FranckH

⚡ Watt Budget is a free web tool, with no account and no ads, that works out the real cost and duration of charging an electric car: at home, on a rapid charger, during off-peak hours, with solar panels or a home battery.

It started as a simple spreadsheet shared between drivers. It is now a full website in 4 languages: charger map, trips with charging stops, EV vs petrol comparison, charging log, XCombo code library for XPeng owners and a Home Assistant connection.

I build it on my own, in my spare time, and host it myself. Your settings stay on your device: nothing to sign up for, nothing to share.

Why support it? The tool will stay free and ad-free. If Watt Budget saves you time or money, a small donation helps me keep improving it, add your ideas and keep it up to date.

👉 https://wattbudget.herviaux.fr

Thank you for your support, and happy charging! ⚡🚗