Geothermal
Renewable energy technology is continuously evolving with the goal of reducing the emission of greenhouse gases and lowering cost. Geothermal energy is a form of renewable energy generated by heat stored beneath the earth's surface or the collection of absorbed heat in the atmosphere and oceans. The primary applications of geothermal energy are electricity generation, direct use of heat, and ground source heat pumps. Direct use includes applications such as heating buildings or greenhouses and drying foods, whereas ground source heat pumps are used to heat and cool buildings using surface soils as a heat reservoir.

The underground temperature maintains at a relatively constant temperature between 10°C to 16°C all year round. Geothermal heat pump technology can tap the energy from the earth's surface and drive a heating and air conditioning system for both residential and commercial uses. In Winter (heating mode), heat is extracted from the fluid by the heat pump and distributed to the home or building. In Summer (cooling mode), the process is reversed. The relatively cool fluid absorbs heat from the building and transfers it to the ground.

From an environmental standpoint, the use of geothermal energy is clean and safe for the surrounding environment. It is also sustainable because the hot water used in the geothermal process can be re-injected into the ground to produce more steam. From an economic view, geothermal energy is extremely price competitive and reduces reliance on fossil fuels.