Our smart tariff is a 2 rate tariff for Bulb members with compatible smart meters. It's in 'beta', which means we're still testing it.

To join the smart tariff, you need a second generation (SMETS2) smart meter for electricity that can send us a reading every half hour. We're only signing up a small number of members during this testing phase.

Apply to join the smart tariff


How it works

With our smart tariff, there are 2 different rates for electricity:

  • Peak - the most expensive
  • Off-peak - cheaper

These rates reflect the changing demand for electricity during the day. Demand is higher in the late afternoon and early evening than overnight. So on the smart tariff, it costs less to use electricity outside of peak hours. On our standard tariff, it costs the same no matter when you use it.

The prices for each rate vary by region. 

The timings are based on Greenwich Mean Time (GMT):

Rate Hours 
Peak 4pm to 7pm weekdays

12am to 4pm, 7pm to 11.59pm

All weekend

During British Summer Time (BST), which is the last Sunday in March, to the last Sunday in October, the hours change to:

Rate Hours 
Peak 5pm to 8pm weekdays

12am to 5pm, 8pm to 11.59pm

All weekend

The smart tariff could save you money

Some things we do at home use a lot of electricity, like running the washing machine, tumble dryer or dishwasher. If you start using these appliances outside of peak hours, the smart tariff could save you money.

And if you have an electric car, you'll make savings by avoiding peak times when you charge it.


Not all smart meters are compatible

You can apply to join the smart tariff beta if you have a second generation smart meter (SMETS2).

Up until 2018, most smart meters installed in homes were first generation, or SMETS1. If you have a smart meter installed by Bulb, it will be second generation, or SMETS2.


Smart tariff prices

The rates you'll pay for peak and off-peak usage vary by region.

All prices include VAT at the applicable rate and are rounded to 2 decimal places. On your statements, VAT will be shown separately. 

Region Peak rate (pence per kWh) Off-peak rate (pence per kWh)

Standing charge
(pence per day)

East England 25.25 12.75 20.56
East Midlands 24.99 12.49 19.00
London 25.11 12.61 19.80
North Wales, Mersey and Cheshire 26.29 13.79 18.74
West Midlands 25.29 12.79 20.41
North East England 25.20 12.70 22.53
North West England 25.20 12.70 19.59
North Scotland 26.05 13.55 22.50
South Scotland 25.15 12.65 20.56
South East England 25.81 13.31 20.01
Southern England 25.18 12.68 20.64
South Wales 26.07 13.57 19.16
South West England 26.35 13.85 20.09
Yorkshire 24.68 12.18 22.6

You can cancel your smart tariff switch or go back to your previous tariff

If you decide the smart tariff isn’t for you, you’ve got a 14 day cooling off period to cancel your switch. This starts from the day you sign up. To cancel your switch to the smart tariff, email help@bulb.co.uk

We’ll send you an email when your smart tariff switch is complete.

At this point, you won’t be able to switch tariff again for 35 days - this is because we’ll be doing some work behind the scenes to finish setting up your account.

When we’ve finished setting up your account, you can leave the smart tariff at any point. To leave the smart tariff, go to the tariff page in your Bulb account where you’ll see an option to ‘Change tariff’.

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