Extra half-price electricity with PeakSave

We’re now running PeakSave Gold Sundays and Super Saturdays as we all cheer on Team GB and Paralympics GB at the Paris 2024 Olympic Games.

Let the Games (and savings) begin!

Join PeakSave

What are PeakSave Gold Sundays and Super Saturdays?

In the run up to the Paris 2024 Olympic Games, we’re giving our PeakSavers more ways to save money.

From 28th July until 8th September, we’re running PeakSave Gold Sundays, where you get half-price electricity1 from 9am to 5pm. That’s an extra three hours on top of our usual Sundays!

Plus, on 3rd August and  7th September we’re also throwing in two special PeakSave Super Saturdays during the Games, with the same half-price electricity from 9am to 5pm.1

During these events, you can use as much electricity as you need from 9am to 5pm.

How to take part

To save money with PeakSave Gold Sundays and Super Saturdays you’ll need to:

Be a British Gas customer

You can only join PeakSave if you get your electricity from British Gas. We'd love you to join us and getting a quote is simple.

Get a quote

Have a smart electricity meter

Booking your free installation is simple. Just log in to your account and see if there's an upgrade invitation. If not, check back regularly.

Log in to your account

Join PeakSave

Register your interest in PeakSave and we’ll be in touch once everything’s ready.

Join PeakSave

How do PeakSave Gold Sundays and Super Saturdays work?

There will be half-price electricity events throughout the Paris 2024 Olympic Games this summer.1

Before each Gold Sunday or Super Saturday, we’ll send an email reminder so you can power up your savings.

Use as much electricity as you need from 9am to 5pm – it’s all half-price!

On your marks

Already a PeakSaver? Then you’re all set. If not, register for PeakSave and we’ll let you know when everything’s up and running.

Get set

You don’t need to do anything to take part - we’ll automatically include you in every PeakSave Gold Sunday and Super Saturday. We’ll also send you an email reminder.


On PeakSave Gold Sundays and Super Saturdays, use as much half-price electricity as you need from 9am to 5pm.1

Everyone wins

Your smart meter will tell us how much you used, and we'll work out your credit.

When will I receive my PeakSave credit?

After each event, we’ll credit half of what you spent back to your account. Your payment for Gold Sundays will show up as a 'PeakSave Sunday Credit', and Super Saturdays will appear as a ‘Peak Save Bonus Credit’ on your next bill or online statement.

It’ll normally appear within two weeks of each event ending.

If you prepay for your electricity

Your credit will be automatically added to your meter each month - normally within 10 working days after the month ends.

And each month, we’ll email you a summary of how much you’ve saved.

Weekly prize draw – win big!

PeakSaver prize draw

Win exclusive prizes to celebrate our partnership with Team GB and ParalympicsGB.

  • Only PeakSavers get to play! This is your exclusive chance to grab a prize.
  • A prize draw every week, for eight weeks.
  • Five prize bundles each week! There are plenty of goodies to go around.

Don't miss out! Enter now for your chance to win.

Enter now

PeakSave Gold Sunday and Super Saturday benefits

Save money

Any electricity you use during the events is half price.1

Helping the planet

You’re powering your home when there’s likely to be lots of renewable energy available.

Shine a light on your energy use

Better understanding of which appliances use the most electricity in your home.

PeakSave Tips

During PeakSave events, any electricity you use is half price so if you can, it’s worth waiting until an event to put those big appliances to work.1

So, on your marks, get set and start saving...

Catch up on chores

Big appliances like washing machines and dishwashers use the most electricity. Put them through their paces and get everything clean for half the price.1

Half-price feasts – prep, freeze and save

Electric ovens and other kitchen gadgets also use a lot of power. Use half-price electricity for cooking or prepping meals in one go. Just pop the rest in the freezer ready for the week, and you’re good to go.

Put your green fingers to work

Electric mowers and other garden tools can be pretty power-hungry too, so it’ll pay to do a quick lap of honour mowing the lawn.

Want to be a PeakSave superstar? Check out our energy-saving tips to help you find out which appliances use the most energy.

Frequently Asked Questions

What are peak hours for using electricity?

Peak electricity hours tend to be in the morning when people are getting ready to head out to work and school and, in the evening, when they’re returning and making evening meals. Therefore, electricity use peaks at around 7am to 11am and then again from 5pm to 9pm.

Some energy tariffs allow consumers to save money by using electricity at off-peak hours. However, consumers on standard flat-rate or fixed energy tariffs pay the same for their electricity regardless of the time of day they use it.

Learn more about peak and off-peak electricity.

I signed up for PeakSave but haven't heard anything yet. What’s going on?

Thank you for signing up. It takes us a while to complete all our checks to make sure you're eligible and everything is ready. We'll let you know when we've completed these. It could take up to 10 days, so please bear with us.

How will you know how much electricity I use during PeakSave events and how will you calculate my credit?

Your smart meter will tell us. When you signed up to PeakSave, you agreed to let us take a smart meter reading every 30 minutes during PeakSave events so we can see exactly how much electricity you’re using.

During PeakSave events, any electricity you use is half price. You’ll pay for the electricity you use as normal, then we’ll credit your account or meter back with half of what you spent. You’ll pay your daily standing charge at your normal rate. This will not be discounted.

The amount you earn will depend on your energy tariff, unit rate and how much electricity you use during the events.

For every event, we multiply the number of units of electricity you use during the event (kWh) by 50% of your tariff unit rate after VAT (p/kWh).

For example:

  • You’re a customer on our Standard Variable Tariff with an electricity unit rate of 33.21p/kWh (after VAT)
  • 50% of your unit rate is 16.61p/kWh (after VAT)
  • You use 5 kWh of electricity during the event
  • 5 kWh x 16.61p/kWh = 83.05p
  • Your credit for taking part is 83p

In this example, you’ll pay £1.66 for the electricity you use during the event. But because electricity is half price, we’ll credit your account or meter back with 83p.

We round payments to the nearest penny. So if you earn a 55.5p credit, we’ll round this up to 56p. If you earn 55.4p, we’ll round this down to 55p.

I’m on a PeakSave tariff, can I still take part in regular PeakSave Sunday events?

If you’ve chosen our PeakSave Super Sunday tariff, you can't also take part in our regular PeakSave Sundays. But the good news is, you're automatically included in our Super Saturdays over the summer, and you can still opt in to PeakSave Green Flex events to make the most of half-price electricity.

Can I take part in PeakSave if I’m on your EV tariff?

Yes. If you’re registered for PeakSave already or have received an email from us inviting you to take part, you can get involved. But please be sure to check your tariff unit rates here if you plan to charge your electric vehicle during any of the events.

If you normally charge up overnight on a discounted rate and don’t top up again during the day, you may end up paying more to charge during a PeakSave event, even with electricity being half price.

Can I join PeakSave if I’ve got a prepayment meter?

Yes – we can now offer PeakSave to customers who prepay for their electricity. Sign up to find out about the PeakSave events and how you can make the most of them. We’ll let you know how to get involved in each event and how we’ll credit your meter afterwards.

What is the Demand Flexibility Service (DFS)?

Demand Flexibility Service is part of a national effort by suppliers and National Grid ESO to help create a better balance between supply and demand on the electricity grid. Relieving pressure on the grid at peak times will make sure everyone gets the electricity they need to power their lives. And as increased demand at busy times is often met by burning fossil fuels, it'll help the grid be greener, too.

PeakSave Winter was our first flexible energy trial. Nearly 200,000 PeakSavers took part between December 2022 and March 2023, and by making small changes to when they used energy, they collectively helped save 147 MWh of electricity at peak times. That’s enough to power 750,000 homes for an hour!

And last winter, we paid more than £2 million to our customers, with each customer on average saving more than £9 on their electricity bill.

Following the success of PeakSave Winter, we were excited to explore new ways our customers could save money through flexible energy use.

So, in June last year, we launched PeakSave Sundays – where customers enjoy half-price electricity for five hours every Sunday. Demand is low on Sundays, so we encourage our customers to use as much as they need between 11am and 4pm. Not only are they saving money, but also helping to make greater use of cleaner, greener energy by moving their electricity use to off-peak times.

And more recently we’ve introduced PeakSave Green Flex events. These reward customers for moving electricity use to times when there is likely to be lots of renewable electricity available in the UK’s energy system. This could be because of lower demand, large amounts of renewable energy being produced with windier or sunnier weather conditions, or both.

What if there are problems with my smart meter?

If there’s a problem with your smart meter that means we can’t see how much electricity you used during a PeakSave Gold Sunday or Supper Saturday, we don’t want you to lose out and you’ll still earn a credit.

For PeakSave Gold Sundays and Super Saturday, we’ll use average consumption during the eight hours, based on available smart meter data from other PeakSavers, multiplied by your tariff unit rate to calculate your credit.

However, you’ll only be invited to take part in PeakSave Green Flex events if your smart meter is working properly and sending us regular readings.

What is flexible energy?

Energy systems need to continuously match supply to demand. This is called energy balancing. Flexible energy, or flexible demand, helps energy systems maintain this balance during periods of uncertainty.

In the past, this used to mean firing a generator up or down to meet the changing levels in energy usage. We used to hear how at half-time during the FA Cup Final, there was a huge spike in demand, as the nation reached for the kettle. Behind the scenes it meant power stations burning more coal (and sometimes even oil) to allow the country to have a simultaneous cup of tea. Now we can achieve grid flexibility through new methods, including energy storage, demand-side response (or flexible demand), and distributed generation (generating low carbon electricity at home or work, through solar panels or wind turbines, often paired with battery storage).

We’re exploring new ways we can supply cleaner, greener energy and help customers save money through flexible energy use, and PeakSave rewards customers for changing how and when they use electricity helping to reduce demand at its busiest. This helps to balance the grid and means we’re less reliant on fossil fuels to meet that demand, making our electricity more sustainable.

If you’d like to know more, see Centrica’s The Power of a flexible energy system.

Can I take part in PeakSave if I own roof-top solar panels and battery storage?

Yes. If you’re registered for PeakSave already or have received an email from us inviting you to take part, you can get involved.

Just bear in mind that your credits will depend on your electricity usage and generation, and how your battery is configured.

What if I move home or change supplier?

You’ll no longer be eligible for PeakSave if you move home, even if you take your British Gas account and tariff with you to your new property.

If you have a gas account with us and switch it to a new supplier, you’ll still be eligible for PeakSave. However, if you switch your electricity account with us to a new supplier, you’ll no longer be able to take part.

If you switch your electricity account to a new supplier and we owe you a reward payment for a PeakSave event, this will go towards your final bill. Whatever’s left over, we’ll send to you by bank transfer or cheque, depending on how you pay your bills.

If you prepay for your electricity and we owe you a reward payment, we'll credit the amount directly to your smart meter. If, for any reason, we can't add it to your meter remotely, we'll send a cheque instead.

Legal information


Learn more about our PeakSave flexible energy initiative.

Learn about PeakSave

PeakSave Green Flex

Learn more about our PeakSave Green Flex events and how they work.

More about PeakSave Green

Additional information

  1. You’ll pay your daily standing charge at your normal rate. This will not be discounted.

    PeakSave Sunday events are subject to eligibility criteria and terms and conditions, which can be found in full here.

    For PeakSave Sundays, customers will receive a credit on their account or meter related to their electricity usage, calculated by using your smart meter readings. The number of units of electricity used will be multiplied by 50% of your tariff rate after VAT.

    Your bill credit will normally appear on your credit electricity account within two weeks of each PeakSave Sunday event ending, although it could occasionally take longer to credit your account. If you prepay for your electricity, a payment message will be applied to your meter within 10 working days of the end of the month. There will be three attempts to post the payment on the meter within these 10 working days. If the payment does not appear on the meter for any reason, then a cheque will be sent to you within a further five working days.