EU approves EUR 3.1 billion Spanish State aid scheme for high-efficiency cogeneration (CHP) electricity

Mechanism

Spain notified the Commission of a EUR 3.1 billion horizontal aid scheme (case SA.114058) to support new-build and substantially-refurbished high-efficiency cogeneration (CHP) capacity, assessed under the 2022 Guidelines on State aid for climate, environmental protection and energy (CEEAG) rather than the Clean Industrial Deal State Aid Framework (CISAF) used for adjacent Spanish manufacturing-capacity schemes (e.g. SA.119884, SA.119880). Support is allocated via competitive auctions that set an investment-compensation premium, topped up by an operating premium recalculated quarterly against market electricity prices, fuel costs and carbon prices — a design intended to limit overcompensation versus a flat feed-in tariff. Eligible fuels are natural gas (plants must include equipment enabling at least 10% renewable-hydrogen use by volume), bioliquids, biogas, and solid biomass. The scheme runs a full decade, 28 January 2026 to 27 January 2036, and contributes to Spain's National Energy and Climate Plan and EU energy-efficiency targets.

Downstream implications

• Extends Spain's post-2025 pattern of Commission-approved decarbonisation state aid (CISAF cleantech

manufacturing SA.119884, industrial decarbonisation SA.119880) into the power-generation segment, reinforcing a domestic-capex bias for CHP equipment suppliers serving the Spanish market.

• The natural-gas-with-hydrogen-readiness eligibility condition creates a de facto subsidy floor for

hydrogen-blend-capable turbine and boiler retrofits, a design also used in adjacent EU national CHP and industrial-heat schemes.

• Ten-year duration and quarterly-indexed operating premium reduce merchant-price risk for CHP

developers, likely pulling forward FID timing on projects that were price-risk-gated.

Open questions

• Whether individual project-level state aid notifications (vs. this scheme umbrella) will be required

for large single CHP plants exceeding standard notification thresholds.

• Sector allocation of the EUR 3.1 billion across natural-gas, biomass and biogas CHP has not been

disclosed; watch for Spain's first competitive auction results to determine the realised fuel mix.