Energy in Ethiopia includes energy and electricity production, consumption, transport, exportation, and importation in the country of Ethiopia. Ethiopia's energy sector is crucial for its development, with wood being a primary energy source, leading to deforestation challenges.

Thermal energy storage (TES) is the storage of thermal energy for later reuse. Employing widely different technologies, it allows thermal energy to be stored for hours, days, or months.

The energy policy of the United States is determined by federal, state, and local entities. Federal Energy policy is principally led by the U.S. Department of Energy.

The renewable-energy industry is the part of the energy industry focusing on new and appropriate renewable energy technologies. Investors worldwide are increasingly paying greater attention to this emerging industry.

Bristol Energy was a municipally owned energy supply company, founded in September 2015 by Bristol City Council. Its business accounts were sold to Yü Energy in August 2020, and in the following month its residential accounts were sold to Together Energy.

Energy conservation is the effort to reduce wasteful energy consumption by using fewer energy services. This can be done by using energy more effectively (using less and better sources of energy for continuous service) or changing one's behavior to use less and better source of service (for example, by driving…

Ireland is a net energy importer and remains highly dependent on fossil fuels. According to the Sustainable Energy Authority of Ireland's 2024 report, fossil fuels supplied 82.7% of Ireland's energy needs in 2023, while renewable energy accounted for 14.1% of primary energy, its highest share to date.

Whether nuclear power should be considered a form of sustainable energy or renewable energy is an ongoing subject of debate. Legal definitions of renewable energy usually exclude nuclear energy technologies, with the notable exception of the U.S. state of Utah.

Energy in North Korea describes energy and electricity production, consumption and import in North Korea. Primary energy use in North Korea was 224 TWh and 9 TWh per million people in 2009.

Marine energy, also known as ocean energy, ocean power, or marine and hydrokinetic energy, refers to energy harnessed from waves, tides, salinity gradients, and temperature differences in the ocean. The movement of water in the world's oceans stores vast amounts of kinetic energy, which can be converted into…