Cheapest electricity tariff for night owls in the UK
If you use more power late evening or overnight, a multi‑rate tariff (like Economy 7) can be cheaper than a standard single‑rate tariff — but only if your usage pattern fits. This guide explains how to check, what to avoid, and how to compare safely.
- See when “night rate” is actually cheaper (and when it isn’t)
- Work out if your meter supports off‑peak pricing (Economy 7/10, smart meters)
- Compare tariffs by your real night/day split — not headline rates
Estimates only. Tariffs, eligibility and off‑peak hours vary by supplier, region, meter type and payment method.
Fast answer: what’s usually cheapest for night-time electricity?
There isn’t one single “cheapest night owl tariff” for everyone in the UK. In practice, the cheapest option depends on your off‑peak hours, your meter type, where you live (distribution region), and how much of your electricity you use at night.
Often cheapest if…
- You can shift ~35–45%+ of usage into off‑peak
- You charge an EV overnight or run storage heaters
- Your supplier offers a strong off‑peak unit rate (not just a low headline)
Usually not cheapest if…
- Most use is daytime (WFH, cooking, laundry at lunchtime)
- You have Economy 7 but don’t use storage heating/EV
- Your day rate is high and wipes out any night savings
Quick checks
- Look for two unit rates on your bill: Day and Night
- Confirm off‑peak times (they vary)
- Compare using annual cost for your actual usage split
Important: “Night rate” isn’t always a fixed time (and it isn’t always 7 hours). Economy 7 times can shift by region and can be affected by clocks changing. Always confirm the exact hours for your meter and supplier before switching.
Compare night‑rate tariffs (whole of market) in minutes
Tell us a few details and we’ll match you to tariffs that fit your meter and usage pattern. If you’re not sure whether you’re Economy 7/10, include what you can — we’ll guide you.
What you’ll need (if you have it)
- Your postcode (to price your local network costs)
- Approx. annual usage (kWh) or a recent bill
- Whether you have a smart meter / Economy 7 / prepayment
- Rough night vs day usage split (estimate is fine)
Prefer to read first? Jump to how to choose the right night tariff or see our comparison table.
Get your night‑rate quote
We’ll use your details to provide estimated tariff options. Submitting doesn’t lock you into a switch.
Tip for night owls: If you don’t know your day/night split, start with a simple estimate (for example, 70% day / 30% night). We’ll explain how to refine it before you switch.
How to choose the cheapest night tariff (without getting caught out)
Night‑rate tariffs can be great value — but only when you compare using the right inputs. Here’s the approach we recommend for UK households.
1) Confirm your meter & tariff type
- Economy 7
- Two rates (day/night), usually 7 off‑peak hours. Common with storage heaters and some flats.
- Economy 10
- Less common; 10 off‑peak hours split across day/night in some areas.
- Smart time‑of‑use (TOU)
- Rates may vary by time and can change over time. Often best for EV charging if you can schedule it.
2) Get your real day/night usage split
- Best: read both registers on your meter (day + night) and compare over a few days or a month.
- Good: use annual kWh from a bill showing both rates.
- OK to start: estimate based on habits (e.g., EV charging, tumble dryer, dishwasher, immersion heater timings).
Rule of thumb: Economy 7 tends to start making sense when you can reliably push around 40%+ of your electricity into off‑peak. It varies by tariff prices and standing charges.
3) Compare using annual cost, not just unit rates
A night tariff can show an eye‑catching low off‑peak unit rate, but you’ll often pay a higher day rate (and sometimes a different standing charge). The only fair comparison is:
- Standing charge × 365
- Day unit rate × your day kWh
- Night unit rate × your night kWh
4) Check the UK-specific “gotchas”
- Off‑peak hours vary by region and meter set‑up (ask the supplier to confirm).
- Payment method: tariffs can differ for Direct Debit vs prepayment.
- Metering limits: some tariffs require a smart meter; Economy 7 requires a compatible meter.
- Exit fees: fixed tariffs may charge if you leave early.
Two realistic examples (with numbers)
These examples are simplified to show the maths. Prices vary by supplier, region, and change over time. Standing charges are shown to highlight the impact on annual cost.
Scenario A: Late-night gamer + dishwasher after 11pm
- Total use: 3,100 kWh/year
- Night share: 30% (930 kWh night, 2,170 kWh day)
- Single-rate tariff: 26p/kWh, standing charge 55p/day
- Economy 7 tariff: 15p night, 30p day, standing charge 55p/day
Result: Economy 7 is only slightly cheaper here. A small change in rates/standing charge could flip the outcome.
Scenario B: EV charging overnight (big night usage)
- Total use: 4,600 kWh/year
- Night share: 55% (2,530 kWh night, 2,070 kWh day)
- Single-rate tariff: 26p/kWh, standing charge 55p/day
- Economy 7 tariff: 12p night, 32p day, standing charge 55p/day
Result: with high night usage, Economy 7 can be materially cheaper even when the day rate is higher.
Caveat: These scenarios use example rates to demonstrate the calculation. Your cheapest option may be a different multi‑rate product (including smart TOU) depending on local availability, whether you pay by Direct Debit, and your meter configuration.
Night owl tariff types compared (UK)
Use this table to narrow down which tariff type is most likely to suit your household before you compare quotes.
| Tariff type | How pricing works | Best for | Watch-outs |
|---|---|---|---|
| Single‑rate | One unit rate all day + standing charge. | Most homes with mainly daytime use. | No benefit for shifting load to night. |
| Economy 7 | Two unit rates: day (higher), night (lower) for ~7 off‑peak hours. | EV charging, storage heating, heavy late-night usage. | Off‑peak hours vary; day rate can be much higher; not always best if night use is low. |
| Economy 10 | Two/three off‑peak blocks totalling ~10 hours (area-dependent). | Some legacy heating set‑ups needing daytime off‑peak boosts. | Limited availability; switching suppliers can be trickier; confirm meter support first. |
| Smart TOU | Prices vary by time window; may have ultra‑low overnight periods. | EV owners and tech-savvy households able to schedule appliances. | Can be complex; some rates vary; may require smart meter and specific billing set‑up. |
Decision checklist: does a night tariff suit you?
- Yes, if you can reliably run big loads overnight (EV, immersion, storage heating, laundry).
- Yes, if you can avoid expensive day-rate peaks (cook earlier, schedule dishwasher, avoid daytime tumble drying).
- Maybe, if you’re out during the day (low daytime kWh) and can shift usage.
- No, if you mainly use power during the day and overnight use is modest.
Best next step
If you’re unsure, compare both a standard single‑rate tariff and an Economy 7/TOU tariff using the same annual usage. That way you’re not guessing.
Compare night‑rate quotesCosts, exclusions and common pitfalls (night tariffs)
These are the main reasons night owls end up paying more than expected — and what to check before committing.
Off‑peak hours aren’t universal
Economy 7 times depend on your meter’s configuration and your area. Ask your supplier to confirm the exact off‑peak window(s) for your supply.
Day rates can be much higher
If you can’t shift enough usage, the higher day unit rate can outweigh savings from the cheap night unit rate.
Standing charges still matter
Even with a great night rate, a higher standing charge can erode the benefit — especially for low‑usage flats.
Exit fees and fixed terms
Some fixed night tariffs have exit fees if you leave before the end date. That matters if:
- you may move home soon
- you’re testing Economy 7 for the first time
- you expect your usage to change (e.g., EV purchase, new job hours)
Meter & billing compatibility
- Economy 7 requires a dual‑rate meter (or smart meter configured for multi‑rate).
- Some TOU tariffs require a working smart meter and half‑hourly reads.
- Prepayment: tariff choice may be more limited and priced differently.
Safety note: If you’re shifting usage to overnight, avoid running high-heat appliances unattended if the manufacturer advises against it. Consider timers and smart plugs with overload protection where appropriate.
FAQs: cheapest night electricity tariffs (UK)
What time is “night rate” in the UK?
It depends on your meter and region. Economy 7 is typically 7 hours overnight, but the exact times vary and can shift with clock changes. Always confirm your specific off‑peak hours with your supplier or meter documentation.
Is Economy 7 always the cheapest for night owls?
No. Economy 7 is only likely to be cheaper if enough of your usage happens in off‑peak hours. If most of your electricity use is daytime, the higher day rate can make it more expensive than a single‑rate tariff.
How do I know if I’m already on Economy 7?
Check your bill for two electricity unit rates (often labelled Day/Night or Rate 1/Rate 2) and two meter readings. You may also have a dual‑register meter. If unsure, your supplier can confirm your meter set‑up.
Can I get a night-rate tariff with a smart meter?
Often yes. Many suppliers can offer multi‑rate or time‑of‑use tariffs with smart meters, but availability varies. Some products require smart meter readings at specific intervals and may not be available everywhere.
Do night tariffs work for tenants and flats?
They can. Flats with storage heating have often been set up for Economy 7 historically. However, tenants should check their tenancy conditions, whether they can change supplier, and whether the meter is accessible for readings (if needed).
Will switching affect my off-peak times?
Usually your meter’s off‑peak schedule stays the same, but billing labels and how rates are applied can differ. Always ask the new supplier to confirm the off‑peak window(s) they will bill as “night”.
What if I’m on prepayment (PAYG)?
Night‑rate options may be more limited on prepayment and priced differently. You can still compare, but it’s especially important to check eligibility, meter compatibility, and any costs to change meter type (if applicable).
How can I increase my night usage safely to benefit from off‑peak?
Use built‑in delayed start features (dishwasher/washer) where appropriate, schedule EV charging, and time immersion or storage heating controls correctly. Avoid running appliances unattended if the manufacturer guidance says not to.
Trust, methodology and sources
Page governance
- Written by: EnergyPlus Editorial Team
- Reviewed by: Energy Specialist
- Last updated: June 2026
How we assess “cheapest for night owls”
We focus on estimated annual cost based on a user’s electricity usage and tariff structure — rather than headline night unit rates. When we compare, we consider:
- Meter compatibility: single‑rate vs Economy 7/10 vs smart TOU eligibility
- Pricing components: standing charge + day unit rate + night unit rate (or time windows)
- Practical fit: the user’s likely day/night split and ability to shift load
- UK constraints: region (network area), payment method, and tariff terms (including exit fees)
Limitations: Supplier pricing changes, availability varies by postcode and meter type, and some TOU tariffs have variable rates. Always check the supplier’s tariff information (including off‑peak hours) before you switch.
Useful UK sources
- Ofgem (energy regulator) — guidance on energy markets and consumer protections.
- Citizens Advice: Energy — help with bills, switching, and supplier issues.
- GOV.UK: Energy information — government information and schemes.
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