Tariffs
The gap between cheap and pricey is the money.
A battery only pays off on a tariff with a real spread between its cheapest and most expensive rate. You charge overnight when power is cheap, then run the home through peak. Every tariff here works without an EV. A smart meter is usually required. Rates are representative and vary by region.
The biggest fixed peak-to-trough gap in the UK.
Off-peak
16.4p
02:00–05:00 super off-peak
Peak
43.4p
27p spread you bank
Rates vary by region; confirm by postcode at sign-up.
Half-hourly wholesale prices. Biggest upside on windy nights.
Off-peak
~8p
cheapest overnight ½-hours
Peak
~36p
28p spread you bank
Prices change every 30 minutes and by region.
Half-price power midnight to 5am. The cleanest battery-only fit.
Off-peak
~13p
00:00–05:00 half-price
Peak
~26p
13p spread you bank
Half-price applies to the regional standard unit rate.
One cheap five-hour night window. Cheapest charge, set and forget.
Off-peak
8.5p
00:30–05:30 (5h)
Peak
~27p
19p spread you bank