What type of energy do inverters convert to AC?

Inverters primarily convert direct current (DC) into alternating current (AC) for use in electrical power systems. The most common source of DC energy for inverters is solar energy, where photovoltaic (PV) panels convert sunlight into DC electricity. This is why the correct answer is solar energy.

While other energy sources such as wind and hydraulic can also be involved in producing electricity, they generally rely on different types of generators that produce AC directly. Nuclear energy typically produces steam that drives turbines to generate electricity, which is also primarily AC from the outset. In the context of inverters, however, solar energy stands out as it specifically aligns with the function of converting the electricity generated by solar panels from DC to AC for use in home and commercial electrical systems.