Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, if she will make an estimate of the number of kilometres of transmission network that will be added to the electricity grid in the (a) 2020s, (b) 2030s and (c) 2040s.

The Department does not estimate the future size of the transmission network. The Electricity System Operator, along with Transmission Operators and Ofgem, is responsible for the development of the network. The ESO is required to publish annual recommendations for which transmission network reinforcement projects should receive investment, but this does not include data on the length of projects. The latest recommendations, published in the 'Beyond 2030' report, cover network needs up to the mid-2030s. The report is available on the ESO's website.