Wind Farm Repowering - Germany Edition 2026

OVERVIEW

This is a working document, not a market report. It assumes you are holding, or chasing, an ageing German wind farm and are trying to decide what to build in its place.

Most publications on German wind tell you how much capacity the country must add by 2030. That is a number you can get for free, and it will not help you. This guide tells you what to do with one specific old farm, in what order, and what happens when you do it in the wrong order - which, in repowering, is usually fatal to a permit or to an auction round rather than to the project outright, but is expensive either way.

The single organising idea: a greenfield developer starts with a blank field and a wind resource. You start with something better and worse - an existing farm that already has land, a grid connection, a permit history and twenty years of measured production, and a set of obligations, expectations and neighbours attached to all of it. Repowering is not a smaller version of greenfield development. It is the discipline of turning what you already have into leverage, and of knowing which parts of the old asset help you and which quietly expire the day the turbines stop turning.

WHAT THIS EDITION COVERS

Twenty-two parts covering the full repowering sequence - the map of who does what, why repower and why now, reading the existing asset, permitting under §16b and §45c, the auction and the route to market, grid connection, turbines and suppliers, dismantling and the old fleet, land, community and the local payment, pitfalls, a worked example, offtake, the capital stack, taxation and incentives, construction and commissioning, life after commissioning, repowering plus storage, exit and change of control, acquiring a repowering project, economics and valuation, a sixteen-state regional playbook, and the investment committee and data room. In scope: onshore wind in Germany, from an existing farm reaching the end of its twenty-year support term or its technical life through to a repowered, energised, remunerated facility, across all sixteen federal states, from a single replacement turbine to multi-machine parks. Out of scope: offshore wind, greenfield development on land with no wind history, turbine engineering above the tower flange, and day-to-day asset operation. Closes with a tear-out field checklist and twelve appendices - timeline, glossary, on sources, decision index, an asset-screening scorecard, grid and permit control sheets, a model-input dictionary, an acquisition DD request list, a closing matrix and a Land-status sheet.

WHO THIS IS FOR

Owners, developers, investors, lenders and utilities holding or chasing an ageing German onshore wind farm and deciding what to build in its place - including those crossing over from greenfield development, a utility M&A desk, a fund or farmland.

WHAT YOU GET

• Practical repowering guidance, not market sizing
• Deal Evidence - real, public, dated repowering transactions from company releases and trade filings
• What This Costs You - the specific mistake, and the specific consequence in schedule or euros
• Best Practices - the distilled instruction set closing each part
• Ask Before You Sign - questions to put to the counterparty before you commit
• A worked example, from screening to commercial operation
• A sixteen-state regional playbook - sixteen Lander, sixteen sets of rules
• German statutory and technical terms given in the original, because you will meet them in the original
• A tear-out field checklist and twelve appendices, including control sheets, a model-input dictionary and a closing matrix
• 142 keyed sources, drawn from the federal statutes, the Bundesnetzagentur, the Umweltbundesamt, the Fachagentur Wind und Solar and Deutsche WindGuard