The Transcendental Meditation movement (TM) are programs and organizations that promote the Transcendental Meditation technique founded by Maharishi Mahesh Yogi in India in the 1950s. The organization was estimated to have 900,000 participants in 1977, a million by the 1980s, and 5 million in more recent years.

The Tesla Powerwall is a rechargeable lithium-ion battery stationary home energy storage product manufactured by Tesla Energy. The Powerwall stores electricity for solar self-consumption, time of use load shifting, and backup power.

Equinor ASA (formerly Statoil and StatoilHydro) is a Norwegian multinational energy company headquartered in Stavanger, Norway. It is primarily a petroleum company operating in 36 countries with additional investments in renewable energy and lithium mining.

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.

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.

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.

Field Marshal Horatio Herbert Kitchener, 1st Earl Kitchener (; 24 June 1850 – 5 June 1916) was a British Army officer and colonial administrator. Kitchener came to prominence for his imperial campaigns, his involvement in the Second Boer War, and his central role in the early part of the First World War.