Appliance timer
Find the cheapest time to run an appliance
Choose a common appliance or enter your own power and duration. We’ll use stored Agile prices for your selected region to find the cheapest valid run window.
Inputs
Choose your appliance and timing limits
Exclude windows that overlap the 4pm–7pm peak.
Best result
Best time to run your washing machine
London · Region C · Today
22:30–00:00
£0.47 estimated cost
20.7p/kWh average
Wait until 22:30 for the cheapest valid washing machine window.
Running now would cost about £0.77, so waiting saves about £0.30.
This window avoids the 4pm–7pm peak.
Alternative windows
Other valid options
22:00–23:30
Average price
22.0p/kWh
Estimated cost
£0.50
Cheapest alternative
21:30–23:00
Average price
22.4p/kWh
Estimated cost
£0.50
Avoids peak
21:00–22:30
Average price
23.5p/kWh
Estimated cost
£0.53
Avoids peak
Assumptions
How the estimate works
Each half-hour slot cost is calculated as: unit rate × appliance kW × 0.5 hours.
Only contiguous windows are considered. Missing slots or broken time ranges are ignored.
Today only uses remaining stored slots. Tomorrow only uses tomorrow’s stored slots if available.
Next step
Continue from the timer
Create price alert →
Ask for a reminder when tomorrow’s prices arrive or a cheap window appears.
Inspect Agile detail →
Check the full chart, table, and remaining windows for this region.
Compare tariff →
Estimate whether a flat rate still looks better or worse than Agile timing.
Read Agile guides →
See practical guidance on shifting demand and avoiding the peak.