Compare UK Heat Pump & EV Electricity Tariffs With Smart Meter Data
See what you would pay on every major UK tariff - Standard, Economy 7, Time of Use and dynamic - based on your real half-hourly usage. Built for heat pump and EV households where tariff choice makes the biggest difference.
How It Works
1. Register
Create a free account and set your DNO region to see tariffs in your area.
2. Connect Smart Meter
Free, no hardware - link your smart meter via the Bright app and your half-hourly usage updates automatically.
3. Compare
See what you'd pay on each tariff based on your actual usage pattern.
4. Save
Switch to the best deal - or stay confidently on your current tariff.
Connecting Your Smart Meter Is Free
Skip the CSV export entirely. Link your existing UK smart meter via the free Bright app from Hildebrand (built on the Glowmarkt platform) and we'll pull your half-hourly usage automatically. No new hardware, no manual exports, no spreadsheets - and it's especially useful for heat pump and EV households where getting the tariff choice right matters most.
- Works with SMETS1 and SMETS2 smart meters across all 14 UK DNO regions
- Reads electricity (and gas too, if you want the context)
- Updates daily once linked - your comparison stays continually fresh
- Read-only access - we never send anything back to your meter
Compared to uploading a CSV every few months, an active Bright link keeps your tariff comparison accurate as suppliers change rates and your usage shifts season to season.
Get Started FreeHow the smart meter link works
- Download the free Bright app (iOS / Android) or visit Glowmarkt on the web and sign up with your smart meter MAC address.
- Allow up to 24 hours for Glowmarkt to start pulling half-hourly data from your meter.
- Register here, then link your Bright credentials in your profile - takes about a minute.
- Your comparison starts running automatically against every Standard, Economy 7, Time of Use and dynamic tariff we track.
Tariff Types We Compare
A single unit rate for all electricity used, 24 hours a day.
Separate day and night rates with a customisable night window.
Multiple rate bands throughout the day - peak, off-peak and more.
Half-hourly rates that change with the grid, like Octopus Agile. Can go negative.
Tariffs We Compare
We track live rates across 7 suppliers and 39 tariffs across all 14 UK DNO regions.
British Gas
2 tariffs tracked across all UK regions
EDF
9 tariffs tracked across all UK regions
Eon Next
6 tariffs tracked across all UK regions
Good Energy
4 tariffs tracked across all UK regions
Octopus
16 tariffs tracked across all UK regions
- Agile Octopus October 2024 v1
- Cosy Octopus 12M Fixed June 2026 v1
- Cosy Octopus 12M Fixed March 2026 v1
- Cosy Octopus 12M Fixed March 2026 v2
- Cosy Octopus 12M Fixed Sep 2024
- Cosy Octopus 6M Fixed March 2026
- Cosy Octopus Variable
- Flexible Octopus
- Intelligent Octopus Go 12M Fixed June 2026 v1
- Octopus 12M Fixed June 2026 v8
- Octopus Go 12M Fixed June 2026 v1
- Octopus Tracker April 2026 v1
- Octopus Tracker July 2024 v1
- Octopus Tracker September 2025 v1
- Snug Octopus
Price Cap 
ScottishPower Rates are fetched automatically from supplier APIs and updated daily.
Tariffs by Region
Standing charges and rates vary between the 14 UK DNO regions. Pick yours to see the best heat pump and EV tariffs available there.
Especially Useful for Heat Pump & EV Households
Heat pumps and electric vehicles can add 5,000-15,000 kWh per year to your electricity bill - far above the typical UK household average of around 3,500 kWh. At that consumption level, even a small difference in unit rate makes a very significant difference to your annual bill.
Many households with heat pumps benefit from smart tariffs like Octopus Agile (dynamic half-hourly pricing) or Time of Use tariffs, where cheap overnight rates can be exploited by scheduling your heat pump or EV charging to run during off-peak periods. But whether that's actually true for your home depends on your specific usage pattern - which is exactly what this tool analyses.
Upload your smart meter data and we'll calculate your exact cost on every available tariff based on when you actually use electricity - not a generic estimate.
Why tariff choice matters more at higher consumption
| Household type | Typical annual kWh |
|---|---|
| Average UK household | ~3,500 kWh |
| EV owner (avg mileage) | ~5,500-6,500 kWh |
| Heat pump (3-bed home) | ~8,000-12,000 kWh |
| Heat pump + EV | ~13,000-18,000 kWh |
A 1p/kWh saving on a 15,000 kWh household is worth £150/year. The right tariff choice can save considerably more.