Electricity Transmission Network Allowed Revenues 2026 / Demand Transmission Use of System (D-TUoS) Tariffs 2025/2026
The CRU has published an Information Paper on the Electricity Transmission Network Allowed Revenues for 2026 and the associated Demand Transmission Use of System (D-TUoS) tariffs for the 2025/2026 tariff year.
The final 2026 allowed revenues of €1,389.79m (nominal) leads to a tariff year revenue of €1,395.64m, which is to be recovered during the tariff period 1 October 2025 to 30 September 2026. This represents a tariff year (2025/26) decrease of circa 1.6% relative to the €1,412.08m that was approved for recovery during the previous year (2024/25). The tariff year revenue (2025/26) represents an increase of circa 6.5% relative to the €1,310.80m that was approved for recovery during the previous tariff year (2024/25).
This year’s annual revenue and tariff process marks a transitional phase between the Price Review Five (PR5) decision and Price Review Six (PR6). This means the allowed revenue calculations from PR5 (2025) and the CRU’s PR6 Draft Determination assessment (2026) collectively inform the revenue to be recovered from customers through electricity network tariffs over the period 01 October 2025 – 30 September 2026.
As part of the annual revenues and tariff process, the CRU has also considered and approved a number of adjustments to the Draft Determination revenues. For transmission, these include, inter alia, provisions related to Article 13.7 of the Clean Energy Package and Security of Supply.
The transmission Average Unit Price (AUP) for the 2025/2026 period is estimated to be 4.03c/kWh, which is an increase of circa 3% relative to the current AUP. The combined transmission and distribution AUP for the 2025/2026 period is estimated to be 7.73c/kWh, which is an increase of circa 6% relative to the current AUP.
In bill impact terms, the estimated combined transmission and distribution impact results in an increase of approximately €29 (or €2.40 per month) in the network element of a typical domestic customer's bill for the 2025/26 tariff year. This increase is driven by three key factors: (i) the Price Review Six Draft Determination allowances for 2026, (ii) adjustments to the approved allowances following the 2026 annual revenue and tariff process, and (iii) updates to model inputs, including revised demand forecasts and cost parameters.
The D-TUoS tariffs are charged to suppliers, who may choose how, or whether, to pass them on to their customers. A customer’s annual bills depend on other factors such as wholesale market costs (which are in turn driven by factors such as international commodity prices), capacity market costs and other system costs.
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