EV Agile Charge Calculator

Work out a price cap for home charging on Octopus Agile (half-hourly rates). Pick your region and charging window—default overnight is 22:00–05:00.

How it works: Enter your battery and charge levels, charger power, and region. Set when you are happy for charging to run. We load Agile unit rates for that window, pick the cheapest half-hours you need, and suggest a cap that matches the most expensive of those slots.

Battery & charge targets

Usable capacity if you prefer

State of charge now

Charge you want by end of window

Charger & tariff region

AC charger rating

Match the region on your bill / Octopus account

Charging window

Earliest charge start (today)

Must finish by this clock time; if earlier than start (e.g. 05:00 after 22:00), we use the next morning

Fetching Octopus Agile prices…

Set your charger price cap to

0p/kWh

Inc. VAT — matches the highest rate among the cheapest half-hours we picked for you. You can set slightly above to allow small rounding.

Est. total
£0
Avg rate
0p/kWh
Energy target
0kWh
Charge time
0h
Slots used / need
0 / 0

Half-hours used