Night reactive energy production

The output electronics of some inverters are capable of injecting reactive power into the grid by drawing power from the grid and reinjecting it with a phase shift, effectively acting as a capacitor. This capability is sometimes made available to the grid operator by PV plants, particularly at night when no PV production is occurring.

This night-time reactive power contribution is outside the scope of PVsyst, as it is unrelated to PV generation. In PVsyst, reactive power is only modelled in association with active PV power production, and is always proportional to the active power.