ACM publishes tariff proposals grid operators

Last week, the ACM published the tariff proposal of TenneT and the regional grid operators for 2025. In this proposal, transmission costs for TenneT's average extra-high-voltage (EHS) connected customers decrease by 8% and increase by at least 0.4% for high-voltage (HS) connected customers. In contrast, connection costs increase sharply.

Transportation Rates

TenneT expects tariffs for extra-high-voltage grid customers to fall by an average of 8% in 2025, while users of lower-voltage grids can expect a slight increase of 0.4%. Despite rising costs in the long term, TenneT expects the impact to remain limited in 2025, thanks to some one-off changes such as time-dependent tariffs. These changes may encourage large consumers to shift their energy consumption to times of lower load on the grid.

Lower electricity prices in 2025 also play a role in dampening grid costs. TenneT purchases its own energy to absorb transmission losses and to maintain the balance on the grid. Because energy prices have fallen compared to recent years, tariffs will not rise further as previously feared.

Connection fee

The most notable change in network tariffs is that the cost of a new electricity connection rises sharply, ranging from 25% to 40% higher than in 2024. This is because last year the ACM changed the method decisions used to calculate tariffs. Network operators say that through the proposed change, future connection costs will be more in line with the realistic costs of creating new connections to the power grid.