Marriott International, Inc. (/ˈmær.i.ət/) is an American multinational company that operates, franchises, and licenses lodging brands that include hotel, residential, and timeshare properties.

Chiffon margarine is a brand of margarine. It was first manufactured in 1954 by Anderson, Clayton and Company, a cotton products firm of Houston, Texas.

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.

Lurasidone, sold under the brand name Latuda among others, is an atypical antipsychotic medication used to treat schizophrenia and bipolar depression. It is taken by mouth.

NRG Energy, Inc. is an American energy company, headquartered in Houston, Texas.

Tesla Energy Operations, Inc. is the sustainable energy division of Tesla, Inc.

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 is thermal energy extracted from the Earth's crust. It combines energy from the planet's formation and from radioactive decay.

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 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.