The cost of geothermal energy, exploitation influence on environment and sustainability on heat storage have been 3 major concerns focused among the geothermal circle, which determine the replenished function of geothermal energy and its competitiveness in the energy market.

Present technology makes it possible to control satisfactorily the environmental impact of geothermal exploration. This is accomplished through reinjection of spent fluids into the reservoirs or the abatement of toxic gases (such as hydrogen sulphide) by means of special processes (e.g. the Stratford process). Geothermal energy is a benign source of energy.

Carbon dioxide is the major component of the noncondensible gases that generally accompany the steam, but its emission in to the atmosphere per kWh generated is well below the figures for natural-gas-,oil- or coal-fired power station. Hydrogen sulphide is the pollutant of major concern in geothermal development. However, even without abatement, the specific emissions of sulphur from geothermal power plants are about half of those from coal-fired plants.

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Geothermal Competitive in Markets

Geothermal to be Harmonious with Environment