Question follow-through · 118015

Electric Cables

To ask the Secretary of State for Energy Security and Net Zero, what estimate he has made of the costs of (a) undergrounding electricity transmission infrastructure and (b) developing overhead transmission lines.

answeredDepartment for Energy Security and Net Zero

About this written question

A written question asks a government minister for information in writing. Parliament publishes the question and any answer.

Answering body: Department for Energy Security and Net Zero
Tabled: 4 Mar 2026
Target answer date: 9 Mar 2026
Answer: 9 Mar 2026 · 5 calendar days after tabling

Elapsed calendar days describe the record timeline, not whether Parliament considers an answer on time.

Votes on this topic

Taxation (Energy and Vehicles) Bill Committee: New Clause 5 · 1 Jul 2026
Taxation (Energy and Vehicles) Bill Committee: New Clause 4 · 1 Jul 2026
Taxation (Energy and Vehicles) Bill Committee: New Clause 2 · 1 Jul 2026

These Commons divisions share a topic label. The question did not necessarily lead to a vote.

Recorded timeline

4 Mar 2026
Question tabled
To ask the Secretary of State for Energy Security and Net Zero, what estimate he has made of the costs of (a) undergrounding electricity transmission infrastructure and (b) developing overhead transmission lines.
9 Mar 2026
Target answer date
Date supplied by the official written-questions record.
9 Mar 2026
Answer published
Evidence published by the Institution of Engineering and Technology (April 2025) shows that the lifetime cost of underground transmission cables is around four and a half times higher than overhead lines. As costs are borne by the electricity bill payer, ...

Open official record

Official data retrieved 28 Sept 2026.

Later records

Possible follow-up questions

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