Wider generation TNUoS tariff by zone, 2026/27

£/kW per year for a transmission-connected battery. April forecast uses the 2025/26 generic battery ALF of 3.89%. Positive values are costs, negative values are credits.

+£7/kW cost

−£8/kW credit

Source: NESO 2026/27 Final TNUoS Tariffs (doc 376341). Base map: CARTO, OpenStreetMap contributors.

Note: Wider tariff = System Peak + (YR Shared × ALF) + (YR Not Shared × ALF) + Adjustment, using the 2025/26 generic battery ALF of 3.89% (the value carried in the April forecast).

MODOENERGY