Wind Farm Repowering

Overview

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

Most publications on Italian 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, an area idonea status or 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, an authorisation history and fifteen or twenty years of measured production, and a set of obligations, expectations and neighbours attached to all of it. Repowering 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. The old farm is your baseline, and in Italian permitting a baseline — an existing site that is an area idonea by law — is worth more than a survey.

What this guide 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 the Testo Unico FER and the 20% geometry, the FER X auction and the two-way CfD, grid connection and the injection cap, turbines and suppliers, dismantling and the fideiussione, land, usi civici and the compensation cap, pitfalls, a worked example, offtake, the capital stack including CDP and the BEI, taxation and the imbullonati rule, construction and commissioning, life after commissioning, repowering plus storage, exit and the Golden Power gate, acquiring a repowering project, economics and valuation, a six-region southern playbook, and the investment committee and data room. In scope: onshore wind in Italy, from a farm reaching the end of its Certificati Verdi or tariffa onnicomprensiva support or its technical life through to a repowered, energised, incentivised or merchant facility, 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, a DD request list, a closing matrix and a regional status sheet.

Who this is for

Owners, developers, investors, lenders and utilities holding or chasing an ageing Italian onshore wind farm and deciding what to build in its place.

What you get

• Practical repowering guidance, not market sizing
• Deal Evidence — real, public, dated repowering transactions from company releases, the MASE VIA portal 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 six-region southern playbook — Puglia, Sicilia, Campania, Basilicata, Calabria and Sardegna
• Italian statutory and technical terms given in the original, because a mistranslation costs you credibility with a Regione or a Soprintendenza
• A tear-out field checklist and twelve appendices, including control sheets, a model-input dictionary and a closing matrix
• 37 keyed sources from Terna, GSE, MASE, ARERA, the Gazzetta Ufficiale and the Italian courts, retrieved to 20 August 2026

Table of contents

1. How to use this guide: A working document, not a market report.
2. Part 0 — The Map: Who does what, and where the money is actually made.
3. Part 1 — Why Repower, and Why Now: The age wall, the subsidy cliff, and the four ways out.
4. Part 2 — Reading the Existing Asset: What you own, and what actually transfers.
5. Part 3 — Permitting the Repower: The Testo Unico FER, the 20% geometry, and the environmental-assessment route.
6. Part 4 — The Auction and the Route to Market: FER X, the two-way CfD, and the repowering coefficient.
7. Part 5 — Grid Connection: The point you inherit, the injection cap, and the curtailment.
8. Part 6 — Turbines and Suppliers: Machines, the height you are allowed, and the supply contract.
9. Part 7 — Dismantling and the Old Fleet: The obligation, the fideiussione, the blades and the second-hand market.
10. Part 8 — Land, Community and the Local Payment: Leases, usi civici, and the compensation cap.
11. Part 9 — Pitfalls: The ways a repower goes wrong that a greenfield does not.
12. Part 10 — The Worked Example: One old farm, from screening to commercial operation.
13. Part 11 — The Offtake: The CfD, the PPA market, and how a subsidy-light repower sells its power.
14. Part 12 — The Capital Stack: How a repower is financed, CDP, the BEI and the taxonomy frame.
15. Part 13 — Taxation and Incentives: Depreciation, the imbullonati rule, and the transfer-tax question.
16. Part 14 — Construction and Commissioning: Building around the old farm, and the tests that get you paid.
17. Part 15 — After Commissioning: O&M, insurance, and the case for running on.
18. Part 16 — Repowering plus Storage: Co-locating a battery on a grid point you already own.
19. Part 17 — Exit and Change of Control: Selling the repower, and the Golden Power gate.
20. Part 18 — Acquiring a Repowering Project: Diligence, structure, and the inherited liability.
21. Part 19 — Economics and Valuation: What the finished asset is worth, and which numbers to trust.
22. Part 20 — The Regional Playbook: Six southern regions, six sets of rules.
23. Part 21 — The Investment Committee: Turning the whole guide into a decision, and a data room.
24. The Field Checklist: Tear-out — everything that matters.
25. Appendices A–L — Reference and control sheets: Timeline · Glossary · On sources · Decision index · Asset-screening scorecard · Grid control sheet · Permit control sheet · Model-input dictionary · DD request list · Closing matrix · Regional status sheet · Sources

Research and sources

Material factual figures carry a source and an "as of" date, keyed to 37 numbered references drawn from Terna, GSE, MASE, ARERA, the Gazzetta Ufficiale, the Corte Costituzionale and Consiglio di Stato, ANEV and Elettricità Futura, specialist legal and technical commentary, and dated company and trade-press releases. Where credible sources disagree — as they do on the size of the ageing fleet and the volume rolling off support, because they count different universes — both figures are given and the difference explained rather than averaged. Where a widely circulated figure could not be traced to a published authority, notably land-lease canoni, dismantling-bond amounts and PPA price bands, it is labelled as convention or omitted. The FER X auction rules, the GSE regole operative, the aree idonee mapping and the regional laws were under active reform as this edition closed on 20 August 2026; re-verify anything you intend to rely on for a specific decision.

Licensing

Single-user licence. For use by the named licensee only. Redistribution, resale, posting to shared drives or internal circulation beyond the named licensee is a breach of licence. Team licences covering up to five named users are available.