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.

Electric car use by country varies worldwide, as the adoption of plug-in electric vehicles is affected by consumer demand, market prices, availability of charging infrastructure, and government policies, such as purchase incentives and long term regulatory signals (ZEV mandates, CO2 emissions regulations, fuel economy…

sonnen GmbH (proprietary name and abbreviated form: sonnen) is a company in the energy industry headquartered in Wildpoldsried in the district of Oberallgäu, Germany. It produces home energy storage systems for private households and small businesses.

Climate change mitigation, also called decarbonisation, is an action to limit the greenhouse gases in the atmosphere that cause climate change. Climate change mitigation actions include conserving energy and replacing fossil fuels with clean energy sources.

Cimerwa Cement Limited (CCL) is a manufacturer of cement in Rwanda with capacity of approximately 600,000 tonnes per year.

This is the list of companies that manufacture cement in Zimbabwe.

Engie SA (stylised in all caps as ENGIE) is a French multinational electric utility company, headquartered in La Défense, Courbevoie. Its activities cover electricity generation and distribution, natural gas, nuclear power, renewable energy, district energy, and the petroleum industry.

The electricity sector in New Zealand uses almost entirely renewable energy, such as hydropower, geothermal power and increasingly wind energy. In the fourth quarter of 2025, the country generated 96.4% of its electricity from renewable sources.

A bifacial solar cell (BSC) is a photovoltaic solar cell that can produce electrical energy from both front and rear side. In contrast, monofacial solar cells produce electrical energy only when photons are incident on their front side.