Zaptec Smart Charging is a control panel and automation service for smarter electric vehicle charging, built to be quick, clear and useful from a mobile phone.
The project connects Zaptec charger status with Swedish electricity spot prices and a small automation layer. Instead of manually checking if the car is connected, whether it is charging, or when electricity is cheapest, the dashboard gives one focused view of the current state.
The interface shows whether the car is connected, the live charger state, current power, phase current, allowed current, session energy and a 24-hour charging overview. It also summarizes charging cost for the latest day, week and month, making it easier to understand what the charging actually costs over time.
Behind the scenes, a scheduled control script can choose cheaper charging windows while still respecting a required full-charge time. Weekdays and weekends can have separate ready times, and manual modes make it possible to pause charging, force charging or return to normal price-based automation.
The solution is offered as a hosted subscription through Zodor Productions, where the dashboard, scheduled charging logic, secure credential handling and monitoring are managed for the customer.
The system is intentionally practical: a clean web dashboard, scheduled control logic, Zaptec API integration for charger commands, secure handling of customer settings and a setup that can grow from one private installation to a hosted service with multiple subscribers.
Why it can pay for itself
Many smart charging solutions are tied to a specific electricity supplier. Zaptec Smart Charging is different: it is designed for Zaptec owners who already have, or want to choose, any electricity contract with 15-minute spot pricing. The customer keeps their electricity provider, while the service moves charging to the cheapest available price windows.
Using SE3 spot prices from the last six months as an example, charging immediately after coming home around 18:00 averaged about 105.8 öre/kWh for the flexible spot-price part. Optimized charging before the car had to be ready averaged about 50.9 öre/kWh. That is a difference of roughly 54.9 öre/kWh before VAT, or about 68.6 öre/kWh in customer value when VAT on the spot-price part is included.
At a subscription price of 99 SEK/month, the service can start paying for itself at roughly 145 kWh of home charging per month. For many EV owners, that is around 700-900 km of monthly driving, depending on the car.
| Vehicle example | Estimated wall energy | Monthly driving | Estimated saving |
|---|---|---|---|
| Tesla Model Y RWD | 17.6 kWh/100 km | 1,500 km | about 180 SEK/month |
| Volvo EX30 Single Motor | 18.2 kWh/100 km | 1,500 km | about 190 SEK/month |
| Volkswagen ID.4 Pro | 19.8 kWh/100 km | 1,500 km | about 205 SEK/month |
| Polestar 2 Long Range | 20.4 kWh/100 km | 1,500 km | about 210 SEK/month |
| Mazda CX-60 Plug-in Hybrid | 25.3 kWh/100 electric km | 1,000 electric km | about 175 SEK/month |
For heavier home charging, the value increases quickly. A car using around 400 kWh per month could save roughly 275 SEK on the flexible spot-price part. The exact result depends on driving pattern, electricity area, charger power, local grid fees and how much of the charging can be moved to cheaper periods.
Project highlights
- Available as a hosted subscription through Zodor Productions.
- Zaptec API integration for charger state and control.
- Swedish electricity price data with charging cost summaries.
- Automatic schedule logic for cheaper charging before the car must be ready.
- Manual pause, force and normal charging modes.