Scottish Power is a Big Six energy supplier owned by Spanish utility Iberdrola. They are the only Big Six supplier to generate 100% of their own electricity from renewable sources, primarily onshore and offshore wind.
Founded
1990
Headquarters
Glasgow
Customers
3 million
Green Rating
Good
Scottish Power has been supplying energy in Great Britain since 1990. They are owned by Iberdrola, the Spanish renewable energy group. Scottish Power became the first Big Six supplier to generate all their electricity from wind power, having sold their gas-fired power stations.
Scottish Power offers fixed and variable tariffs across Great Britain, not just Scotland. Their variable tariff follows the Ofgem price cap. Fixed deals typically run for 12 months and can offer savings versus the cap rate depending on market conditions.
Scottish Power is unique among the Big Six in generating 100% of their electricity from renewable sources, specifically onshore and offshore wind. They operate wind farms across the UK and are developing new offshore wind capacity in the North Sea.
Scottish Power offers free smart meter installations and an app that shows real-time energy usage. They also offer electric vehicle charging solutions and heat pump installations as part of their push towards electrified home heating.
Scottish Power supplies energy across Great Britain. Compare their plans in these areas:
No, despite the name, Scottish Power supplies gas and electricity across all of Great Britain — England, Scotland, and Wales. You can switch to Scottish Power regardless of where you live in GB.
Yes, Scottish Power is the only Big Six supplier that generates 100% of its own electricity from renewable sources, specifically wind power. They sold all their gas-fired power stations and now invest exclusively in wind energy.
Yes, Scottish Power is owned by Iberdrola, a large Spanish utility company focused on renewable energy. Iberdrola is one of the world largest wind energy producers and has owned Scottish Power since 2007.
See how Scottish Power compares to other suppliers in your area.
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Supplier data sourced from Ofgem and Citizens Advice. Last updated April 2026.
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