Breaking down your electricity bill
The Electricity Transmission part of your bill, which is subject to approval by the energy regulator, Ofgem, covers the cost of building and maintaining the network. Our transmission network cost in 2021/2022 was £20 of the average annual household bill of £662 – that’s around 3.0% of your total annual bill.
*We use Ofgem’s methodology to report the impact of our charges. The figures quoted are based on 2021/2022.
How the £20 cost breaks down
The £20 of National Grid costs can be broken down as follows:
**When we invest in the network, the cost is spread so consumers pay over the life of the asset. This portion relates to past investment.