Cheapest night rate electricity tariffs for UK homes
Find low overnight electricity rates for homes with the right meter and usage pattern. Compare whole-of-market options and see if an off-peak tariff is actually cheaper for you.
- Best suited to homes that can shift a meaningful share of electricity to off-peak hours (e.g., EV charging, heat pump, storage heaters)
- We explain eligibility (smart meter vs Economy 7/10) and common traps like higher day rates
- Get an estimated quote with your postcode and current usage details
Estimates depend on your meter, region, payment method and how much electricity you actually use overnight. Terms and rates change regularly.
Fast answer: what’s the cheapest night rate tariff?
There isn’t one single “cheapest night rate” for every UK home. The lowest off-peak unit rate typically depends on your region, meter type (smart meter vs Economy 7/10), payment method (Direct Debit vs prepayment), and the tariff’s day rate and standing charge.
Practical rule of thumb: A night-rate tariff only tends to work out cheaper if you can reliably shift a meaningful portion of your electricity use into the off-peak window (often 25%+, sometimes more if the day rate is much higher). We show examples below.
Key takeaways (UK homes)
Cheapest night rate ≠ cheapest bill
Suppliers can offer a low off-peak rate but a higher day rate/standing charge. Always compare the estimated annual cost for your usage split.
Meter & timing matter
Economy 7 has 7 off-peak hours (timings vary by region/meter). Smart tariffs may have different windows, and some require half-hourly readings.
Eligibility can exclude some homes
Prepayment options can be limited; EV tariffs may require an EV; some tariffs are only available with a working smart meter.
Compare the cheapest night-rate options for your home
Tell us your postcode and how we can contact you. If you know your current tariff type (single-rate, Economy 7/10, or smart), include it when we call or email—this helps us match you to eligible night-rate plans.
Tip: If you have a smart meter, your supplier may be able to offer smart off-peak tariffs. If you have an Economy 7 meter, you’ll typically be looking at two-rate tariffs with fixed off-peak hours.
How night-rate electricity tariffs work (UK)
- You pay two (or more) unit rates
- Most night-rate tariffs have a day rate and an off-peak (night) rate. Some smart tariffs have multiple off-peak periods.
- Standing charge still applies
- You’ll still pay a daily standing charge. In some regions/tariffs, standing charges can be higher than a standard single-rate tariff.
- Your off-peak hours depend on the tariff and meter
- Economy 7 off-peak times can vary by area and meter settings (often overnight, sometimes split). Smart tariffs define specific windows and may use half-hourly data.
Get your estimate (whole-of-market)
What to compare when hunting for the cheapest night rate
If you search only for the lowest off-peak unit price, you can accidentally choose a tariff that increases your overall bill. Use the table below to compare like-for-like.
| Compare item | Why it matters | What to check | Good sign |
|---|---|---|---|
| Off-peak unit rate | This is the ‘night rate’ you’re targeting. | What hours count as off-peak? Is it fixed? Is it split across the day? | Longer, predictable off-peak window you can actually use. |
| Day/peak unit rate | Often higher than standard tariffs to ‘fund’ the cheaper night rate. | How much higher is it than your current rate? | Peak rate not dramatically higher, or you can avoid using much electricity at peak times. |
| Standing charge | Affects every household, even low users. | Compare to your current tariff and your region’s typical level. | Standing charge in line with standard tariffs in your area. |
| Meter requirement | Some tariffs require a smart meter (and half-hourly readings). | Do you have a smart meter? Economy 7/10? Single-rate? | Eligibility is clear and matches your current set-up (or a realistic upgrade path). |
| Payment method | Direct Debit tariffs can differ from prepayment options. | Is the deal available for your payment type? | You’re comparing the same payment method across tariffs. |
| Exit fees & contract length | A low night rate can come with restrictions. | Any early exit fee? Fixed term? How will price changes be handled? | Clear terms; exit fees proportionate to the benefit. |
Decision checklist: is a night-rate tariff right for you?
Usually suits you if…
- You can shift a predictable chunk of use overnight (e.g., EV, heat pump optimisation, dishwasher/washing machine timers).
- You have (or can get) the right meter for the tariff (Economy 7/10 or smart meter depending on product).
- You’re comfortable planning high-load activities around off-peak hours.
- Your home’s electricity demand is higher than average, especially overnight (e.g., EV charging at home).
Often not worth it if…
- You’re a low electricity user (standing charge and peak rate can dominate total cost).
- Your household uses most electricity during the day/evening (home working, electric cooking, tumble dryer in evenings).
- You can’t control when you use electricity (shared accommodation, unpredictable schedules).
- You’re on prepayment and options are limited (availability varies by supplier and region).
Costs, exclusions and common pitfalls (UK)
Night-rate tariffs can be excellent for the right households, but they’re also easy to misbuy. These are the issues we see most often when people chase the “cheapest night rate”.
1) Day rate is much higher
A very low night rate can be paired with a steep day rate. If you can’t shift enough usage, your total bill may rise.
2) Off-peak hours don’t match your routine
Economy 7 timing can vary (and may change with clock adjustments). Smart tariffs have set windows—check you can actually use them.
3) Standing charges in your region
Standing charges vary across Great Britain and by tariff. A higher standing charge hits low users hardest.
4) Meter & switching complexity
Moving from Economy 7 to single-rate (or the other way) can require meter reconfiguration. Not all suppliers will do this quickly.
5) Eligibility requirements (EV / smart)
Some EV-focused tariffs require an eligible EV or charger, and many smart tariffs require half-hourly readings.
6) Exit fees and fixed terms
A cheap off-peak rate may come on a fixed deal with exit fees. Factor this in if you might move or change usage.
Important: Off-peak tariffs are not a way to “beat” prices if your usage stays mostly daytime/evening. The key is aligning your kWh timing with the cheaper window.
Two realistic examples (with numbers)
These examples are illustrative only. Rates vary by supplier, region and time. We’re using simple round figures to show the trade-off between night rate and day rate.
Scenario A: EV driver who charges overnight
Assumptions: 4,200 kWh/year electricity. Off-peak share: 45% (EV + timers). Standing charge assumed equal on both tariffs for simplicity.
| Tariff | Rates used | Estimated annual unit cost |
|---|---|---|
| Single-rate | 30p/kWh (all hours) | 4,200 × 30p = £1,260 |
| Night-rate | 40p day / 12p night | (2,310 × 40p) + (1,890 × 12p) = £1,151 |
Result: despite a higher day rate, the large overnight share makes the night-rate tariff estimated ~£109/year cheaper (excluding standing charge differences).
Scenario B: Typical household with little overnight use
Assumptions: 2,900 kWh/year electricity. Off-peak share: 15% (some timers). Standing charge assumed equal on both tariffs for simplicity.
| Tariff | Rates used | Estimated annual unit cost |
|---|---|---|
| Single-rate | 30p/kWh (all hours) | 2,900 × 30p = £870 |
| Night-rate | 40p day / 12p night | (2,465 × 40p) + (435 × 12p) = £1,038 |
Result: the household doesn’t use enough overnight, so the higher day rate makes the bill estimated ~£168/year more expensive (excluding standing charge differences).
Reality check: standing charge differences, regional pricing and actual off-peak windows can change the outcome. Use a personalised comparison based on your meter and usage split.
FAQs: cheapest night rate electricity (UK)
1) What counts as a “night rate” tariff in the UK?
Typically it means a tariff with a cheaper unit rate during set off-peak hours (often overnight). Common examples include Economy 7 (two-rate meter) and smart off-peak tariffs that use half-hourly readings and defined cheap windows.
2) What time is Economy 7 night rate?
Economy 7 provides 7 cheaper hours, usually overnight, but the exact times can vary by region and meter configuration. Some meters have split periods. Check your bill, your meter’s times, or ask your supplier for your specific off-peak window.
3) Do I need a smart meter for the cheapest night rates?
Not always. Economy 7/10 can work without a smart meter if you already have a multi-rate meter. However, many of the newest off-peak tariffs are smart tariffs that require a working smart meter and may require sharing half-hourly consumption data.
4) Is a night-rate tariff good for electric heating?
It can be. Traditional storage heaters were designed to charge up overnight on Economy 7. For heat pumps, it depends on your home, controls and how much heating you can shift to off-peak without losing comfort. Compare using your real usage (or a realistic overnight shift estimate).
5) Are night-rate tariffs available for prepayment meters?
Sometimes, but availability can be more limited than Direct Debit tariffs and varies by supplier, region and meter type. If you’re on prepayment and want off-peak rates, it’s especially important to check eligibility before switching.
6) Can I switch from Economy 7 back to a normal single-rate tariff?
Often yes, but it may require your supplier (or new supplier) to reconfigure or replace your meter depending on how it’s set up. Timelines and feasibility vary. If you’re unsure, we recommend comparing using your existing meter first and checking whether a meter change is needed.
7) How do I know what percentage of my electricity is used at night?
If you have a smart meter and access to half-hourly data through your supplier’s app/portal, you can estimate your overnight share. With Economy 7, your bill often shows separate day and night kWh. If you can’t access this, use a practical estimate (e.g., EV charging kWh overnight + appliances on timers) and test sensitivity (20%, 30%, 40%).
8) Does the “Energy Price Cap” mean I can’t find cheaper night rates?
The Ofgem price cap limits the level of default tariffs (like Standard Variable) for typical consumption profiles. Suppliers can still offer fixed deals and smart/off-peak tariffs with different structures. Your best option depends on your usage pattern and eligibility.
Trust, methodology and sources
How we assess “cheapest night rate” tariffs
- Whole-bill focus: We prioritise estimated annual cost for your likely usage split (day vs off-peak), not just the lowest night unit rate.
- UK-specific eligibility checks: Meter type (single-rate, Economy 7/10, smart meter), payment method, and any product requirements (e.g., EV-linked tariffs).
- Regional sensitivity: Electricity rates and standing charges vary by distribution region, so postcode-level matching is essential.
- Terms and risk: We consider exit fees, contract length, and whether off-peak windows are practical and clearly defined.
Assumptions and limitations
- Rates change frequently: Any “cheapest” claim can become outdated quickly; always confirm the current unit rates, standing charge and dates.
- Off-peak times aren’t universal: Economy 7 timings can differ; smart tariffs may have changing or multiple windows. Check the tariff’s terms and your meter settings.
- Standing charge differences matter: Our examples simplified standing charge to focus on unit-rate trade-offs. Your real outcome may differ.
- Not financial advice: We provide an energy comparison and editorial guidance; you should make the final decision based on your circumstances and the tariff information.
Sources (UK)
- Ofgem (Great Britain energy regulator) – price cap, switching and consumer protections
- Citizens Advice: Energy – billing, meters and switching support
- GOV.UK – general consumer guidance and official services
Ready to check the cheapest night rate for your postcode?
We’ll match you with eligible night-rate tariffs and show the trade-off between off-peak rates, day rates and standing charges—so you can decide with confidence.
Back to Energy Suppliers