Grid Delays Stall German Wind

10.8 gigawatts of offshore wind capacity now operate across 1,764 turbines in Germany's North and Baltic seas, enough to supply around 8.7 million households a year (Zeit, Focus). But the next stage is stuck. Only about 2.6 GW of future projects have secured financing, a 2025 auction attracted no bidders, and up to 16 GW worth roughly €50 billion may be frozen by grid delays (FAZ, BalticWind). The turbines are not the problem. The business case for building the next wave is.

For Malta, this is not a distant German engineering story. It is a warning about how the energy transition actually happens inside the EU: not through targets alone, but through cables, financing rules and household bills. A country can approve clean power on paper and still fail to deliver it if the grid arrives late.

Germany's offshore wind law sets a target of 30 GW by 2030 and 70 GW by 2045 (WindSeeG). At 10.8 GW, Germany is roughly a third of the way to the 2030 mark. The industry now expects that target to be reached only around 2032. Four problems explain the slippage.

Why the Next Wave Can't Get Built

Money got expensive. An offshore wind farm requires most of its spending before it produces a single unit of electricity, then earns its money back over 20 to 30 years. When the ECB, which sets eurozone interest rates, lifted its deposit rate from below zero to a peak of 4% in 2023, borrowing costs rose sharply (ECB). Rates have since eased, but they are still far above the period of cheap money in which many existing farms were financed.

Equipment costs surged. EnBW, one of Germany's major utilities, says the cost of turbines, steel foundations, cables and specialised vessels rose by 30% to 40% over five years (FAZ). The European Court of Auditors has also warned about raw-material risks across the green-transition supply chain (ECA).

Auctions pushed developers too far. Recent German auction rounds required developers to pay the state for the right to build, a system known as negative bidding. That looked efficient when financing was cheap and costs were stable. Once both changed, the model stopped working. The 2025 round drew no bidders.

The grid is late. Twenty-two completed turbines, with 323 MW of capacity, are sitting idle because the subsea cables linking them to shore are not ready (Zeit). TotalEnergies has reportedly reviewed concessions won since 2023 because of grid delays (The Equilibrium). The blockage is not only German. The Netherlands depends on TenneT, the same operator behind much of Germany's offshore transmission, and Dutch estimates put delivery of new high-voltage lines at 8 to 12 years (consultancy.nl, Energy Global).

Offshore Wind's Price Paradox

Low wholesale prices are now making the financing gap worse. When wind and solar output is high, German electricity prices regularly fall below zero because the grid cannot absorb the surplus (Energy Charts). A wind farm earns least when it produces most.

That is the contradiction at the centre of offshore wind. When it runs, it lowers electricity prices, which helps consumers. But developers need predictable income before banks will lend them the billions needed for construction. Cheap power reaches households only after someone has paid for the grid and for the revenue guarantee that makes the project bankable.

France has chosen one route. The European Commission approved a French support scheme worth up to €63 billion for offshore wind projects, using two-way contracts for difference over 25 years (BalticWind). If the market price falls below an agreed floor, the state tops up the developer. If the price rises above a ceiling, the developer pays money back. That reduces revenue swings and cuts borrowing costs. Germany's offshore wind association BWO wants Berlin to adopt the same model.

Germany already spends several billion euros a year on redispatch, the system under which power plants are paid to raise or reduce output because the grid cannot move electricity to where it is needed. The Bundestag recently approved a grid expansion plan worth about €44.65 billion to carry northern wind power south (Bundestag). Those costs ultimately reach households through network charges on electricity bills.

Developers face the immediate risk: they hold awarded sites they cannot build profitably. Households pay through grid charges, and taxpayers may pay again if stalled sites have to be auctioned a second time. The 10 GW milestone shows the technology works. What has failed is Germany's zero-subsidy auction model, designed for a world in which borrowing was almost free. The next 20 GW will need grid connections before auctions and guaranteed minimum prices before construction begins.