Federal government lowers WACC for 2027, meaning electricity could get cheaper

The Swiss government is reducing the price of investing in Switzerland’s electricity grid (the WACC) to 3,28 percent for 2027. This means that electricity bills could get cheaper for households in Switzerland.

WACC lowered to 3,28 percent for 2027

The Federal Department of the Environment, Transport, Energy and Communications (DETEC) has announced that it has lowered the Weighted Average Cost of Capital (WACC) for the 2027 tariff year. The WACC (also known as kalkulatorischer Zinssatz) is the average cost of investments in Switzerland’s electricity grid. For the 2027 tariff year, the new rate will be 3,28 percent, according to a press release.

The announcement represents a reduction compared to the 3,43 percent for the 2026 tariff year. This means that electricity bills could be reduced in Switzerland, with electricity consumers saving around 34 million Swiss francs from 2026 onwards.

The WACC is a type of interest returned to investors and operators of the electricity grid, calculated by the federal government under the Electricity Supply Ordinance. “Network usage costs are a significant component of the electricity price,” explains the DETEC.

Electricity bills could reduce in Switzerland

While the lower rate means that one part of your electricity bill will most likely reduce in price, the final amount you pay will also depend on other factors, such as the market price of energy and taxes or levies.

The cost of electricity in Switzerland will also fall slightly in 2026, by an average of 4 percent, following an announcement by the Swiss Federal Electricity Commission (EIcom) last year. The average household will pay 27,7 cents per kilowatt hour (kWh) for electricity in 2026, a 4 percent decline (or 1,3 cents per kWh less) compared to 2025.