Scottish Power EV Saver: 8.5p/kWh overnight
EV Saver beats every mainstream UK off-peak rate by 0.3p/kWh — and Scottish Power's electricity is 100% renewable wind. Here's how much an plug-in home battery saves on the lowest off-peak rate available.
How much can you save on Scottish Power?
See your personalised battery savings using Scottish Power EV Saver & EV Optimise tariff rates for your region.
Which Scottish Power tariff are you on?
What region are you in?
Your supply region is on your Scottish Power bill or online account.
How the Scottish Power EV Saver Tariff Works
Scottish Power's EV Saver tariff offers a simple time-of-use structure: between midnight and 5am, you pay just 8.5p/kWh — a competitive off-peak rate, matching Octopus Go. During the remaining 19 hours, you pay the standard regional rate.
By pairing this tariff with an plug-in home battery, you can automatically charge overnight at the cheap rate and use that stored energy to power your home during the day. With a spread of over 22p between off-peak and daytime rates, Scottish Power offers some of the best savings potential for battery owners.
EV Saver vs EV Optimise — Which Is Better for Batteries?
Scottish Power offers two EV-focused tariff options:
| Feature | EV Saver | EV Optimise |
|---|---|---|
| Off-peak rate | 8.5p/kWh | 8p/kWh (EV only) |
| Off-peak window | 00:00–05:00 (5 hours) | Anytime (smart charger) |
| Best for | Battery + EV owners | EV-only smart charging |
| Requires | Smart meter | Easee charger + smart meter |
| Battery compatible | Yes — excellent | Limited — EV charger only |
| Energy source | 100% renewable wind | 100% renewable wind |
Tip: For home battery owners, EV Saver is the clear winner. It works with any battery setup and needs no special smart charger, unlike EV Optimise at 8p. EV Optimise is designed specifically for smart EV chargers, not home batteries.
Why Scottish Power for Battery Storage?
Scottish Power stands out for several reasons. Their 8.5p/kWh off-peak rate is competitive among UK Big Six suppliers. Their electricity comes from 100% renewable sources — primarily their substantial UK wind portfolio. And their EV Saver tariff is straightforward with no complex requirements beyond a smart meter.
For environmentally conscious homeowners, charging your plug-in home battery overnight with Scottish Power means your stored energy genuinely comes from clean, renewable wind power.
Why an Plug-In Home Battery Multiplies Scottish Power's Wind Advantage
Scottish Power's 100% renewable claim is meaningful but it's a contractual one — the grid still mixes power from every source. A home battery changes that picture: by physically storing electricity drawn between 00:00 and 05:00 (when overnight UK wind is at its peak) and using it during the day, you're literally time-shifting your home's consumption onto wind generation. It's the closest you can get to running your house on Scottish wind without owning a turbine.
Frequently Asked Questions
Do I need an EV for Scottish Power EV Saver?
Yes, Scottish Power requires you to own or lease a plug-in electric vehicle to access the EV Saver tariff. However, if you have both an EV and a home battery, both can benefit from the 8.5p/kWh overnight rate.
Do I need a smart meter?
Yes, a SMETS2 smart meter is required for the EV Saver tariff. Scottish Power can arrange a free smart meter installation if you don't have one.
Can I get 5p/kWh with EV Optimise?
Scottish Power has offered promotional 5p/kWh rates when purchasing an Easee charger through them. However, this rate applies only to EV charging via the smart charger, not to home battery charging. Check Scottish Power's website for current promotions.