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What do we have to do to make this resource work for us in the future?

"In some countries geothermal energy has been around for thousands of years and has been used for cooking and heating."

"The heat from the earth's own molten core can be converted into electricity. This core consists primarily of extremely high temperature liquid rock known as magma. This "geothermal" heat circulates within the rock or is transferred to underground reservoirs of water, which also circulate under the earth's crust. Because of the near limitless ability of the earth to produce magma, and the continuous transfer of heat between subsurface rock and water, geothermal energy is considered a renewable resource. Geothermal resources have been harnessed as an energy source since the dawn of civilization, when natural hot springs were first used for cooking and bathing. The geothermal resources tapped to generate electricity are far more intense than those used for space heating and can reside as deep as 10,000 feet below the earth's surface. Capital costs for the construction of geothermal power plants are much higher than for large coal-fired plants or new natural gas turbine technologies. But geothermal plants have reasonable operation and maintenance costs and no fuel costs. Though more expensive than wind power in most cases, new geothermal electricity generation facilities are increasingly competitive with fossil options."

"Geothermal energy uses hot water or steam from deep in the Earth. As a consequence it does not require fuels which produce emissions. However there are hot water (condensate) releases which may cause thermal pollution."

"You can drill a hole just about anywhere to get this abundant, high temperature geothermal energy, but the hole would be miles deep, and dry. It is possible to use that heat resource, but terribly expensive, and drilling is just the beginning of the expensive engineering problems of utilizing extremely deep geothermal energy resources."

"Wave energy is the transport of energy by ocean surface waves, and the capture of that energy to do useful work - for example, electricity generation, water desalination, or the pumping of water (into reservoirs). Machinery able to exploit wave power is generally known as a wave energy converter (WEC)."

"Today's photovoltaic systems are used to generate electricity to pump water, light up the night, activate switches, charge batteries, supply power to the utility grid, and much more. 1839: Nineteen-year-old Edmund Becquerel, a French experimental physicist, discovered the photovoltaic effect while experimenting with an electrolytic cell made up of two metal electrodes. 1873: Willoughby Smith discovered the photoconductivity of selenium. 1876: Adams and Day observed the photovoltaic effect in solid selenium. 1883: Charles Fritts, an American inventor, described the first solar cells made from selenium wafers. 1887: Heinrich Hertz discovered that ultraviolet light altered the lowest voltage capable of causing a spark to jump between two metal electrodes. 1904: Hallwachs discovered that a combination of copper and cuprous oxide was photosensitive. Einstein published his paper on the photoelectric effect. 1914: The existence of a barrier layer in PV devices was reported. 1916: Millikan provided experimental proof of the photoelectric effect. 1918: Polish scientist Czochralski developed a way to grow single-crystal silicon. 1923: Albert Einstein received the Nobel Prize for his theories explaining the photoelectric effect. 1951: A grown p-n junction enabled the production of a single-crystal cell of germanium. 1954: The PV effect in Cd was reported; primary work was performed by Rappaport, Loferski and Jenny at RCA. Bell Labs researchers Pearson, Chapin, and Fuller reported their discovery of 4.5% efficient silicon solar cells; this was raised to 6% only a few months later (by a work team including Mort Prince). Chapin, Fuller, Pearson (AT&T) submitted their results to the Journal of Applied Physics. AT&T demonstrated solar cells in Murray Hill, New Jersey, then at the National Academy of Science Meeting in Washington, DC. 1955: Western Electric began to sell commercial licenses for silicon PV technologies; early successful products included PV-powered dolla

"The company is seeking to add up to 50 megawatts (MW) of geothermal energy from geothermal resource developers at prices not tied to the cost of oil to help lower electricity costs for customers. The added power must also blend operationally with other resources, including renewable energy from wind, solar, biomass and hydro. "Moving forward on geothermal is important to Hawaii Island because we want to increase our use of renewable energy and bring down costs to our customers,"

"When hydrogen combines with oxygen to produce water in a fuel cell the hydrogen is taken from a tank carried in the vehicle and the oxygen is taken from the air (as it is in gasoline-combustion vehicles). The reaction is 2 H2 + O2 -> 2 H2O . So, for every 2 hydrogen atoms taken from the fuel tank, 1 oxygen atom is taken from the air. An oxygen atom is about 16 times more massive than a hydrogen atom, so the water molecule is 9 times [(16 + 2) / 2] more massive than the 2 hydrogen atoms used to make it."

"Benefits Fuel Flexibility: Many fuel cells, like these FuelCell Energy units, can run on natural gas or biogas. Fuel cells offer a unique combination of benefits that make them a vital technology ideally suited for a number of applications.  From high efficiency to scalability, fuel cells provide a distinct advantage over incumbent energy generation technologies, which is why top companies, governments, and the military are adopting fuel cells for everyday use.  Below is a list of the major benefits that fuel cells provide."

Controlling factor of electric power.

"Pollution free production of energy. Since geothermal energy does not require fossil fuels to be burned, production of electricity using this type of energy can be considered as pollution free. Sometimes, there is the tendency that this could release some harmful gases from beneath the earth that might actually be harmful. However, these gases could be contained."

"Mills using tidal power can be dated back to 12th century Europe, a technology that followed colonists to the Americas."