British Gas Battery Storage Savings
On a British Gas Battery or EV tariff? See exactly how much a home battery could save you by charging at half-price overnight and powering your home during the day.
How much can you save on British Gas?
See your personalised battery savings using British Gas Battery & EV tariff rates for your region.
Which British Gas tariff are you on?
What region are you in?
Your supply region is on your British Gas bill or online account.
How the British Gas Battery Tariff Works
The British Gas Battery Tariff is designed specifically for homeowners with battery storage systems. Between midnight and 5am, you pay half the standard electricity rate for your region. During the remaining 19 hours, you pay the normal standard 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 — effectively halving the cost of a significant portion of your electricity usage.
Battery Tariff vs EV Tariff — Which Is Better?
British Gas offers two time-of-use tariffs with overnight discounts:
| Feature | Battery Tariff | EV Tariff |
|---|---|---|
| Off-peak rate | Half your standard rate (~12–13p) | Fixed 9p/kWh |
| Off-peak window | 00:00–05:00 (5 hours) | 00:00–05:00 (5 hours) |
| Best for | All battery owners | EV + battery owners |
| Regional variation | Yes — varies by area | No — fixed nationally |
| Daytime rate | Standard regional rate | Standard regional rate |
Tip: In most regions, the EV Tariff's fixed 9p/kWh rate is cheaper than the Battery Tariff's half-price rate. Run both options in our calculator above to see which saves you more in your region.
Why our plug-in batteries + British Gas Battery Tariff Is the Lowest-Friction Combo
British Gas is the only Big 6 supplier offering a tariff specifically named "Battery Tariff" — meaning, unlike OVO Charge Anytime or E.ON Next Drive, you don't need to declare an EV to access the off-peak rate. That makes the British Gas + a plug-in battery combination the least-hassle setup in the market: existing British Gas customer + plug-in battery + tariff switch online = saving inside a fortnight, no installer site visit, no DNO paperwork, no EV required.
Frequently Asked Questions
Do I need a smart meter for the Battery Tariff?
Yes, British Gas requires a SMETS2 smart meter to access the Battery Tariff or EV Tariff. If you don't have one, British Gas can install one for free.
Can I switch to the Battery Tariff from my current plan?
Yes, existing British Gas customers can request a switch to the Battery Tariff through their online account or by contacting customer service. You'll need to confirm you have a home battery system installed.
Is the off-peak rate guaranteed?
Like all variable tariffs, British Gas can adjust rates with notice. However, the structure of "half the standard rate" overnight remains the core offering. Our calculator uses the latest published rates.