Charging from solar: An average residential 6kW solar system can generate 2 to 3kW even during partly cloudy weather, so solar EV charging using a 10A plug-in portable charger is relatively easy. 2. Single-phase Home EV chargers A standard home 32A wall-mounted EV charger (level 2)
If you have a DC-coupled battery, a Solar EV charger can only provide limited battery-related functionality, because it's not aware of the battery. At best, you may be able to specify a "margin" that may enable some control over whether the battery or the EV is charged first.
Once you have your solar system, you need a solar-integrated smart charger. A solar integrated smart charger basically has terminals for a solar or renewable feed, creating a connection between your solar system and EV charger. You can tap into both solar and grid charging by linking the two.
However, as explained later, solar EV charging using a more powerful 7kW (level 2) charger can be tricky, even with a much larger solar system. The problem arises as the solar will often not generate enough to cover a level 2 charger at full power during cloudy or bad weather.
Solar EV chargers are similar to a standard EV wall charger with the addition of solar monitoring and control systems. The charger may have one or more sets of sensors called current clamps (often referred to as CT clamps) which monitor the power flows in your home to detect when excess solar is available.
If this is the case, using an EV charger from the same manufacturer as your solar inverter makes sense and easily lets you set up a smart EV charger. Likewise, if you have a hybrid (battery storage) system, you will already have an energy meter, so these are also compatible with smart EV charging.