Geothermal energy comes from the heat stored in the Earth’s core, about 4,000 miles/ 1,609 kilometers beneath the surface, and heat from the sun warming the Earth. The word geothermal originates from the Greek words geo (earth) and therme (heat).
To mine or tap this heat, heat pumps are connected to loops of piping buried in the grounds. The power is hence gathered and can be utilized to heat houses in the wintertime or carry out other beneficial performs. Typically, water boils at 100 degrees Celsius. However, pressures are considerably larger underground, and water remains liquid at larger temperatures. The boiling point of water remains increases to about 230, 315, and 600 degrees Celsius at the depth of 300 1525, and 300 meters respectively. In the course of the drilling procedure, where the drilling taps into water that is above 175 degrees, the water can be employed to drive electrical generators.
Most geothermal energy is created in 4 states-California, Nevada, Utah, and Hawaii. Right now the total installed capacity of geothermal energy plants in the United State is 3,200 megawatts (MW) That is the power equivalent of three nuclear power plants. American geothermal power plants range in size from a handful of hundred kilowatts to a lot more than 130 megawatts.
The standard size variety for a geothermal energy plant is from ten to 250 MW. A single MW (eight,760,000 kWh) of electricity will meet the requirements of around 1,000 households for a single year. Meeting a 250 MW creating plant output from fossil fuels would require 1,288,994 bbls of oil, or 7,227,722 mcf of all-natural gas, or 280,769 tons of coal per year.
When it comes to the price, geothermal plants are incredibly competitive in geologically appropriate places. Geothermal power plants do have high initial expenses to construct and drill new facilities, but those costs are equalized due to no fuel expenses. Geothermal plants are presently competitive with coal energy plants, generating them one of the cheapest power providers. Also with every single new project, the expense is decreased due to the competitors of the coal power plants. Obtaining and exploiting geothermal resources depends on locating the best creating hydrothermal wells, which depends on availability. (Energy Shoppers Edge, 1).