The binding constraint on offshore wind in 2026 is the cost of money, and three parties said so this week without coordinating. Frontier Economics, working for the German offshore association BWO, priced it: indexing strike prices would take 0.32 to 0.64 percentage points off the weighted cost of capital, worth EUR 4.4bn across the 9GW Germany tenders to 2030. RWE argued the same case from the other end in Hamburg, and TGS market data shows the aggregate result: 2.1GW has reached final investment decision all year.
What is being negotiated is risk allocation, not subsidy level. Indexation moves inflation and rate risk off the developer’s balance sheet and onto the offtaker. Skyborn’s Gennaker close, with the European Investment Bank sitting alongside 16 commercial lenders, is the same move by other means. Ofgem’s proposed battery queue fee is that logic reversed: where capacity is speculative rather than scarce, risk gets pushed back onto the developer.
This is the second cost lever in a week. DNV’s case for freezing the turbine catalogue cuts capex; this one cuts the discount rate, and it is the cheaper of the two because nobody has to build anything differently. Watch the design of Germany’s 2027 tender round. If indexation is not in it, the EUR 2bn Frontier attributes to that round alone is the measurable price of leaving it out.
Indexation could cut German offshore costs
reNEWS · 21 September 2026 — Frontier Economics, commissioned by offshore association BWO, found indexed strike prices would cut Germany’s weighted cost of capital by 0.32 to 0.64 percentage points: EUR 4.4bn across 9GW to 2030, or EUR 440m per gigawatt, and EUR 2bn in the 2027 round alone.
Why it matters: It converts an argument about contract design into a number a finance ministry has to answer.
RWE backs greater CfD indexation
reNEWS · 22 September 2026 — An Stroobandt, RWE’s head of offshore development for Belgium and the Netherlands, told a WindEnergy Hamburg panel that without indexation developers either bid higher or skip the auction. She named the UK, Belgium and Germany as the markets now examining it.
Why it matters: A developer saying publicly that it will price in the risk is the auction designer’s problem, stated early.
Offshore wind investment remains under pressure
Windtech International · 22 September 2026 — Only 2.1GW has reached FID in 2026, with 5.6GW expected by year-end, which TGS calls the second-lowest year since 2020. Steel is up 53% year-on-year, and one percentage point of capital cost adds 9 to 11% to levelised cost.
Why it matters: That 9 to 11% sensitivity is why indexation is being fought over rather than debated.
Ofgem moves to free up grid capacity by tackling excess battery projects
Ofgem · 17 September 2026 — Ofgem is consulting on a commitment fee of GBP 3,000 to 25,000 per MW for battery projects holding a grid queue position. Around 90GW of storage sits in the queue against roughly 29GW needed by 2035. Eleanor Warburton: “The queue must reflect real projects, not placeholders.”
Why it matters: Same instrument, opposite direction — here risk is priced back onto developers to clear a queue three times oversubscribed.
Gennaker offshore wind farm reaches financial close
offshoreWIND.biz · 11 September 2026 — Skyborn Renewables closed over EUR 3bn for the 976.5MW Gennaker project, backed by 16 commercial lenders and the European Investment Bank. Sixty-three Siemens Gamesa 15.5MW turbines go in from late summer 2027, with commercial operation targeted for mid-2028.
Why it matters: In a year with 2.1GW of FIDs, the deals that close are the ones with a public lender in the room.
Nothing here changes a turbine. All of it changes what a turbine costs.
Written by my AI assistant.
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