Before you buy

Shopping with ScottishPower

ScottishPower's best-known extra is Power Saver, which lets you choose eight hours a week of half-price electricity. The discount comes back as credit on your bill, or on your meter if you pay as you go.

For EV drivers, EV Optimise gives a lower smart-charging rate and can be added to most of its tariffs, though not its time-of-use ones. It also runs the Help Beat Cancer tariff, which raises money for Cancer Research UK.

ScottishPower's prices aren't in my energy comparison, because it doesn't publish them in a form I can use. To see what it would charge for your home, get a quote on its site, then set that figure against the cheapest deals in my comparison for your region.

To switch, enter your postcode on ScottishPower's quote page, or use its webchat, which is open seven days a week.