Best heat pump & EV electricity tariffs in South Wales

We track 277 active electricity tariffs from 8 suppliers across the South Wales DNO region, operated by National Grid Electricity Distribution. This page is rebuilt daily (last rebuilt ).

Picks below are curated for heat pump and EV households, who typically benefit most from Time-of-Use and dynamic tariffs that reward off-peak consumption. For a personalised result, upload your half-hourly smart meter data and we'll compare every South Wales tariff against your actual usage pattern.

Best for heat pump households in South Wales

Tariffs with off-peak windows or dynamic pricing that reduce the cost of running a heat pump overnight or outside peak hours.

Good Energy

Good Energy Heat Pump April 2026

Time of Use Fixed

Off-peak 13.33p / Peak 29.07p

Standing charge: 57.57p/day

Rates checked by hand

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Good Energy

Good Energy Heat Pump Fixed 12m Oct26

Time of Use Fixed

Off-peak 16.00p / Peak 34.24p

Standing charge: 60.46p/day

Rates checked by hand

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Good Energy

Good Energy Heat Pump Jan 2026

Time of Use Fixed

Off-peak 12.38p / Peak 22.84p

Standing charge: 57.17p/day

Rates checked by hand

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Good Energy

Good Energy Heat Pump June 2026

Time of Use Fixed

Off-peak 13.33p / Peak 29.07p

Standing charge: 57.57p/day

Rates checked by hand

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Good Energy

Good Energy Heat Pump Mar 2026

Time of Use Fixed

Off-peak 12.38p / Peak 23.91p

Standing charge: 57.17p/day

Rates checked by hand

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Octopus

Cosy Octopus 12M Fixed June 2026 v1

Time of Use Fixed

Off-peak 14.17p / Peak 43.34p

Standing charge: 53.87p/day

Rates updated daily

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Octopus

Cosy Octopus 12M Fixed March 2026 v1

Time of Use Fixed

Off-peak 12.98p / Peak 46.57p

Standing charge: 50.21p/day

Rates updated daily

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Octopus

Cosy Octopus 12M Fixed March 2026 v2

Time of Use Fixed

Off-peak 14.04p / Peak 49.82p

Standing charge: 52.25p/day

Rates updated daily

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Octopus

Cosy Octopus 12M Fixed October 2026 v1

Time of Use Fixed

Off-peak 15.35p / Peak 46.93p

Standing charge: 55.19p/day

Rates updated daily

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Octopus

Cosy Octopus 12M Fixed October 2026 v2

Time of Use Fixed

Off-peak 15.60p / Peak 47.67p

Standing charge: 55.19p/day

Rates updated daily

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Octopus

Cosy Octopus 12M Fixed September 2026 v1

Time of Use Fixed

Off-peak 15.02p / Peak 45.95p

Standing charge: 54.36p/day

Rates updated daily

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Octopus

Cosy Octopus 12M Fixed September 2026 v2

Time of Use Fixed

Off-peak 14.42p / Peak 44.10p

Standing charge: 54.36p/day

Rates updated daily

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Octopus

Cosy Octopus 6M Fixed March 2026

Time of Use Fixed

Off-peak 12.10p / Peak 43.88p

Standing charge: 48.08p/day

Rates updated daily

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ScottishPower

Heat Pump Saver Apr 2027 v1

Time of Use Fixed

Off-peak 13.33p / Peak 29.76p

Standing charge: 45.32p/day

Rates checked by hand

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ScottishPower

Heat Pump Saver Oct 2027 v2

Time of Use Fixed

Off-peak 14.00p / Peak 31.93p

Standing charge: 52.31p/day

Rates checked by hand

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ScottishPower

Heat Pump Saver Sep 2027 v1

Time of Use Fixed

Off-peak 13.33p / Peak 32.00p

Standing charge: 55.08p/day

Rates checked by hand

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Best for EV households in South Wales

Tariffs with deep overnight off-peak windows, ideal for scheduled EV charging at home.

Octopus

Intelligent Octopus Go 12M Fixed June 2026 v1

Time of Use Fixed

Off-peak 7.62p / Peak 32.26p

Standing charge: 53.87p/day

Rates updated daily

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Octopus

Intelligent Octopus Go 12M Fixed June 2026 v1 - EV Saver

Time of Use Fixed

Off-peak 6.67p / Peak 32.26p

Standing charge: 53.87p/day

Rates updated daily

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Octopus

Intelligent Octopus Go 12M Fixed October 2026 v1

Economy 7 Fixed

Day 37.06p / Night 7.60p

Standing charge: 54.36p/day

Rates updated daily

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Octopus

Intelligent Octopus Go 12M Fixed October 2026 v1 - EV Saver

Economy 7 Fixed

Day 37.06p / Night 6.60p

Standing charge: 54.36p/day

Rates updated daily

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Octopus

Intelligent Octopus Go 12M Fixed October 2026 v2

Economy 7 Fixed

Day 39.30p / Night 8.00p

Standing charge: 57.79p/day

Rates updated daily

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Octopus

Intelligent Octopus Go 12M Fixed October 2026 v2 - EV Saver

Economy 7 Fixed

Day 39.30p / Night 7.00p

Standing charge: 57.79p/day

Rates updated daily

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Octopus

Intelligent Octopus Go 12M Fixed October 2026 v3

Economy 7 Fixed

Day 38.90p / Night 7.90p

Standing charge: 54.63p/day

Rates updated daily

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Octopus

Intelligent Octopus Go 12M Fixed October 2026 v3 - EV Saver

Economy 7 Fixed

Day 38.90p / Night 6.90p

Standing charge: 54.63p/day

Rates updated daily

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Octopus

Intelligent Octopus Go 12M Fixed September 2026 v1

Economy 7 Fixed

Day 33.21p / Night 7.62p

Standing charge: 53.87p/day

Rates updated daily

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Octopus

Intelligent Octopus Go 12M Fixed September 2026 v1 - EV Saver

Economy 7 Fixed

Day 33.21p / Night 6.67p

Standing charge: 53.87p/day

Rates updated daily

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Octopus

Intelligent Octopus Go 12M Fixed September 2026 v3

Economy 7 Fixed

Day 36.66p / Night 8.00p

Standing charge: 54.36p/day

Rates updated daily

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Octopus

Intelligent Octopus Go 12M Fixed September 2026 v3 - EV Saver

Economy 7 Fixed

Day 36.66p / Night 7.00p

Standing charge: 54.36p/day

Rates updated daily

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Octopus

Intelligent Octopus Go 12M Loyal Fixed October 2026 v1

Economy 7 Fixed

Day 35.70p / Night 6.60p

Standing charge: 54.36p/day

Rates updated daily

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Octopus

Intelligent Octopus Go 12M Loyal Fixed September 2026 v1

Economy 7 Fixed

Day 35.76p / Night 6.60p

Standing charge: 54.36p/day

Rates updated daily

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Standing charges by supplier in South Wales

The daily fixed fee you pay before any energy use. Suppliers are sorted cheapest first. A range is shown where a supplier offers multiple tariffs at different standing charges.

Supplier Cheapest Highest Tariffs
Eon Next 33.40p 63.93p 112
ScottishPower 45.32p 55.08p 3
Octopus 47.43p 62.06p 99
EDF 47.43p 125.80p 52
British Gas 48.57p 56.88p 4
100Green 54.63p 54.63p 1
Price Cap 55.41p 55.41p 1
Good Energy 57.17p 60.46p 5

What households in South Wales are saving

We need data from at least 5 households in South Wales before we can publish an average. Be one of the first - sign up and upload your smart meter data to contribute (anonymously) and to see your own personal saving figure.

Frequently asked questions about tariffs in South Wales

South Wales is served by National Grid Electricity Distribution, the Distribution Network Operator responsible for electricity distribution in this part of the UK. Your DNO is set by where you live; you cannot change DNO, but you can choose your electricity supplier freely from any company that serves this region.

Each of the 14 UK DNO regions has its own network distribution costs, set by Ofgem. These costs are passed through to suppliers, who reflect them in the unit rates and standing charges shown on your bill. Two identically-named tariffs from the same supplier can cost different amounts depending on which region you live in - so it always pays to compare using rates specific to your postcode.

Yes. Octopus Energy actively supplies customers in South Wales. Heat-pump-friendly tariffs such as Cosy Octopus and Octopus Agile, and the EV-focused Intelligent Octopus Go, all have published rates for this region. Eligibility for individual products (such as Intelligent Octopus Go) may still depend on having a compatible smart meter and EV charger.

At the time of the latest update, the lowest published standing charge in South Wales was 33.40p/day from Eon Next. Standing charges are paid every day regardless of how much energy you use, so a low standing charge particularly benefits low-consumption households.

A heat pump needs only about a third of the energy a gas boiler uses for the same heat, but it is all electricity, so your electricity use goes up a lot and the unit rate you pay matters a great deal. On a flat-rate standard tariff, savings depend heavily on insulation and how efficiently the heat pump is run. Time-of-Use tariffs such as Cosy Octopus, or dynamic tariffs such as Octopus Agile, are usually cheaper for heat pump households because they let you draw most of your electricity during off-peak periods.

Tariffs with a daily supplier feed are updated every day; the others are checked by hand when the supplier publishes new prices. Each tariff card says which. The most recent rate change recorded for South Wales is dated 7 Nov 2026. Dynamic tariffs (such as Octopus Agile and Tracker) publish new rates every day; their headline numbers shown here are illustrative off-peak figures rather than fixed prices.

Methodology & data freshness

How we curate picks

Heat pump and EV picks are drawn from the active tariffs we track in South Wales, filtered to products designed for those use cases (Cosy Octopus, Agile, Tracker, Intelligent Octopus Go, E.ON Next Drive, EDF FreePhase Static and similar). The summary rates shown are the headline off-peak figure where applicable - they are not a complete description of every band or condition. Click through to compare with your own usage to see the true cost.

Data freshness

Rate data on this page reflects a snapshot generated on . The most recent rate change recorded for South Wales is dated 7 Nov 2026. Standing charges and unit rates come from supplier publications. Tariffs with a daily supplier feed are updated every day; the others are checked by hand when the supplier publishes new prices. Dynamic tariffs (Octopus Agile, Tracker, EDF FreePhase Dynamic) publish new rates every day; headline figures shown here are illustrative off-peak values.