Rapidly expand the use of solar energy as the primary source of electricity and heating.
Solar is key to phasing out fossil fuels and accelerating the electrification of everything. It can be our primary source of heating and electricity. There are two basic types of solar technology: solar thermal, which captures the sun’s heat for both electricity and heating, and photovoltaic (PV), which converts sunlight into electricity. Solar technology’s costs have fallen steeply in recent years while efficiency has risen. Solar employs millions of people and provides clean energy around the world, from steel mills to solar farms, to households in big cities and remote villages. Accelerating its solar share from its current 3 percent of global electricity production will require adoption at every level, including households, offices, schools, corporations, institutions, and governments.