Appliance timer
Find the cheapest time to run an appliance
Choose a common appliance or enter your own power and duration. OffPeakly checks the stored Agile prices for your region and finds 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
£0.45 estimated cost
20.1p/kWh average
Wait until 22:30 for the cheapest valid washing machine window.
Compared with running now: saves about £0.04.
This window avoids the 4pm–7pm peak.
Waiting only saves about £0.04, so running now may be reasonable.
Alternative windows
Other valid options
22:00–23:30
Average price
20.6p/kWh
Estimated cost
£0.46
Cheapest alternative
21:30–23:00
Average price
20.6p/kWh
Estimated cost
£0.46
Avoids peak
21:00–22:30
Average price
21.2p/kWh
Estimated cost
£0.48
Avoids peak
Assumptions
How the estimate works
Each half-hour slot is estimated as: unit rate × appliance power × 0.5 hours.
Only contiguous windows are considered. Missing slots or broken time ranges are ignored.
Today checks only slots still available from now. Tomorrow is available once tomorrow’s prices are loaded.
Next step
What to check next
Create price alert →
Get an email 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 →
Learn when cheap slots are useful and when the evening peak matters more.