Energy (from Ancient Greek ἐνέργεια (enérgeia) 'activity') is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in …

Sep 5, 2025 · Energy, in physics, the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or various other forms. There are, moreover, heat and …

We are an integrated energy company that provides electricity to 3 million utility customers in Arkansas, Louisiana, Mississippi and Texas.

Energy is an international, multi-disciplinary journal in energy engineering and research, and a flagship journal in the Energy area. The journal aims to be a leading peer-reviewed platform …

Primary energy sources take many forms, including nuclear energy, fossil energy -- like oil, coal and natural gas -- and renewable sources like wind, solar, geothermal and hydropower. These …

Dec 10, 2024 · Scientists define energy as the ability to do work. Modern civilization is possible because people have learned how to change energy from one form to another and then use it …

Jun 10, 2025 · Energy is the ability to do work, but it comes in various forms. Here are 10 types of energy and everyday examples of them.

Nov 27, 2017 · Get the definition of energy in science, especially physics and chemistry, along with examples of different forms of energy.

Explore data on how energy production and use varies across the world.

Mar 13, 2025 · Learn about clean energy, the impact of energy on the environment, and U.S. electricity generation. Clean energy includes renewable energy, energy efficiency and …