WattWhen
WattWhen
Prices change by the hour. WattWhen tells you the cheapest time and the best place to charge — at home, en route, or at your destination.
Tesla Supercharger – 12 stalls
Tesla Supercharger – 8 stalls
Best time today: 23:00–06:00 (night tariff)
Stop guessing. Start planning. Save up to 50% on energy costs just by charging at the right time and place.
Get real-time and forecasted price signals. Decide whether to charge now or wait for cheaper hours.
Instantly see the 5 most affordable chargers around you.
Plan trips with optimal charging stops. Balance time vs. cost and avoid expensive detours.
Works with Tesla Superchargers and (soon to come) other networks. Compare prices, distance, and stall availability.
Set your EV model, consumption, and battery size. Results adapt to your real-world efficiency.
Manage multiple cars in your household or business fleet. Track each vehicle’s consumption, battery size, and charging costs in one place.
Your car has 120 km left. WattWhen recommends charging at 07:00 instead of 09:00 — saving you €7.20 on a full charge. On your trip, stop at a €0.19/kWh charger only 5 minutes off route.
Download WattWhen and start saving on every charge.
Available in Europe. Rolling out to more regions soon.