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www.renewableenergyworld.com/geothermal-energy/tech.html

Geothermal energy is the heat from the Earth. It's clean and sustainable. Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma.

en.wikipedia.org/wiki/Renewable_energy

Renewable energy costs continue to drop, and the levelised cost of electricity is declining for wind power, solar photovoltaic , concentrated solar power and some biomass technologies. Renewable energy is also the most economic solution for new grid-connected capacity in areas with good resources.

www.energy.gov/.../5-things-know-about-geothermal-power

Home » 5 Things to Know About Geothermal Power Geothermal energy—energy derived from the heat of the earth—can be harnessed both as a source of renewable electricity as well as directly for heating and cooling applications.

www.energy.gov/.../energy-sources/renewable-energy/geothermal

Geothermal energy is heat derived below the earth’s surface which can be harnessed to generate clean, renewable energy. This vital, clean energy resource supplies renewable power around the clock and emits little or no greenhouse gases -- all while requiring a small environmental footprint to develop.

www.nationalgeographic.com/.../reference/renewable-energy

Solar, wind, hydroelectric, biomass, and geothermal power can provide energy without the planet-warming effects of fossil fuels. Renewable Energy 101 There are many benefits to using renewable ...

www.ucsusa.org/.../how-geothermal-energy-works.html

The future of geothermal energy. Geothermal energy has the potential to play a significant role in moving the United States (and other regions of the world) toward a cleaner, more sustainable energy system. It is one of the few renewable energy technologies that can supply continuous, baseload power.

www.americangeosciences.org/critical-issues/faq/why...

Drew L. Siler, PhD, Geothermal Geologist: "Geothermal energy is renewable because the Earth has retained a huge amount of the heat energy that was generated during formation of the planet. In addition, heat is continuously produced by decay of radioactive elements within the Earth.

www.fluor.com/client-markets/infrastructure/renewable-energy

Fluor is at the forefront of commercializing renewable energy, servicing the solar, wind and geothermal power markets. We offer a full range of services to bring renewable projects from conceptual design to final completion, with renewable energy project development experience including:

www.renewableenergyworld.com/geothermal-energy/tech/geo...

Geothermal power plants use steam produced from reservoirs of hot water found a couple of miles below the Earth's surface. There are 3 types of geothermal power plants: dry steam, fash steam and binary cycle.

www.eia.gov/energyexplained/?page=geothermal_home

Geothermal energy is heat within the earth. The word geothermal comes from the Greek words geo (earth) and therme (heat). Geothermal energy is a renewable energy source because heat is continuously produced inside the earth. People use geothermal heat for bathing, to heat buildings, and to generate ...