Costco
Costco Wholesale Corporation is an American multinational corporation that operates a chain of membership-only big-box warehouse club retail stores. As of 2025, Costco is the third-largest retailer in the world, and as of August 2024, the world's largest retailer of beef, poultry, organic produce, and wine, with just…
Energy transition
An energy transition (or energy system transformation) is a major structural change to energy supply and consumption in an energy system. Currently, a transition to sustainable energy is underway to limit climate change.
Renewable energy
Renewable energy (also called green energy) is energy made from renewable natural resources that are replenished on a human timescale. The most widely used renewable energy types are solar energy, wind power, bioenergy/biomass, and hydropower.
NRG Energy
NRG Energy, Inc. is an American energy company, headquartered in Houston, Texas.
Energy return on investment
In energy economics and ecological energetics, energy return on investment (EROI), also sometimes called energy returned on energy invested (ERoEI), is the ratio of the amount of usable energy (the exergy) delivered from a particular energy resource to the amount of exergy used to obtain that energy…
Geothermal energy
Geothermal energy is thermal energy extracted from the Earth's crust. It combines energy from the planet's formation and from radioactive decay.
Constellation Energy
Constellation Energy Corporation is an American energy company headquartered in Baltimore, Maryland. The company provides electric power, natural gas, and energy management services.
Energy policy of the United Kingdom
The energy policy of the United Kingdom refers to the United Kingdom's efforts towards reducing energy intensity, reducing energy poverty, and maintaining energy supply reliability. The United Kingdom has had success in this, though energy intensity remains high.
Open energy system models
Open energy-system models are energy-system models that are open source. These models can also be known as open energy models or open-source energy-system models or some combination thereof.
Energy policy of the European Union
The energy policy of the European Union focuses on ensuring energy security and affordability, integrating the energy markets of European Union member states, improving energy efficiency, expanding renewable energy and reducing greenhouse gas emissions. Climate policy has become a central part of EU energy policy,…
