Find the cheapest time to run your appliances and charge your EV
SweetSpot scans dynamic electricity prices across 30 European countries to find the cheapest window to run your appliances or charge your EV — finished by a deadline if you set one. Open source and private.
Features
30 European Countries
Covers 43 bidding zones across Europe, from Portugal to Finland and from Norway to Greece.
Real-Time Prices
Day-ahead electricity prices from the ENTSO-E Transparency Platform, updated daily.
Smart Algorithm
A sliding window algorithm finds the cheapest contiguous period for any duration you choose.
Reliable Data
Five data sources with automatic fallback ensure prices are always available.
Wear OS
Companion app for Pixel Watch and other Wear OS 3+ devices. Check prices from your wrist.
Custom Appliances
Save your appliances with custom names, icons, and durations for one-tap access.
EV Charging
Add your car, then enter its current and target charge. SweetSpot works out the charging time and the cheapest time to plug in.
Ready-By Deadline
Need it finished by a set time? Add a 'ready by' deadline and SweetSpot only picks windows that complete in time.
Power Rating
Give an appliance its power in kW and the cost estimate reflects what it really uses, instead of a flat 1 kW.
25 Languages
Available in 25 European languages, from Bulgarian to Swedish.
Privacy First
No accounts, no analytics, no tracking. Prices are cached locally on your device.
Open Source
The full source code is available on GitHub under the GPL v3 license.
How It Works
Choose Appliance or EV
Pick a saved appliance or your EV, or set a custom duration — and optionally a 'ready by' deadline.
Scan Prices
SweetSpot fetches the latest day-ahead electricity prices for your region.
Get the Best Time
See exactly when to start, with a full cost breakdown per time slot.
Start saving on electricity
Get SweetSpot on Google Play and find the cheapest time to run your appliances and charge your EV.
