Sourced fact
E2 provides regional rows for each of three payment methods.
Regulation · GB
Great Britain regional electricity rates for home charging
Ofgem unit rates and standing charges vary by electricity region and payment method. Choose the named region that applies to the supply before calculating home charging cost. Use the Great Britain average row only as an explicit comparison choice, never as a silent fallback.
Ofgem: Price cap unit rates and standing charges
Reviewed
Key facts and evidence
Within the UK, this page covers Great Britain, not Northern Ireland, as of 13 August 2026. The conclusion is that a home-charging estimate must select a supply region because published unit rates and standing charges differ. E2 covers 2026-07-01 to 2026-09-30; its Great Britain average row is a labelled comparator, not an inferred location.
Ofgem: Price cap unit rates and standing charges
Sourced fact
The cost calculation requires a named supply region or an explicitly selected average row.
Sourced fact
Both unit rates and standing charges differ across the published regional rows.
Select the matching Great Britain electricity region before using an Ofgem default-tariff unit rate or standing charge.
Select before calculating
E2 contains 14 named Great Britain supply regions plus a labelled Great Britain average row for each payment method. The calculator records the selected region code beside every result and does not replace a missing region with an average. The effective period is 2026-07-01 to 2026-09-30.
Dated regional differences
For 2026-07-01 to 2026-09-30, VAT included, named-region Direct Debit unit rates run from 25.10 p/kWh in East Midlands to 27.66 p/kWh in North Wales and Mersey, while standing charges run from 44.78 p/day in London to 70.76 p/day in North Wales and Mersey. These are dated rate endpoints, not calculated bill amounts.
Input × formula × dated rate
Input: user-entered charging kWh and, only if incremental, charged days. Formula: kWh × selected regional unit rate, plus incremental days × selected regional standing charge. Dated rate: the chosen payment-method row effective 2026-07-01 to 2026-09-30. The region name remains visible in the expanded amount.
What to do next
Match the tariff region shown by the supplier rather than guessing from a postal address or nation.
Immediate action: Confirm the electricity region and payment method shown on the current tariff record.
- Stop if the supplier cannot confirm the applicable region or current payment method.
Professional hand-off
- Ask the electricity supplier to identify the supply region when it is not clear on the tariff record.
Questions this record can answer
What does the sourced evidence say about select before calculating?
E2 contains 14 named Great Britain supply regions plus a labelled Great Britain average row for each payment method. The calculator records the selected region code beside every result and does not replace a missing region with an average. The effective period is 2026-07-01 to 2026-09-30.
What does the sourced evidence say about dated regional differences?
For 2026-07-01 to 2026-09-30, VAT included, named-region Direct Debit unit rates run from 25.10 p/kWh in East Midlands to 27.66 p/kWh in North Wales and Mersey, while standing charges run from 44.78 p/day in London to 70.76 p/day in North Wales and Mersey. These are dated rate endpoints, not calculated bill amounts.
What does the sourced evidence say about input × formula × dated rate?
Input: user-entered charging kWh and, only if incremental, charged days. Formula: kWh × selected regional unit rate, plus incremental days × selected regional standing charge. Dated rate: the chosen payment-method row effective 2026-07-01 to 2026-09-30. The region name remains visible in the expanded amount.