Energy tariffs with free electricity Sundays (UK)
Compare whole-of-market Sunday free electricity tariffs and other smart deals for your home. Tell us a few details and we’ll match you with the most suitable options for your usage and meter type.
- Whole-of-market comparison for UK households
- Check eligibility for “free electricity Sunday” style offers
- See if a smart meter, EV, or heat pump makes it worthwhile
- Fast form fill — no obligation to switch
EnergyPlus.co.uk is a UK home energy comparison service. Availability of Sunday free electricity tariffs varies by supplier, region, meter type and time.
Find UK energy tariffs with free electricity on Sundays
“Free electricity Sundays” tariffs (sometimes promoted as zero-rate electricity for a set Sunday time window) can be appealing if you can shift a meaningful chunk of your usage into that period — for example EV charging, tumble drying, dishwashing, batch cooking, or heating hot water.
But the headline “free” doesn’t automatically mean cheaper overall. Many of these deals are paired with a higher unit rate at other times or a specific structure (like time-of-use pricing). The best option depends on your household’s consumption pattern, your meter type (smart meter vs standard), and how flexible you can be on Sundays.
Whole-of-market approach: EnergyPlus compares a wide range of UK home energy tariffs, including time-of-use options and “free electricity Sunday” style promotions where available. Fill in the form and we’ll surface suitable matches based on your details.
What you’ll get after submitting
- Confirmation of whether Sunday free electricity tariffs are available for your postcode region and meter setup
- Alternatives if you’re not eligible (e.g., off-peak overnight tariffs for EVs)
- A clear explanation of trade-offs (peak vs off-peak rates, standing charge, conditions)
Compare tariffs — quick form
Tell us where you are and how to reach you. We’ll use this to check availability and share your best next steps.
Prefer to research first?
Jump to how Sunday free electricity tariffs work or see FAQs for common pitfalls (like time windows, caps and higher peak rates).
Note: Energy tariffs, prices and promotions can change. We’ll always encourage you to review the supplier’s latest tariff information and key terms before switching.
Why consider a free electricity Sunday tariff?
These tariffs can work well for households that can plan their energy use. The value is highest when your biggest electricity loads can be moved into the Sunday “free” window and you avoid shifting usage into expensive peak times.
Potential savings for flexible homes
If you can reliably move high-usage tasks to Sundays, you may reduce your weekly electricity spend — especially in homes with EV charging, electric showers, or lots of appliance use.
Simple routine: “Sunday energy day”
Batch your laundry, dishwasher cycles, home cooking and hot water top-ups into the free window. A routine helps you capture value without constant monitoring.
Works alongside smart tech
Smart plugs, timers, and EV charge scheduling can automate Sunday usage. Many households combine a Sunday offer with off-peak charging on other days.
Best fit: households with a smart meter and flexible demand typically get the most benefit. If you can’t shift usage, a standard fixed tariff can sometimes be better overall.
How “free electricity Sundays” tariffs work in the UK
In the UK, “free electricity Sunday” is usually a tariff feature or promotion rather than a universal discount. The supplier sets a specific time window on Sundays where the electricity unit rate may be £0/kWh (or effectively free) — but only under the tariff’s rules.
Typical features to look for
- Fixed Sunday window (e.g., daytime hours)
- Smart meter requirement (to measure half-hourly usage)
- Unit rates outside Sunday may be higher than a standard tariff
- Standing charge still applies (even on “free” days)
- Caps/limits (sometimes promotions limit free usage)
What EnergyPlus checks for you
- Whether suppliers offering Sunday deals serve your postcode region
- Whether you’re likely to need a smart meter or compatible setup
- If an alternative (like EV overnight off-peak) would be cheaper
- Any key restrictions to be aware of before switching
Quick comparison: Sunday free vs other common tariff types
| Tariff type | Best for | Watch-outs |
|---|---|---|
| Free electricity Sunday | Homes that can shift large loads to a Sunday window | Higher rates on other days/times; may require smart meter; terms can change |
| EV / time-of-use | EV owners wanting cheap overnight charging | Peak periods can be expensive; needs scheduling discipline |
| Fixed rate | Households wanting predictable pricing | May not reward flexibility; exit fees can apply |
| Variable (SVT) | People who want flexibility and no exit fees | Price can change; not usually the best value for high users |
3-step process to see if it’s worth it
- Estimate Sunday shiftable usage: identify what you can move into the free window (EV charging, laundry, dishwasher, cooking, immersion heater).
- Compare the rest-of-week rates: check the standard unit rate(s), peak periods, and standing charge.
- Choose a plan you can stick to: the best tariff is the one you’ll actually use correctly week after week.
Tip: If your household is busiest on Sundays (cooking, family time), you may naturally use more electricity then — which can make a Sunday free window more valuable, provided the rest-of-week rates remain competitive.
Costs, savings and what to check before you switch
A Sunday free electricity tariff can reduce costs, but only when the overall structure suits your household. Use the checklist below to avoid the common “it sounded great” trap.
Savings checklist
- Standing charge: this is paid daily regardless of usage.
- Non-Sunday unit rates: compare against a good fixed tariff for your region.
- Time windows: “Sunday free” usually applies to specific hours, not the full day.
- Usage caps: check if free usage is limited.
- Exit fees: some fixed deals charge for early exit.
Households that often benefit
- EV owners: schedule charging during the free window where compatible.
- High electricity usage homes: larger families, frequent laundry and cooking.
- Smart home users: automation helps maintain savings with minimal effort.
- Hybrid strategy: Sunday free + another cheap off-peak period can be strong.
| Question to ask | Why it matters | What to do |
|---|---|---|
| Is it really free at £0/kWh, and for how long? | “Free” is usually limited to a set window. | Plan high-load tasks inside the hours. |
| What are the rates outside Sunday? | This determines your true annual cost. | Compare with a strong fixed tariff in your region. |
| Do I need a smart meter? | Half-hourly measurement often required. | Check your setup and installation timelines. |
| Are there limits, exclusions, or “fair use” rules? | Some deals have caps or restrictions. | Review the tariff information label and terms. |
Want a quick sense-check? Use the comparison form and we’ll guide you towards the most suitable tariff type — Sunday free, EV off-peak, or a strong fixed rate.
Eligibility: can you get free electricity on Sundays?
Eligibility varies by supplier and tariff. Even if a deal is advertised nationally, your ability to access it can depend on your meter type and where you live.
Smart meter
Many Sunday offers rely on half-hourly readings. If you don’t have a smart meter, you may need to get one installed before the tariff can apply.
Regional availability
UK electricity regions can affect pricing and availability. Your postcode helps confirm whether a supplier can offer the tariff where you are.
Payment & account setup
Some tariffs are designed for direct debit and online account management. It’s important to check payment method requirements and any credit checks.
If you’re not eligible: we’ll still help you compare strong alternatives, such as competitive fixed tariffs or time-of-use deals that prioritise cheap overnight electricity.
FAQs: Sunday free electricity tariffs
Is electricity actually free on Sundays?
Usually it’s free (or £0/kWh) only within a defined time window. Your standing charge still applies, and electricity outside that window is billed at the tariff’s normal rate(s).
Do I need a smart meter for Sunday free tariffs?
Often, yes. Many time-based promotions require half-hourly readings to apply the free period correctly. If you don’t have one, you may be offered an installation.
Can I charge an EV during the free window?
If you have an EV and home charger, you can often schedule charging for Sundays. However, always confirm the exact Sunday hours, any caps, and whether your charger scheduling aligns with the tariff window.
Could my bills go up even with a free Sunday?
Yes. If your weekday/peak rates are higher and you don’t shift enough consumption into the free window, the tariff may cost more overall than a good fixed deal.
Are Sunday free tariffs available everywhere in the UK?
Availability can vary by supplier and sometimes by region. Your postcode helps confirm what’s currently on offer where you live.
Can I get a Sunday deal on dual fuel (gas + electricity)?
Some suppliers offer electricity-only time-of-use promotions, while others offer dual fuel bundles. We’ll compare what’s available and show you whether bundling is good value.
Still unsure? Submit the quick form and we’ll help you decide whether a Sunday free electricity tariff is likely to suit your home energy usage.
Why households use EnergyPlus
Whole-of-market comparisons
We look across a wide range of UK home energy tariffs and structures, including time-of-use options and Sunday free promotions where available.
Clear trade-offs explained
We focus on what matters: rates outside the free window, standing charges, and the behavioural changes needed to benefit.
Designed for UK homes
Postcode-based matching helps account for regional differences and supplier coverage, keeping results relevant to your household.
Customer feedback
“The Sunday-free idea sounded great but I didn’t know what to check. EnergyPlus helped me compare it properly against a fixed tariff and I picked the one that actually fit our usage.”
— Homeowner, South East
What we prioritise
- Transparent guidance on suitability and eligibility
- No-pressure recommendations based on your details
- Focus on home energy (not business tariffs)
Ready to check Sunday free electricity tariffs for your postcode?
Use our quick form to see if “free electricity Sundays” style tariffs are available for your home — and whether they beat a strong fixed or EV off-peak deal.
- Whole-of-market comparison
- Home energy only
- Fast, no-obligation enquiry
Start here: jump back to the form and submit your details in under 60 seconds.
You’ll receive guidance on eligibility, trade-offs and next steps. Tariffs and terms vary by supplier and can change.
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