Friday, 3 July 2026 · London
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Tariffs · The comparison · Updated this week

Every cheap-rate EV tariff in Britain, ranked.

We compared the six major smart EV tariffs on what they actually deliver overnight — not the headline rate on the marketing page. One big name is quietly slipping down the table.

A dark grey Tesla saloon charging from a wall-mounted home charger at dusk, parked on a gravel drive beside a house
8p/kWh
Best off-peak rate
6
Smart tariffs compared
£164/yr
Model Y on IOG
How we work

Independent, affiliate-funded, and honest about both.

Written by Ross and the JustWatt editors — two by-lines, no ghost-written filler. Who we are →
01

We don't sell what we review.

No chargers, no schemes, no installs. Our only job is to be right.

02

Affiliate links are disclosed, never decisive.

Some links earn us a commission. They never change a verdict or a ranking. How that works →

03

Every number shows its working.

Rates, tariffs and assumptions are cited and dated. If we can't source it, we don't say it.