Electric car charging with solar panels: sustainable energy in the garage
May 26, 2025
Charging electric cars with solar power is a truly environmentally friendly solution, but it is also budget-friendly. Most people prefer to charge at home, and if there is already a solar system in place, it makes sense to use the energy from the sun for this purpose. By optimizing household energy consumption, it can be ensured that the car's battery receives as much power as possible "directly" from the solar panels, thus reducing the amount taken from the grid. In the following article, you can read about how this situation can be solved in the simplest way.
Why is it good to charge electric cars with solar energy?
With the rise of electric cars, more and more people are looking for options that leave the smallest ecological footprint possible. A solar system can cover the energy needs of the home, but we can also use the generated electricity to charge the vehicle.
Thanks to the dynamic load management feature, we can synchronize energy consumption and charge the car when the system generates the most electricity.
Unlike traditional grid charging, when we charge with a solar system, we do not increase the household's electricity bill, and we can become independent of fluctuating energy prices. Moreover, the car charged in this way truly operates on green energy.
Solar inverter protection: let's improve charging performance!
Although solar car charging proves to be a good solution, it does not always work perfectly. One common issue is that due to the high voltage of the electricity provider's network, the solar system cannot deliver electricity at full capacity. If the grid voltage reaches or exceeds 253 Volts, the inverter may automatically shut off, thus interrupting the production of our solar system. In systems where the inverter does not shut off upon reaching the standard threshold due to modified settings, this constitutes a legal violation that may incur penalties.
Many people are not even aware of this phenomenon, as they do not regularly check the inverter settings or performance logs. Such problems can be frustrating when the power supply unexpectedly cuts off while charging the electric car.
How does the Voltie charger help?
The Voltie charger is a smart solution that monitors the grid voltage and adjusts the car's charging accordingly. If the voltage is too high, we start the charging at a low current, then gradually increase it if the voltage level does not decrease. This makes the car charging more stable and balances the energy consumption of the entire household.
Thanks to the operation of the Voltie charger, the car's battery is always charged at the right pace without the grid voltage rising to risky levels. Users can set three voltage values:
One value for the automatic start of charging.
Another one for reducing the charging current.
A third one for stopping the charging.
The system responds with a delay to voltage fluctuations, thus avoiding continuous restarts and stops. If fast charging is needed, the function can be turned off with a single click.
Charging electric cars can also be realized with solar panels. With the right system and an intelligent charger like the Voltie, the problems arising from grid voltage fluctuations can be eliminated.
If you already have a solar system, it may be worth considering how to synchronize it with the charging of your electric car to make the most of the energy from the sun. Check out our website and learn about our solutions!
