Hum quietly charges your battery when power is cheapest, then runs your home through the expensive evening peak. You save money every day — without lifting a finger.
Sign in to your GivEnergy and Octopus accounts. No installer, no wiring — Hum talks to them for you.
It studies your usage and tomorrow's Octopus prices, then plans the perfect charge — full before peak, every time.
Run on your own stored power through the pricey evening. Check in anytime to see what you saved.
A fully-cycled battery on the Octopus Cosy tariff is worth up to £2.80 a day. Hum makes sure none of that value is left on the table.
Reads tomorrow's prices and tops up early if a cheap window won't be enough.
Holds your charge for the 4–7pm window so you never import at the top rate.
A gentle heads-up if your battery ever goes quiet — in plain English, not error codes.
See exactly what Hum did and what it saved — every single day, in pounds.
Free to try. Connects in two minutes. Cancel anytime.
Connect my battery30-day free trial · £4.99/month after · Cancel any time