Renewables curb power prices as gas pass-through accelerates
An ECB study shows that renewable energy growth has weakened the link between wholesale gas and electricity prices across the euro area. Meanwhile, retail gas price pass-through has accelerated, with over half the currency bloc transmitting wholesale shifts within three months.
Decoupling power from gas
Higher low-carbon generation has dampened wholesale electricity price pressures during the 2026 energy price increase compared with 2021-22. In Spain, where renewable output is highest, the hours where gas determines power prices fell steadily.
France relies heavily on nuclear power, while Italian electricity prices still frequently track gas.
At the consumer level, transmission has accelerated for gas.
A 2026 Eurosystem survey found that wholesale gas changes feed into HICP inflation within one to three months across more than half of the euro area, whereas slow pass-through of 13 to 24 months dropped from 40 percent in 2022 to five percent.
Electricity pass-through remains spread between one month and two years.
Taxes, contracts and tariff structures
Retail energy markets have adopted shorter fixed-term contracts and dynamic tariffs linked to wholesale benchmarks.
However, retail price composition buffers households: in 2025, taxes and charges accounted for 31 percent of retail gas prices and 27 percent of electricity prices across the euro area.
Additionally, statistical authorities reformed HICP gas and electricity indices to capture actual contract mixes rather than only new contracts, improving measurement accuracy during price swings.
A faster fuse on inflation
Accelerated pass-through turns retail gas prices into a faster transmission channel for commodity cost shifts directly into headline inflation.
While renewables provide a welcome buffer for electricity bills, structural divergence across member states complicates uniform monetary policy.
Central bankers must remain alert to near-term price volatility.