What Are Triad Charges

A Triad Charge, also referred to as a Transmission Network Use of System (TNUoS) is a charge made to customers with half-hourly meters in proportion to their energy usage during Triad periods of November and February each year (typically occurring during cold weather between 17:00 and 18:00) when industrial power demand can coincide with peak demand from domestic clients. The charge is made to finance maintenance of the UK electricity grid.



< Return to FAQ category: Energy Pricing