Each year, the National Energy System Operator (NESO) updates TNUoS rates based on what they determine is needed to fund the grid. The new rate for FY26 (which starts 1 April 2026) was published on 30 Jan - it’s slightly lower than the earlier forecast.
If you’re a tem customer, you don’t need to do anything. We’ll automatically apply the updated rate as 100% passsthrough from April, and you’ll see it clearly on your bill under the “TNUoS – Residual Banded Charges” line item.