This document discusses using gallium nitride (GaN) as a semiconductor material for solar photovoltaics to increase efficiency and reduce costs compared to silicon. GaN has several advantages for this application - it has a wider bandgap than silicon allowing for higher efficiencies. Replacing silicon with GaN in solar cells and their inverters could increase power efficiency up to 5 times while reducing size and weight. This may enable reducing the installed cost of solar power systems with battery storage by up to 50%. The document reviews the properties and fabrication of GaN as well as its potential applications in solar photovoltaic technology to harness its benefits.