New subscription phase for Windauf eG

Prokon eG has decided to offer the two wind farms Langwieden and Blumberg for sale to our sister cooperative, Windauf eG. In doing so, we aim to ensure that these proven projects remain in the hands of members in the future – while at the same time strengthening Prokon’s capacity to act.

It is now up to the members: the purchase of the two wind farms by Windauf will only succeed if the members decisively subscribe to shares up to the available subscription volume during this subscription phase, thereby laying the foundation for the acquisition.

Here's how it works – in 3 easy steps

Einloggen in Ihr Benutzerkonto unter www.windauf.de oder neuen Account anlegen.

Subscribe to additional shares

Your request for an increase will be transmitted digitally and automatically to Windauf eG.

Transfer amount

"After the subscription period ends and your application is accepted (expected in December), transfer the amount – done!"

Prokon solves strategic challenges

The year 2025 presents significant challenges for Prokon – as it does for the entire industry:

Weak wind year: Spring 2025 recorded the lowest wind levels in decades. This alone results in revenue losses of approximately €5–6 million for Prokon.
Declining project development revenues: Fees for approved projects have dropped sharply due to oversubscribed EEG tenders.
Rising costs: Higher lease payments, more expensive grid connections, increased turbine prices and interest rates are putting pressure on the profitability of new projects.
Permits & land availability: Despite political progress, approval procedures remain lengthy and land-use policies vary by region.
Grids & redispatch: Grid bottlenecks and curtailments lead to reduced revenues and additional administrative workload.
Species protection & public acceptance: New standards simplify some aspects, but detailed requirements and citizen participation increase complexity.
Repowering & IT security: Older turbines need to be replaced, recycling issues remain unresolved; at the same time, regulatory requirements are increasing due to KRITIS regulations.

This combination of factors means that although Prokon has a strong project pipeline, liquidity must be specifically strengthened.

With the offer to Windauf eG, we are doing exactly that: we are securing short-term financial stability while ensuring that the projects do not go to external investors.

For Prokon members, this means…

Projects remain in members’ hands

Langwieden and Blumberg go to Windauf and thus remain within the cooperative family.

Capital strengthening for Prokon

The proceeds are being invested in the development of new projects, an important step on the path to doubling our capacity by 2030.

Transparent conditions

The offer price is based on an external valuation report and is additionally reviewed by the Cooperative Association.

Long-term capacity for action

Prokon can continue to invest and grow despite challenges.

The view ahead

Even though 2025 will be challenging due to low wind levels and market conditions, we see strong long-term prospects:

With the EU’s new CO₂ emissions trading system (ETS2) coming into effect in 2027, CO₂ prices will rise – making renewable electricity even more attractive.
Grid expansion, along with the growing use of e-mobility and heat pumps, will significantly increase demand for clean electricity.
Repowering existing turbines and the development of new sites will open up further potential for expansion.

At our anniversary event, Mr Jorberg, Chairman of the Supervisory Board of GLS Bank and EWS Schönau, presented a compelling vision for the future about one million electricity customers, supplied through their own renewable generation as cooperative members – even when the sun isn’t shining and the wind isn’t blowing.

This vision is also a guiding principle for Prokon: we aim to shape the energy transition with member ownership – broad-based, powerful, and enduring.

Prokon and Windauf are already working closely together. In the long term, we are pursuing the goal of bringing the two cooperatives even closer – possibly even towards a merger. Such a decision can only be made by the members (requiring 75% approval in each case). Nothing has been decided yet – but the idea of pooling strengths and becoming even more effective together is an important part of our strategy.

Mitglieder entscheiden

The committees of both cooperatives have established the framework:

Prokon has decided to enter into sales negotiations
Windauf has opened the subscription phase

However, the actual decision lies in the hands of the members: Only when a sufficient number of shares have been subscribed can the boards of directors and supervisory boards of both cooperatives deliberate and decide on the sale of the wind farms to Windauf eG.

This ensures it remains a truly cooperative process: Committees set the framework – members bring it to life.

Meaningful participation in Windauf eG

Windauf eG offers a low-risk and transparent complement to Prokon membership:

Minimum interest rate of 2.5% p.a., target return of 3%
No obligation for additional contributions, liability limited to the invested amount
Direct impact: Your participation determines the acquisition of the two wind farms
Double impact: You secure projects owned by members and create financial leeway for Prokon

Now more than ever: Shaping the future together

The current subscription phase is not just a capital measure – it is a commitment to the strength of the cooperative model and the energy transition:

We address challenges openly.
We respond with a solution that involves our members.
Together, we secure the foundation for further growth.
We continue to drive the energy transition forward – now more than ever!

All information about the subscription can be found here:

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