Slovenia’s Constitutional Court has unanimously upheld the revised electricity grid charging system, rejecting objections to a methodology that links charges more closely to when consumers use power and how much network capacity they need. The Energy Agency introduced the methodology in October 2024. The judgment leaves it in force.
How the tariff system works
Network tariffs vary by season and time of day. Consumers are assigned agreed billing-capacity levels and may face additional charges if they exceed them. The reform is intended to encourage consumers to shift demand away from peak periods. It also aims to improve the use of existing infrastructure, potentially reducing the need for expensive network reinforcement.
Court rejects challenge to excess-capacity charges
The National Council challenged the system in 2025 amid controversy over its effects on households and companies. A key dispute was whether charges for exceeding agreed capacity amounted to financial penalties. The court accepted the regulator’s position that the charges reflect the additional burden on the electricity network, making them tariffs rather than sanctions.
The court also rejected arguments that excess-capacity charges had been calculated arbitrarily. It reaffirmed the Energy Agency’s authority to set network charges under domestic and European regulatory frameworks. The ruling resolves the constitutional challenge, while consumers and businesses still face the practical task of adjusting their consumption patterns to the new tariff structure.
