Energy tariffs with free electricity Sundays in the UK
Compare whole-of-market tariffs that include “free electricity on Sundays” style perks (where available), plus smarter alternatives like EV, off-peak and tracker deals—then switch with EnergyPlus in minutes.
- Check if a free electricity Sunday offer is available for your postcode
- See the real cost: standing charge, peak unit rates and T&Cs
- Get matched to time-of-use, EV and smart tariffs that may save more overall
Whole-of-market comparison for UK homes. Availability varies by supplier, meter type and region. Always check tariff terms before switching.
Compare energy tariffs with free electricity Sundays (and similar offers)
“Free electricity Sundays” tariffs are a type of promotional energy deal where the supplier offers a zero unit rate (or a heavily discounted rate) during a defined window on Sundays. These deals can be great if you can move flexible usage—like washing, tumble drying, batch cooking, dishwashing or EV charging—into the free window.
However, the rest of the week may be priced higher (or have a higher standing charge). That’s why EnergyPlus compares the whole-of-market and helps you judge whether a “free Sunday” deal is genuinely good value for your household’s usage pattern.
Tip: If you have a smart meter, you can usually benefit most from time-based offers. If you don’t, we’ll show you tariff types that still fit—like fixed deals with competitive unit rates and standing charges.
What you’ll see when you compare
- Whether a Sunday free electricity style tariff is available for your region
- Estimated annual cost based on typical usage (or your figures if you have them)
- Key terms: free window times, unit rates outside the window, standing charge, exit fees
- Alternatives that can outperform “free Sunday” deals, including EV/time-of-use tariffs
Get personalised results
Tell us a few details and we’ll match you to the best options for your home—including Sunday-free and smart tariffs where available.
Quick check: If you don’t have a smart meter, “free Sunday” tariffs may be unavailable or less accurate. Don’t worry—our results include strong fixed and variable options too.
Why people look for free electricity Sundays
Make weekends cheaper
If you run energy-hungry appliances at home on Sundays, a free window can lower the cost of those specific hours—especially if you can batch tasks.
Ideal for flexible households
Households that can time-shift usage (families, home workers, EV owners) can benefit more than those with fixed daily routines.
Pair with smarter habits
Used alongside smart plugs, appliance timers and meter insights, the offer can encourage better energy habits without affecting comfort.
Compare beyond the headline
“Free” can be offset by higher weekday rates. Comparing whole-of-market helps you avoid paying more overall for a perk you barely use.
Potential EV charging value
If the free window aligns with your charging routine, it can be useful. But many EV tariffs offer cheaper overnight rates across more days.
No need to guess
EnergyPlus can help estimate whether you’d benefit based on your home, meter type and likely consumption pattern.
How “free electricity Sundays” tariffs work (in plain English)
Suppliers market these as free Sunday electricity, but the details matter. Typically, there is a specific weekly time window on Sundays where your electricity unit rate is set to 0p/kWh (or discounted). Outside that window, you’ll pay standard peak rates, plus a daily standing charge.
- Eligibility check: Many time-based offers require a smart meter that can record half-hourly usage. Without one, the supplier may not be able to apply “free hours” correctly.
- Free window defined: The tariff specifies which hours on Sunday qualify. Only electricity used within that window is free/discounted; the rest is charged normally.
- Billing: Your bill shows usage across the week at different rates. The “free” part appears as 0 unit charge for eligible consumption (or as a credit).
- Exit fees and terms: Some deals are fixed-term with exit fees; others are variable. Always review tariff information before switching.
What to look for before you switch
The “free” window timings
Is it all day Sunday or a limited block? If it’s limited, can your usage realistically shift into those hours?
Peak unit rates on other days
Some tariffs price weekday electricity higher. A high weekday rate can erase the Sunday benefit.
Standing charge
A higher standing charge increases costs regardless of how much electricity you use on Sundays.
Gas pricing (if dual fuel)
The electricity perk may distract from a poor gas rate. Compare dual fuel totals, not just electricity.
Will a free electricity Sunday tariff actually save you money?
It depends on how much electricity you can shift into the free window and how the rest of the tariff is priced. A simple way to think about it is: Sunday savings must be greater than any extra cost you pay on other days (or via a higher standing charge).
Practical example: If you can shift only a small amount of usage to Sundays, a tariff with lower everyday rates can cost less over the year—even without any “free” hours.
Eligibility: who can get free electricity on Sundays?
Availability varies by supplier, region and meter setup. In general, you’re more likely to be eligible if you have:
A smart meter (recommended)
- Enables half-hourly readings needed for time-based pricing
- More accurate billing for “free hour” windows
- Makes it easier to track Sunday usage changes
A compatible home setup
- Standard domestic supply (not business)
- Ability to shift usage (appliance timers, flexible routine)
- Optional: EV charger or heat pump (can increase benefit if aligned)
Regional considerations across Great Britain
Electricity standing charges and unit rates vary by distribution region across England, Scotland and Wales. Some niche promotional tariffs may also be limited by region. When you compare with EnergyPlus, we match tariffs to your postcode to ensure you’re seeing what you can actually switch to.
Northern Ireland: energy markets operate differently. If you’re in NI, tell us and we’ll guide you to the right options available for your area.
Common mistakes when choosing a “free Sunday electricity” tariff
Focusing on the perk, not the total cost
The cheapest tariff is the one with the lowest annual cost for your usage—not necessarily the one with the best headline offer.
Not checking the free window times
Some deals offer only a limited block. If your routine doesn’t fit, the free hours won’t be used.
Ignoring standing charge differences
A higher standing charge can cancel out savings, particularly for flats, smaller households and lower consumption homes.
Overestimating how much you’ll shift
Real savings come from consistent habits. Be realistic about how often you’ll run appliances during the free window.
Forgetting gas (dual fuel homes)
If you use gas for heating and hot water, a poor gas rate can outweigh electricity savings.
Missing better alternatives
EV and off-peak tariffs can provide multiple cheap periods per week—sometimes delivering bigger savings than one free day.
FAQs: free electricity Sundays tariffs (UK)
Are free electricity Sunday tariffs genuinely free?
The unit rate in the defined Sunday window may be 0p/kWh (or discounted), but you still pay your standing charge and any consumption outside the window. Some tariffs may have higher rates at other times, so it’s important to compare the overall annual cost.
Do I need a smart meter for Sunday free electricity?
In many cases, yes. Smart meters allow suppliers to measure usage by time window. If you don’t have a smart meter, you may still find good value on fixed tariffs or standard variable options depending on the market.
Can I get free electricity Sundays with Economy 7?
Economy 7 is a separate structure with day and night rates, typically designed for night storage heating. A “free Sunday” offer is usually a smart time-of-use tariff. EnergyPlus can show the best fit for your meter type and usage.
What appliances are best to run during the free Sunday window?
High-consumption tasks you can safely schedule: washing machine, tumble dryer, dishwasher, batch cooking, and EV charging (if compatible). Avoid unsafe practices and never run appliances unattended if the manufacturer advises against it.
Will switching affect my supply?
No—your gas and electricity keep flowing as normal. Switching is an administrative change. You’ll usually just need to provide meter readings (unless you have a smart meter sending readings automatically).
What if no free Sunday tariffs are available in my area?
We’ll still show you competitive alternatives—like EV/off-peak deals, fixed rates, or other smart tariffs—so you can choose the best value option for your home.
Want a quick answer for your address? Use the form above and we’ll show what’s available for your postcode.
Why households use EnergyPlus
Whole-of-market approach
We focus on what’s best for your home—comparing across tariff types, not just one headline offer.
Clear, UK-specific guidance
We explain standing charges, unit rates and time windows in plain English so you can choose confidently.
Support through the switch
From eligibility checks to next steps, we help you move to the right tariff without hassle.
“I was set on a free Sunday tariff, but EnergyPlus showed me an off-peak deal that worked out cheaper overall for our usage.”
UK homeowner, comparison customer
“The explanation about standing charges and the Sunday window was exactly what I needed. Switching was straightforward.”
UK homeowner, tariff switcher
Ready to see Sunday-free tariffs (and cheaper alternatives) for your home?
Submit your details to get personalised results for your postcode. We’ll show you what’s available and help you choose based on total annual cost—not just the “free” headline.
Home energy only. Tariffs and promotions change; we’ll confirm current availability for your address.
What you’ll need
- Your postcode
- Optional: latest bill or usage
- Whether you have a smart meter
Back to Energy News