EDF advertises 6.66p/kWh from 11pm to 6am every night on GoElectric. That is seven hours of cheaper electricity for your car and your home. You need an EV charged at home and a compatible smart meter connected to EDF. For eligible households with a home battery, this is firmly among the offers I would compare first.
The price cap changes today—but read beyond the headline
Ofgem’s October–December cap is £1,723 a year for a typical gas-and-electricity household paying by Direct Debit, up 4%. That is a benchmark based on typical consumption, not a ceiling on your actual bill.
The published average electricity unit rate is 26.32p/kWh, compared with 26.11p in July–September. The average daily electricity standing charge falls from 57.19p to 54.83p. October’s electricity figures incorporate the temporary removal of VAT. These are national averages across England, Scotland and Wales; your region and payment method matter. Existing fixed rates do not automatically change with the cap.
So the 4% headline is not a 4% electricity increase. The useful question is still: how much will your home pay on the tariff that best fits its use?
Why seven hours is a big deal
A low overnight rate is attractive. Enough time to use it properly is just as valuable. Seven hours gives an EV-and-battery household more room to schedule charging before the daytime rate returns.
For illustration, a 7 kW EV charger running at full power for seven hours could draw 49 kWh from the supply. That compares with 35 kWh over five hours at the same power. Actual charging is limited by the car, its state of charge, losses, charger controls and the electricity available while the house and home battery also draw power. It is not a promise of 49 kWh added to the car’s battery.
That extra time can reduce the pressure to charge everything simultaneously. It does not increase your incoming supply capacity or the charging limit of your home battery.
Cheap electricity for the house, too
This is the part that interests me most. EDF confirms that GoElectric’s off-peak electricity is for the whole home. It is not simply an EV-only rebate.
With a suitable system, you can charge a home battery during the cheap window and use stored energy later. At an illustrative 90% round-trip efficiency, electricity bought at 6.66p costs approximately 7.4p per kWh delivered from storage, before battery wear and equipment costs. That calculation is an example, not a savings forecast.
A correctly sized battery can substantially reduce daytime imports. It still needs enough usable capacity for your winter demand and enough output power for your loads. The standing charge remains, and you pay the daytime rate whenever the battery cannot cover consumption.
Solar adds generation from your roof, reducing bought electricity and potentially earning export income. The tariff, battery and panels should be modelled together; solar savings cannot be counted twice as tariff savings.
What should you check before switching?
- Eligibility: GoElectric is for EV drivers charging at home. A home battery alone does not qualify you. EDF says the basic tariff works with any EV and charger; a communicating smart meter is essential.
- The complete quote: Compare the daytime unit rate and standing charge for your postcode, the fixed term and your expected annual consumption in each band.
- Exit fees: EDF currently lists a £75 exit fee. Check your existing supplier’s fees as well.
- Solar exports: Confirm the export tariff you can pair with your import supply and include export income in the comparison.
- Battery controls: Check grid-charging settings, usable capacity, charging power and how EV charging shares the incoming supply.
Credit where it’s due, EDF
6.66p and seven hours is a combination worth turning heads. I would put GoElectric on the shortlist for eligible EV-and-battery households. That does not mean it wins every annual-bill comparison: a different daytime rate, export payment or pattern of use can change the answer.
My advice to clients is simple: review your tariff regularly. You can ask ChatGPT to compare current offers using your postcode, annual consumption, EV, charger and battery details. Ask it to check supplier sources and compare the complete bill, then confirm the terms directly with the supplier before switching.
Read our solar and battery tariff guide and how battery sizing can reduce expensive daytime imports.
Sources
- EDF GoElectric: rate, charging window, eligibility and exit fee
- Ofgem: October–December 2026 cap and electricity rates
Checked 1 October 2026. Independent editorial commentary; no EDF affiliation. Tariff offers change. Calculations are illustrative and exclude equipment costs, battery wear and financing.
Could solar and a battery work with your tariff?
Start with your roof and electricity use. A suitable proposal should show how the battery charges overnight, covers daytime demand and works with your solar generation.
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