Drax Energy Solutions’ Post

National Grid ESO published its summer update of forecast Transmission Network Use of System (#TNUoS) tariffs to apply for 2025/26, on 31 July. Forecast tariff levels have seen an overall slight decrease since the initial forecast in April. 📉 In part, this is due to a 1.1% reduction in the amount of revenue to be recovered from demand users of the system. An updated site count forecast has driven some deviations from this average reduction. 👇 Both the half-hourly (HH) and non half-hourly (NHH) average tariffs have also fallen. The ESO reports that the average HH gross tariff forecast has reduced £1.13/kW to £6.64/kW and the average NHH tariff is forecast to dip 0.07p/kWh to 0.30p/kWh. However, there’s a significant amount of regional variation to these movements. 📍 Adding both the residual fixed charge and the HH tariff for a representative Low Voltage Site Specific (LVSS) Residual Band 2 customer (based on an average 22kW demand over the triad periods), the forecast tariff ranges between £2,548/year and £2,714/year. This compares to between £2,584/year and £2,840/year in the April forecast. While the forecast tariffs have decreased slightly, they remain significantly higher than tariffs in 2024-25. Taking the arithmetic average across regions, for a typical LVSS customer, the average tariff is expected to increase by 30.4% based on the latest forecast.. see figure below ⬇️ Want more Intelligence? Our Customers get it delivered straight to their inboxes. Check out the link in the comments for Daniel Starman's latest analysis 👇

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