experience, and expertise. The revenue generated from these services strengthens Prokon eG's earnings base and contributes to supporting the financing of new projects within the cooperative environment.
No. Participation in Prokon eG and an investment in Windauf eG follow different participation approaches and objectives.
Prokon eG represents an overall entrepreneurial participation with the goal of advancing the expansion of renewable energies and climate protection as a whole. Windauf eG, on the other hand, enables targeted participation in already realised installations, with a focus on a clear and reliable return on the capital invested.
Both approaches appeal to different motivations and complement each other. Members voluntarily decide whether and in what form they wish to get involved.
Project sales to so-called "third parties" increase the liquidity and financial flexibility of Prokon eG. In addition, Prokon generates ongoing revenues from services, which contributes to economic stability.
Windauf eG is legally and economically independent and is therefore not included in the consolidation scope of Prokon eG.
Prokon does not hold a majority interest or controlling influence there. Both cooperatives prepare separate financial statements and are each subject to their own statutory audit.
Both Prokon eG and Windauf eG are subject to the statutory audit obligation by the competent cooperative association. In addition, their respective supervisory boards monitor the management.
The General Assembly is the highest governing body of Prokon eG. It decides on fundamental matters of the cooperative – particularly issues relating to the statutes, the appropriation of annual results, and the election of the Supervisory Board – and receives reports from the Management Board and the Supervisory Board.
The operational management of the cooperative lies with the Management Board. It acts within the framework of legal and statutory provisions and is accountable to the Supervisory Board and the General Assembly. This also includes the ongoing management of projects, including decisions on their sale in accordance with the existing business and financing logic.
The establishment of independent cooperatives falls outside the responsibility of the Prokon General Assembly. Windauf eG therefore remains legally independent.
A merger is not a short-term measure but a long-term option.
The Supervisory Board of Prokon eG is carefully examining possible conditions and steps. A merger would only be possible with the approval of the members of both cooperatives and based on a clear legal and economic foundation.
Whether and when a corresponding proposal will be made depends on the further development of both cooperatives.