How is solar energy used

The most commonly used solar technologies for homes and businesses are solar photovoltaics for electricity, passive solar design for space heating and cooling, and solar water heating. Businesses and industry use solar technologies to diversify their energy sources, improve efficiency, and save money.

Almost all life on Earth relies on solar energy for food, either directly or indirectly. Producers rely directly on solar energy. They absorb sunlight and convert it into nutrients through a process called photosynthesis. Producers, also called autotrophs, include plants, algae, bacteria, and fungi.

Solar energy is the energy generated by the sun and radiated through space, mostly as visible and near-infrared light. It sustains nearly all life on Earth. When sunlight strikes a surface on our planet, thermal energy, also called heat, is produced.

Most figures say that solar panels are roughly between 15% and 18% efficient, meaning that 15% to 18% of the sunlight they absorb is converted into electricity while the rest hits the solar panel and warms the surface like it would anything else.

The sun shines on the solar panels, generating “DC” (Direct Current) electricity. The electricity is fed into a solar inverter that converts into “AC” (Alternating Current) electricity. The AC electricity powers appliances in your home.