Transmission Network Use of System (TNUoS)

Batteries can generate revenue by exporting during Triads. The amount they earn depends on the Embedded Export Tariffs.

Embedded Export Tariffs vary from region to region

Depending on the Grid Supply Point (GSP), the amount that batteries are paid for exporting during Triads varies. We model Triad tariffs, also called Embedded Export Tariffs, using ESO's five-year regional Transmission Network Use of System (TNUoS) charges. We assume that they remain stable from year 6 onwards.

Below, we show these tariffs for the next three years.

We assume 100% capture rate for Distribution connected batteries

These tariffs only apply to Distribution connected batteries. We model their Triad revenues assuming 100% capture rate. In other words, assuming they are exporting at full power over the Triads. You can apply your capture rate to these numbers.