What Is Geothermal Energy?

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    Guide Author

    James Longley

    Managing Director

    min read
    Last Updated October 26, 2021

    Climate change has become one of the most important topics of the past few years. With significant climate events taking place recently, many of us are becoming more environmentally sustainable and aware of our habits. Even small alterations to our daily home and work lives can help benefit the environment so we can safeguard the planet’s future. It can be easier to track how much energy you use at home by using an energy monitor or closely observing your bills, but how can you become more energy efficient at work? Using for your business will help both the environment, but also improve your corporate social responsibility.

    Learning more about renewable energy is a great way for businesses to become more . As a source of renewable energy, geothermal power has been used for thousands of years by various countries to heat their homes and cook their meals. In the Palaeolithic Age, geothermal energy was used for bathing and heating. Even today, monkeys living in the mountainous regions of Japan use geothermal energy to bathe in the heated water from hot springs to keep themselves warm in the winter months. But what is geothermal energy exactly?

    Geothermal energy is simply power derived from the Earth’s internal heat. Beneath the Earth’s crust, the source of geothermal energy is held in fluids and rocks. This energy can be found deep below in magma (extremely hot molten rock), but also in shallow ground just below the surface. First used in Italy in 1904, geothermal energy has been an expanding and consistent source of energy. The International Renewable Energy Agency (IRENA) has documented that the use of geothermal energy grew from 10GW worldwide in 2010 to 13.3GW in 2018.

    What Is Geothermal Energy?

    Uses of geothermal energy

    The uses of geothermal energy can be divided into three categories: direct use applications, geothermal heat pumps and electric power generation.

    Direct use application
    The use of heated water is the most common direct use of geothermal energy. Water ranging from 50-150˚C is pumped from the ground to warm single buildings, as well as whole towns from a central supply source. Most notably, outdoor spas and pools, such as those found in Iceland and Japan, use the naturally occurring geothermal resources to provide heated bathing. Geothermal energy can also be used for cooking, drying fruits, vegetables and timber, and large-scale snow melting.

    Geothermal heat pumps
    These heat pumps heat buildings in the winter and cool them in the summer. The geothermal heat pump system is made up of a heat exchanger (a system of pipes buried in the ground) and a pump. The heat exchanger transfers heat between the ground and the air by circulating heated water and antifreeze through the pipes. The pump is reversed for the cold months when it’s needed for extra warmth. The geothermal heat pumps system is extremely energy-efficient and produces less pollution.

    Electric power generation
    Geothermal power plants produce electricity by using steam to drive turbines. As a source of renewable energy, geothermal power plants are excellent at producing power for a district by disturbing the electricity created through a central system.

    Advantages of geothermal energy

    There are many advantages of geothermal energy, the biggest one being that it is good for the environment. Geothermal energy can be extracted from the earth and produce electricity with very minimal emissions. It is also a reliable source of renewable energy. Geothermal power provides a constant source of energy all year long, unlike other renewable energy sources, such as solar, wind or biomass.

    That’s the end to our guide on: what is geothermal energy? We hope you have learned more about geothermal energy and have become inspired to use green energy for your business. To help protect the environment and save money on your prices, let Utility Bidder search the market for you to provide the best deals and services.

    Advantages of geothermal energy

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