Wales proposes underground-first approach for new electricity lines

The Welsh Government has opened a consultation on an underground-first planning approach for certain new electricity lines in Wales.

The proposed rules would apply to devolved onshore electricity circuits operating between 11kV and 132kV. The plan is intended to end the use of large steel lattice pylons for the electricity lines covered by the proposal.

Under the proposed hierarchy, underground circuits would be considered before wooden poles and other less intrusive infrastructure. An overhead option would need planning justification supported by environmental, technical or economic evidence.

The consultation relates to electricity lines connected with devolved onshore generation projects. The Welsh Government says infrastructure should limit effects on communities and the environment.

The proposal does not cover transmission infrastructure operating above 132kV. It would also exclude circuits covered by permitted development rights or projects requiring consent from the UK Government.

Responses to the consultation are due by 15 January 2027. The Welsh Government proposes to put the approach into effect through an interim planning statement, followed by changes to Planning Policy Wales.

The government has said it is carrying out work to deliver its commitment on steel lattice pylons for new 11–132kV electricity lines. A minister said a further update would be provided later.