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All our calculations are based on official published figures from the government department for Business, Energy & Industrial strategy (BEIS) impact studies.

To many people, getting a smart meter might seem like a small and relatively insignificant thing to do. But at its heart, a smart meter is there to help you save energy. So, if your household, the one next door, and the rest of the nation gets one and saves energy; then the impact of having a smart meter is actually rather substantial.

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What about the calculations in the individual adverts?

Claim  Substantiation
When should the future begin? Download our calculations
If the whole nation got a smart meter we could save the same amount of energy as it takes to power every household in Aberdeen, Cardiff and Manchester for a year Download our calculations 
The Smarter Britain bus tour claims Download our calculations 
If we all had a smart meter, the CO2 savings would be like taking over 600,000 cars off the road by 2030    Download our calculations    
If we all had a smart meter, the CO2 savings would be like planting more than 10 million trees every year until 2030
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Get a smart meter and you could save enough energy to have 26,473 cups of tea in a year Download our calculations 
Get a smart meter and you could save enough energy for 265 blow drys Download our calculations
Get a smart meter and you could save enough energy to power a sewing machine non-stop for 195 days Download our calculations
With smart meters, we only need to save £10 a year to stop millions of tonnes of C02 from entering our atmosphere by 2030 

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Some people have saved up to £150 a year by switching to a smart meter tariff

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Get a smart meter and you could save enough energy to power your tumble dryer for 91 cycles

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Smart Meter Bingo terms and conditions - Smart Meter Bingo was an online bingo game that ran for 6 weeks starting in October 2018.

  Download terms and conditions 


When can I get a smart meter?

Upgrading homes to smart meters won't happen overnight. There are more than 26 million homes for the energy suppliers to get to, with the goal of every home having a smart meter by the end of 2020. the time it takes for you to get your smart meter will generally depend on two factors

1. Who your energy supplier is
Every gas and electricity supplier will each have their own timetable to get this huge job done. Some have already fitted early generation smart meters. Others haven't started their rollout yet, but they do need to offer you a smart meter by the end of 2020.

2. Your home
Because of how the technology is developing, where you live, the type of home you have, and the type of meter you have may affect when you can get a smart meter. Each energy supplier is structuring their rollout of smart meters in their own way. You will need to speak to your supplier about when you can expect to get yours, but you will be offered one by the end of 2020.

What will your smart meter show you?

Smart meters come with an in-home display screen that shows you exactly how much energy you're using in near real time (it updates at least every 10 seconds for electricity and every half hour for gas) and can show you what it's costing you in pounds and pence (or if you prefer it, kwh or CO2 emissions). Smart meters will show you how much energy you've used within the last day, week, and month.

For smart meters operating in prepay mode, it will also show:

  • how much credit you have left
  • how much you have on your emergency credit balance
  • your debt balance, if you have one
  • a visual or audio alert if your credit’s getting low

Will a smart meter show me how much energy my appliances are using?

On your smart meter’s in-home display screen, you’ll be able to see exactly how much energy you're using in near real time, in pounds and pence.

This figure will accurately show how much energy is being used by everything you’ve got running in your home – including things that are always on, like your fridge.

You can use this information to help you work out which appliances are wasting energy or cost the most to run by noting what causes your energy usage to spike. Your in-home display won’t show you how much energy an individual device is using, but some energy suppliers offer services and apps that can do this for you. Contact your energy supplier to find out what they offer.