Article on energy

Is energy conservation the next great fuel?

Although energy conservation can help delay the need for new fuels, it is not the next great fuel. Experts emphasize that "There is no silver bullet." in the search for new fuels for humanity's ever-growing energy demands. The passage goes on to discuss the importance of continuing the search for alternative fuels.

What are the main sources of energy?

For the major sources of energy and the mechanisms by which the transition of energy from one form to another occurs, see coal; solar energy; wind power; nuclear fission; oil shale; petroleum; electromagnetism; and energy conversion. The Editors of Encyclopaedia Britannica This article was most recently revised and updated by Adam Augustyn.

Can marine energy be used as a source of energy?

Marine energy projects currently generate an estimated 500 megawatts of power —less than one percent of all renewables—but the potential is far greater. Programs like Scotland’s Saltire Prize have encouraged innovation in this area. Wind: Harnessing the wind as a source of energy started more than 7,000 years ago.

Does energy conservation really work?

Energy conservation does effectively reduce energy usage. However, as the author suggests, it's important to continue the search for new fuel sources as well.

Why do renewables have a higher share in the energy mix?

This includes not only electricity but also transport and heating. Electricity forms only one component of energy consumption. Since transport and heating tend to be harder to decarbonize – they are more reliant on oil and gas – renewables tend to have a higher share in the electricity mix versus the total energy mix.

Are solar and wind power the least expensive new sources of electricity?

Today, solar and wind power are the least expensive new sources of electricity in many markets, generating 12 percent of global electricity and rising. This year, for the first time, global investors are expected to pour more money into solar power — some $380 billion — than into drilling for oil.