Compare energy tariffs with free electricity on Sundays (UK)
Find whole-of-market home energy deals that offer free electricity on Sundays (or similar off-peak rewards). Tell us a few details and EnergyPlus will help you compare eligible tariffs and estimated savings.
- Whole-of-market comparison for UK homes (not business)
- See if “free Sunday” style tariffs fit your usage and meter type
- Support for EV-friendly, time-of-use and smart meter tariffs
- Switching help and clear next steps
Free electricity offers vary by supplier and usually apply to specific times, eligibility rules and fair use limits. We’ll show what’s available for your postcode and meter.
Compare UK “free electricity Sunday” energy tariffs
Some UK suppliers now offer reward-style energy tariffs where electricity is free during a set Sunday window (or discounted at selected off-peak times). These deals can be ideal if you can shift usage to Sundays — for example EV charging, laundry, batch cooking, or running appliances like dishwashers and immersion heaters.
EnergyPlus compares the whole-of-market for home energy and helps you identify whether a “free Sundays” style tariff is genuinely good value once you account for:
- Unit rates outside the free window (often higher on some reward tariffs)
- Standing charges (daily fees that can make a big difference)
- Time-of-use rules (the exact free hours, fair use and any caps)
- Meter requirements (smart meter / compatible meter configuration)
Tip: If your household can move even 15–30% of weekly electricity use into the free Sunday window, these tariffs can be competitive — especially for EV owners. If most of your usage is weekday daytime, a standard fixed or other time-of-use tariff may be better.
Already know your meter type? Jump to eligibility checks to avoid common switching mistakes.
Get your comparison (home energy)
Complete the form and we’ll match you to eligible tariffs (including Sunday-free offers where available for your area and meter).
Looking for EV-friendly charging?
This page focuses on Sunday-free style offers, but we’ll also consider smart EV tariffs, overnight off-peak rates, and other time-of-use deals where suitable.
Need help understanding your current tariff first? Jump to how “free Sundays” work and costs & savings before you switch.
Why compare Sunday-free electricity tariffs?
A tariff with free electricity on Sundays can be a great fit — but only when the full pricing structure matches your real-life usage. Here’s what most households gain from comparing properly.
Shift heavy usage to Sundays
Plan laundry, tumble drying, dishwasher cycles, batch cooking, or EV top-ups in the free window to reduce weekly electricity costs.
Avoid false savings
Some reward tariffs offset freebies with higher unit rates or standing charges. A comparison checks your whole bill, not just the headline offer.
Find alternatives that suit you
If Sundays don’t match your routine, a fixed tariff or a different time-of-use plan (overnight/weekday off-peak) could be better value.
Whole-of-market coverage
EnergyPlus compares across the market for UK households, so you can check multiple suppliers and tariff types in one place.
Better fit for smart meters
Most free-window tariffs need smart readings for accurate billing. We’ll help you understand whether your meter setup supports it.
Simple switching support
If you decide to proceed, switching is typically handled by suppliers with minimal disruption and no interruption to supply.
How “free electricity Sundays” tariffs work
In the UK, these tariffs are usually a type of time-of-use plan with a zero unit rate for electricity within a specific Sunday window. Outside the window, standard unit rates apply. The exact terms can differ across suppliers, but most follow the same structure.
A defined free window on Sundays
The supplier sets the hours (for example, daytime or evening). Only electricity used within those hours is free — timing matters.
Smart readings allocate usage by time
Your meter needs to record when electricity is used so the supplier can apply the free rate correctly. This is why many of these deals are aimed at smart meter households.
Rates outside Sunday may be higher
To fund the free period, some tariffs have higher peak unit rates or standing charges. The best choice depends on how much you can shift.
Fair use and eligibility rules apply
Suppliers may include fair use provisions and may limit the offer to certain meter types, regions, or payment methods.
Quick check: If you mostly use electricity during weekday evenings (cooking, heating water, tumble dryer), a Sunday-free deal can still work — but you’ll want a tariff where the non-Sunday unit rate stays competitive.
Eligibility: who can get free electricity on Sundays?
Availability depends on your supplier’s offer rules and your home’s setup. Use this checklist before you switch so you don’t end up on a tariff that doesn’t match your meter or lifestyle.
You’re likely eligible if…
- You have a smart meter (or can have one fitted) that supports time-of-use billing
- You can shift usage into the Sunday free window (even partially)
- You’re on a domestic supply (this page is for home energy only)
- Your property is in a region where the tariff is offered
Watch outs to check first
- Legacy meters or restricted meters may not support time-banded pricing
- Economy 7 / Economy 10 setups may require careful comparison (you might already have cheap off-peak)
- Some offers require Direct Debit or specific billing preferences
- If you can’t use electricity on Sundays, the tariff may cost more overall
Not sure what meter you have?
If you can see a digital display that cycles through readings and may show “SMETS” information, it’s likely smart. If in doubt, submit the form and we’ll help confirm what you’re on and what tariffs are compatible in your postcode.
Costs & savings: is a free Sunday tariff actually cheaper?
The headline “free electricity on Sundays” can be valuable — but savings depend on what you pay the rest of the week. A proper comparison focuses on your annual cost estimate based on usage patterns.
Rule of thumb: The more electricity you can reliably move into the free Sunday window (EV charging, laundry days, meal prep), the more likely the tariff helps. If your usage is mostly weekday peak times, the higher standard rate could outweigh the free period.
What to compare (not just the free hours)
| Comparison factor | Why it matters | What to look for |
|---|---|---|
| Standard unit rate (Mon–Sat + outside window) | This is what you pay most of the time. | Competitive p/kWh relative to other fixed and variable tariffs. |
| Standing charge | Paid daily regardless of use. | Low standing charge helps if you’re a lower-usage household. |
| Free window times | Your savings depend on being able to use power during those hours. | A window that matches your routine (e.g., daytime home time). |
| Fair use limits | Some suppliers may restrict excessive usage in free periods. | Clear terms and reasonable household use expectations. |
| Exit fees & contract | A fixed contract may charge if you leave early. | Understand term length, early exit fees, and renewal pricing. |
Simple ways to maximise the free Sunday window
EV charging
Schedule charging within the free window (if supported by your charger/app) and avoid weekday peak top-ups where possible.
Laundry & drying
Run washing, tumble drying and dishwashers back-to-back on Sunday rather than spreading across the week.
Hot water & cooking
Batch cook meals for the week and heat water when free if your system allows safe scheduling.
Common mistakes when choosing a free Sunday energy tariff
Mistake: switching for the headline only
A zero-rate Sunday window is only part of the bill. Always compare standing charge and the standard unit rate for the rest of the week.
Mistake: not checking meter compatibility
Time-of-use billing usually needs smart meter readings. If your meter can’t support it, you may not receive the intended pricing.
Mistake: underestimating weekday peak use
If most of your electricity is used on weekday evenings, a higher standard rate can outweigh the free period. Estimate how much you can shift.
Mistake: ignoring contract terms
Check tariff length, exit fees, and what happens at the end of the term so you don’t roll onto a higher rate unintentionally.
Want the quick route? Use the comparison form and we’ll help identify suitable deals for your postcode and usage profile.
FAQs: free electricity on Sundays (UK)
Is electricity really free on Sundays?
On eligible tariffs, electricity can be billed at a 0p/kWh rate during a defined Sunday time window. You’ll still normally pay a daily standing charge, and you’ll pay the standard unit rate outside the free window.
Do I need a smart meter for a free Sunday tariff?
Often, yes. Because the supplier needs to know when you used electricity to apply the free rate, a smart meter (or compatible meter setup) is commonly required. Availability can vary by supplier and region.
Are free Sunday tariffs good for EV charging?
They can be, especially if you can do a meaningful charge on Sundays. However, some EV drivers get better value from overnight off-peak tariffs depending on mileage, charger scheduling and weekday needs. We’ll consider both in your comparison.
Will switching interrupt my electricity supply?
No — switching supplier should not interrupt supply. The physical network remains the same; only billing and tariff terms change.
Can I get free electricity Sundays on a prepayment meter?
Some tariffs are limited to Direct Debit customers, and eligibility can vary for prepayment meters. If you submit your details, we’ll check what’s available for your situation and postcode.
What if my Sunday routine changes?
If you can’t use the free window consistently, you may be better on a competitive fixed tariff. Consider contract terms and any early exit fees before committing.
How quickly can I see my comparison results?
Once you submit the form, we’ll use your postcode and contact details to help you compare eligible deals and discuss the best match for your household setup.
Not found what you need? Use the comparison form and ask about Sunday-free tariffs, EV tariffs and time-of-use options.
What customers like about EnergyPlus comparisons
When you’re switching tariffs with special conditions (like free Sunday windows), clarity matters. Here are examples of feedback themes we hear from households using comparison support.
“The Sunday-free tariff sounded great, but EnergyPlus helped me check the standing charge and weekday rates first. I switched with confidence.”
Homeowner • England
“We’ve got an EV and needed something that works with our smart meter. The comparison explained which tariffs were actually compatible.”
EV driver • Scotland
“Clear explanation, no waffle. The free hours were only part of the story — the annual estimate made the decision simple.”
Family household • Wales
Trust points: Whole-of-market approach • UK home energy focus • Tariff terms explained clearly • Support through the switching journey
Ready to check if free electricity Sundays will save you money?
Submit your details and we’ll compare eligible UK home energy tariffs — including Sunday-free offers and other time-of-use options that may better suit your household.
- Works for renters and homeowners (with the bill payer’s consent)
- Postcode-based availability and meter checks
- Clear next steps for switching
Start your comparison
We’ll help you compare home energy tariffs. Offers and eligibility vary by supplier and region.
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