The Ofgem energy price cap limits how much suppliers can charge per unit of energy and per day for standing charges on certain default tariff arrangements, with the detailed numbers updated periodically. It is not a special EV charging rate, and it does not freeze every fixed, tracker or time-of-use product on the market. Home EV costs still depend on your contracted unit rates in the hours you charge, your kWh used, and the standing charge on your account. Use the cap as context for default deals. Read your own tariff schedule for EV planning, and treat third-party example rates as illustrative only.
What the cap covers in plain terms
Ofgem sets a cap that constrains typical dual-fuel or electricity default tariff prices in a defined way, including unit rate and standing charge elements for relevant customers. The headline pounds-per-year figures often shown in media are illustrations for assumed consumption, not a personal promise.
If you are on a fixed deal or a specialised EV time-of-use product, your prices follow that contract rather than a simple single capped flat rate.
Why EV drivers still see different bills
Two neighbours under broadly similar default arrangements can still diverge once EV kWh volumes differ. A driver adding 200 kWh a month will see a larger uplift than a low-mileage PHEV user.
When one household moves to an overnight EV tariff, comparisons against the capped default become apples to oranges. Compare like with like.
Standing charges and unit rates again
Cap communications usually discuss both standing charge and unit rate ceilings for relevant tariffs. EV charging mainly interacts with unit rates. Standing charges remain the cost of connection.
Do not invent a narrative that the cap makes home charging free or that EVs are excluded from capped protections in a mysterious way. Read Ofgem's current pages for the period you care about.
- Check whether you are on a default arrangeable tariff or a fixed product.
- Check your overnight rate if you use an EV tariff.
- Recalculate after each personal tariff change, not only after media cap updates.
Using the cap in budgeting without false precision
For rough planning, multiply expected EV kWh by an illustrative unit rate consistent with your deal type, then add other household consumption. Keep standing charge as a separate monthly line.
Replace illustrations with your bill data as soon as you have a month of home charging history.
Practical actions for September 2026 readers
Confirm your live tariff in the supplier account, enable smart charge scheduling if you rely on cheap periods, and keep public charging receipts separate so home efficiency is measurable.
If a salesperson claims the price cap guarantees a particular EV pence-per-mile forever, treat that as marketing, not regulation.
Frequently asked questions
Does the price cap set my EV night rate?
Not automatically. Many EV night rates come from specific time-of-use products outside a simple reading of the default cap illustration.
Are standing charges capped too?
For relevant default tariff arrangements, Ofgem's cap framework includes standing charge elements. Your contract type still matters. Check current Ofgem explanations.
Will the next cap update change my fixed EV tariff?
Fixed deals follow their own terms until they end. Cap updates are more directly relevant to default tariff customers.
How should I quote running costs on this site?
As illustrative worked examples with clear assumptions, separate standing charges, and a reminder to use personal tariff data and surveyed install quotes for capital cost.
Core buying guides
Start with these high-intent guides, then dig into the rest of the library.
Related guides
Sources and further reading
How this guide was prepared
This guide was written by the Local EV Installers Editorial Team. We compare official guidance, legislation and established consumer information, separate general information from project-specific advice, and show publication dates and sources. We do not accept installer accreditation claims at face value.