In the last decade ScottishPower has closed all of its coal plants, and with the sale of the remaining gas and hydro stations, the company now generates 100% of its electricity from wind power. Currently ScottishPower has 2,700 megawatts (MW) of wind power capacity operating or under construction in the UK, and a pipeline of future projects capable of generating more than 3,000 MW.

Keith Anderson, chief executive of ScottishPower, said: “This is a pivotal shift for ScottishPower as we realise a long-term ambition. We are leaving carbon generation behind for a renewable future powered by cheaper green energy. We have closed coal, sold gas and built enough wind to power 1.2 million homes.

“Every working day we are investing over £4m to deliver cleaner, smarter power for customers. From today we can focus solely on making energy generation cheaper, cutting carbon quicker, building smart grids and connecting customers to renewable electric future for transportation and heating.”

Dr Sam Gardner, acting director at WWF Scotland, added: “This is a hugely welcome move from Scottish Power and another clear signal that the clean energy transition is accelerating. Too often people talk about renewables being the future but this just shows how critical a role they already play in the here and now - cutting emissions, creating jobs and keeping our lights on. The latest climate science tells us that we will need to see this kind of transition replicated around the world and we’re proud to see a Scottish company creating a portfolio that works to keep people and nature safe.”