EDF Economy 7 tariff rates and night hours (UK guide)
Economy 7 can cut costs if you use a good chunk of electricity overnight — but the “night hours” depend on your meter, not the supplier. Here’s how EDF Economy 7 rates are structured, how to find your off-peak window, and how to check if it suits your home before you switch.
- How EDF Economy 7 day/night prices work (without guessing live rates)
- How to check your actual night hours on your meter or bill
- Two realistic usage examples to sanity-check the maths
Rates and hours vary by meter, region and payment method. Use your bill/meter for your exact timings and our quote for live prices.
Fast answer: EDF Economy 7 tariff rates and night hours
EDF Economy 7 tariff rates and night hours mean you pay two electricity unit rates: a cheaper night (off-peak) rate for about seven hours, and a higher day (peak) rate the rest of the time. The exact night hours are set by your meter’s switching times (often region-based), not by EDF, so you must check your own meter or bill.
Most important thing to know
Your off-peak window can shift with BST/GMT and meter type. Don’t assume “12:30–7:30”. Confirm it.
Quick rule of thumb
Economy 7 tends to suit homes that can shift a meaningful share of electricity to overnight (storage heating, EV charging, immersion heater on a timer).
What you need to check
Meter type, payment method, and whether your usage split (day vs night) is realistic for your household routine.
We can’t show EDF’s live Economy 7 unit rates on this page because prices vary by postcode, meter setup and how you pay. Use the quote to see today’s exact day/night unit rates and standing charge for your home.
How EDF Economy 7 tariff rates are structured
Economy 7 is a time-of-use setup with two electricity registers (or two readings shown on one meter). Your bill is usually made up of:
- Day unit rate
- The higher price for electricity used outside the off-peak window.
- Night unit rate
- The lower price for electricity used during your meter’s off-peak hours (around seven hours total).
- Standing charge
- A daily fee that covers network costs and metering/admin. It still applies on Economy 7.
EDF’s Economy 7 pricing can differ by region (your local electricity network), payment method (direct debit vs prepayment) and meter type (traditional Economy 7 vs smart meter configured for two rates). That’s why the only reliable way to see your actual numbers is to price it for your postcode.
Check live EDF Economy 7 prices for your home
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EDF Economy 7 night hours: what they usually look like (and why they vary)
People often say “Economy 7 is midnight to 7am”. In practice, Economy 7 off-peak hours are controlled by the meter’s timing and the local network’s setup. That means two homes on EDF can have different night hours even on the same tariff type.
Common patterns you might see
Many Economy 7 meters provide roughly seven off-peak hours overnight. Some are a single block; others split the hours (for example, a short late-evening slot plus an early-morning slot). Your meter decides the switch, not the supplier’s customer service script.
BST/GMT can catch people out
Some older meters don’t change with the clocks. That can make the off-peak window appear to “move” by an hour when the UK goes into British Summer Time, even though the meter’s internal schedule hasn’t changed.
If you’ve got storage heaters or an immersion heater, the exact switching times matter. A one-hour mismatch can mean your “cheap” heating is actually running on the day rate.
How to find your exact off-peak times (reliable methods)
1) Check your meter display
Many Economy 7 meters show two readings labelled something like “Rate 1” and “Rate 2”. Note which one changes overnight by taking a reading late evening and then again early morning. If you’re unsure, take a photo of the display at both times.
2) Use your bill (if it shows time bands)
Some bills show the day/night register names and may include a note about “off-peak” or “night” usage. It doesn’t always list the exact hours, but it helps confirm which register is which.
3) Ask your meter operator (not just your supplier)
If you’re stuck, EDF (or any supplier) can sometimes confirm the configured times, but the underlying setup is linked to your meter and network. If support gives a generic window, treat it as a hint, not proof.
If you’ve got a smart meter, the off-peak switching can be configured remotely for two-rate billing, depending on your tariff and meter setup. If your smart meter is currently single-rate, you may need the tariff and the meter configuration to match before you’ll see two readings.
Economy 7 vs single-rate electricity: what changes
The decision isn’t “is the night rate cheap?” It’s whether your overall bill goes down after the higher day rate is applied to everything you do in daytime.
| Feature | Economy 7 (two-rate) | Single-rate (flat) |
|---|---|---|
| Unit rates | Two prices: day + night | One price all day |
| Best for | Homes that can shift heavy loads overnight (storage heating, EV charging, immersion heater) | Most homes with typical daytime/evening usage |
| Meter readings | Two registers (or two readings on a smart meter) | One register |
| Risk | If you don’t use enough at night, the higher day rate can outweigh the cheaper hours | Less sensitive to timing; easier to understand |
| Control needed | Medium to high (timers, habits, charging schedules) | Low |
Decision checklist (quick, but honest)
- You can run high-usage appliances overnight (dishwasher, washing machine) safely and quietly.
- You have storage heaters or an immersion heater you can time to off-peak.
- You charge an EV at home and can schedule charging.
- You can tolerate some admin: knowing your off-peak times and checking which register you’re billed on.
Who it often doesn’t suit
If most of your usage is 4pm–10pm (cooking, showers, tumble dryer, heat), Economy 7 can be awkward unless you’ve got a big overnight load to balance it.
Also, if your home is on electric heating but it’s panel heaters (not storage), you may not benefit much because you’ll still need heat in the day at the day rate.
Two realistic scenarios (with numbers you can reuse)
These examples use made-up prices (not EDF’s live rates). They’re here so you can test your own day/night split. Replace the unit rates with the live figures you get from your quote.
Scenario A: EV driver with timed charging (often suits Economy 7)
Assumptions: 3,600 kWh/year electricity. 45% used overnight (EV charging + appliances). Example unit rates: day 35p/kWh, night 15p/kWh.
Estimated unit-cost part of bill: (1,980×35p) + (1,620×15p) = £693 + £243 = £936/year (standing charge not included).
Scenario B: Typical daytime/evening household (often better on single-rate)
Assumptions: 3,100 kWh/year electricity. 15% used overnight. Example unit rates: day 35p/kWh, night 15p/kWh.
Estimated unit-cost part of bill: (2,635×35p) + (465×15p) = £922.25 + £69.75 = £992/year (standing charge not included).
These scenarios don’t “prove” a tariff is cheaper because single-rate prices can be lower than the Economy 7 day rate, and standing charges vary too. They’re useful for one thing: checking whether your overnight share is big enough to matter.
Costs, exclusions and common Economy 7 pitfalls
Most Economy 7 problems come down to timing, meter readings, or assumptions made during a switch. Here are the ones we see most.
Pitfall: wrong register billed as “night”
If Rate 1/Rate 2 are mixed up on your account, you can be charged the day price for night usage (or the other way round). Take dated photos of readings and query it quickly.
Pitfall: off-peak hours shift with the clocks
Older meters may not follow BST/GMT. If your heater timer follows the clock but the meter doesn’t, your “cheap” schedule can drift.
Pitfall: using too little overnight
Economy 7 can punish daytime-heavy households because the day unit rate is often higher than a comparable single-rate tariff. Your usage split matters more than your total kWh.
Exit fees and fixed terms
Some fixed tariffs across the market include exit fees. Always check the tariff details shown on your quote before you commit, especially if you may move home soon.
Prepayment and Economy 7
Economy 7 on prepay exists, but availability and pricing can differ. If you’re on prepay, check quotes specifically for your meter type rather than assuming you can move to any offer.
Storage heaters need the right controls
If you’ve got storage heaters, make sure the charging circuit is actually fed by the off-peak supply (some setups use a separate timeswitch). If you’re not sure, an electrician can confirm.
If you suspect you’ve been billed incorrectly, Citizens Advice explains how to complain to your supplier and escalate if needed.
FAQs
What are EDF Economy 7 night hours?
EDF Economy 7 night hours are the off-peak times your meter switches to the cheaper “night” unit rate for roughly seven hours. The exact hours vary by meter configuration and region, and some meters split the hours. The reliable way to know yours is to check your meter readings across the changeover.
Does EDF set the Economy 7 hours?
Not directly. The switching times are determined by your meter’s setup (and sometimes the local network’s arrangements). Your supplier bills you based on the readings recorded in each register, but the meter controls when it records “day” versus “night”.
How do I know which Economy 7 rate is day and which is night on my meter?
Take a reading in the evening and again early morning. The register that increases overnight is your night/off-peak register. If your bill labels them as “Rate 1/Rate 2”, don’t assume Rate 1 means night — it varies — use the readings to confirm.
Can I switch to Economy 7 if I don’t have an Economy 7 meter?
You usually need a compatible meter configuration to be billed on two rates. If you’re on a single-rate meter, you may need a meter exchange or a smart meter configuration change, depending on what’s installed. Your quote results and supplier will tell you what’s possible for your address.
Is EDF Economy 7 cheaper than a normal tariff?
It depends on your day/night split and the live prices available for your postcode. Economy 7 gives a cheaper night rate but often a higher day rate, so it can be cheaper for overnight-heavy homes and more expensive for daytime-heavy homes. Use a whole-of-market quote to compare properly.
Do Economy 7 hours change in British Summer Time?
They can appear to. Some meters adjust automatically; others keep the same internal schedule all year, which makes the off-peak window look one hour different when the clocks change. If your heaters or EV charger are scheduled by clock time, re-check after the clock change.
What if I think my Economy 7 readings are being billed the wrong way round?
Take clear photos of both registers with timestamps (even a phone screenshot of the time helps), then contact your supplier and ask them to confirm which register is billed as day and which as night. If you can’t resolve it, follow the formal complaints process and escalate as needed.
Can tenants get Economy 7 and switch supplier?
Most tenants can choose the energy supplier as long as they pay the bills, though your tenancy may have rules about changing the meter itself. If your home already has an Economy 7 meter, you can usually compare Economy 7 tariffs without changing any hardware.
Trust, how we assess this, and our sources
Page details
Written by: EnergyPlus Editorial Team
Reviewed by: Energy Specialist
Last updated: September 2026
How we assess Economy 7 (and the limits)
We focus on what stays true even when prices move: how two-rate billing works, what sets the off-peak window, and how to sanity-check the day/night split using your own usage habits. Where we use numbers (the two scenarios), they’re clearly labelled as examples and not a promise of any supplier’s rates.
Limitations: we don’t publish live EDF unit rates, standing charges, night-hour windows, tariff names or exit fees here because those can change and vary by postcode, payment method and meter type. EnergyPlus shows live, personalised prices in the quote results.
Useful UK sources (independent)
- Ofgem: check if the energy price cap affects you (for how the cap works and what it covers)
- Citizens Advice: energy (billing issues, switching help, complaints)
- GOV.UK: switch energy supplier (practical switching basics)
Price cap placeholders used across EnergyPlus: typical annual bill £1,663; electricity unit rate cap 26.11p/kwh; electricity standing charge cap 57.19p/day. Your actual tariff may be above or below these depending on your deal and circumstances.
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