Energy in Afghanistan is provided by hydropower followed by fossil fuel and solar power. Currently, over 85% of Afghanistan's population has access to electricity.

Opus Energy Limited supplied gas and electricity to businesses across the United Kingdom. It purchases electricity from wind, solar, hydro, and anaerobic digestion generators, and provides support to develop energy-generating sites.

Renewable energy in Mexico contributes to 26 percent of electricity generation in Mexico. As of 2009, electricity generation from renewable energy comes from biomass, hydro power, geothermal, solar power and wind.

Renewable energy in Chile is classified as Conventional and Non Conventional Renewable Energy (NCRE), and includes biomass, hydro-power, geothermal, wind and solar among other energy sources. Usually, when referring to Renewable Energy in Chile, it will be the Non Conventional kind.

Renewable energy in Germany comes mainly from wind power, solar power and biomass and is a central component of the country's Energiewende. In 2025, renewable sources accounted for 23.8% of Germany's gross final energy consumption.

Energy Conversion Devices, Inc. (ECD) was an American photovoltaics manufacturer of thin-film solar cells made of amorphous silicon used in flexible laminates and in building-integrated photovoltaics.

Renewables supply a quarter of energy in Turkey, including heat and electricity. Hot water from underground warms many spas and greenhouses, and some houses have rooftop solar water heating.

The developing nations of Africa are popular locations for the application of renewable energy technology. Currently, many nations already have small-scale solar, wind, and geothermal devices in operation providing energy to urban and rural populations.

Vietnam utilizes four main sources of renewable energy: hydroelectricity, wind power, solar power and biomass. At the end of 2018, hydropower was the largest source of renewable energy, contributing about 40% to the total national electricity capacity.

Solar-cell efficiency is the portion of energy in sunlight that is converted into electricity by a solar cell. Efficiency, in combination with latitude and weather, determine the energy output of a solar system.