TechnologyE-Mobility
Charging Wallbox with Solar Power – Smart & Green
Smart charging ensures you charge your EV exclusively with surplus solar electricity at zero cost.
Key figures overview
up to 80 %
Saving vs. grid
3.7–22 kW
Wallbox power
approx. 6 km
km per kWh solar
9–13 years
Payback combined
Why this combination?
Charging at zero cost
Surplus solar electricity drives the vehicle instead of being fed in for 4–12 Rp./kWh.
Smart charging integration
EMS starts charging automatically when PV surplus is available.
V2H – Vehicle-to-Home
Bidirectional wallboxes feed vehicle battery energy back into the house.
Lower grid load
Managed charging reduces peak load and benefits time-of-use tariffs.
Frequently asked questions
Recommended wallbox power for solar charging?
Pure solar: 3.7 kW. Fast charging priority: 11 kW three-phase.
Can I fully charge EV with solar?
8–10 kWp produces ~8,000 kWh in Switzerland – enough to fully cover most EVs.
Is there a subsidy for wallboxes?
No federal subsidy. Some cantons/providers offer CHF 500–2,000.
Solar + wallbox – calculate your potential
Calculate your solar potential including heat pump and storage integration.
Calculate subsidy