Wales Considers Ban on Steel Electricity Pylons, Favoring Underground Cables

The Welsh government is exploring a ban on traditional steel pylons for electricity transmission lines under its jurisdiction, signaling a potential shift towards burying cables underground. This move is part of a broader consultation on an "undergrounding-first approach" launched by the government, which aims to "reduce the visual impact of electricity infrastructure, helping to protect landscapes and local amenity."

Plans for new electricity lines, particularly those up to 132 kilovolts, could prohibit the use of large steel lattice pylons. This policy aligns with a pledge made by Plaid Cymru, a partner in the Welsh government, during the last Senedd election. Burying cables is also cited as a method to make the infrastructure less vulnerable to severe weather and reduce potential harm to wildlife, including birds.

However, the consultation document acknowledges that undergrounding electricity circuits is generally more expensive to install and maintain. It also notes that this method could lead to construction impacts during the installation process. Where overhead cables are deemed necessary and meet specific planning tests, the government's policy may allow for the use of wooden poles or other less intrusive infrastructure.

The Towy Valley has seen significant local opposition to proposed pylon networks, with local Plaid Cymru politicians speaking out against these plans. Green Gen Cymru, the company behind the proposals, has previously stated that undergrounding cables would be considerably more expensive than overhead lines. The company has been approached for comment on the Welsh government's new consultation.

This initiative reflects a growing concern over the visual impact of large infrastructure projects on scenic landscapes and a desire to improve the resilience of energy networks against environmental challenges.