What is geothermal energy used for in daily life? From heating homes to powering cities, explore the everyday applications of Earth's heat.
Geothermal energy is used in more ways than most people realize. It is not just power plants in faraway places. It is in homes, schools, farms, and factories.
Some uses are ancient. People have bathed in hot springs for thousands of years. Some uses are modern. Heat pumps quietly heat and cool millions of buildings.
This is the most common everyday use.
Geothermal heat pumps are installed in homes across the world. Pipes are buried in the yard. Fluid circulates through the pipes. In winter, it absorbs heat from the ground. In summer, it releases heat into the ground.
The homeowner sees a smaller energy bill. The system is quiet. It lasts a long time. And it works in almost any location.
More than a million US homes use geothermal heat pumps. The number is growing fast.
Geothermal power plants supply electricity to cities.
In Iceland, geothermal plants provide about 30 percent of the country’s electricity. The rest comes from hydropower. Combined, Iceland runs almost entirely on renewable energy.
In the United States, geothermal plants in California and Nevada supply electricity to millions of homes. The Geysers in California powers San Francisco’s public transit system.
In Kenya, geothermal provides about 45 percent of electricity. This keeps power affordable and reliable.
Here is what geothermal energy is used for in simple terms.
Your school. Your school might have a geothermal heat pump. It keeps your classroom warm in winter and cool in summer. Pipes in the playground help make that happen.
Your food. Some tomatoes are grown in greenhouses heated by geothermal water. Even in winter, farmers can grow fresh vegetables.
Your electricity. Some of the electricity you use might come from geothermal power plants. It travels through wires from far away.
Hot pools. Some swimming pools are heated with geothermal water. The water is warm and comes from underground.
Geothermal energy is part of your life. You just might not see it.
Here are specific everyday applications.
District heating. Hot geothermal water is piped to multiple buildings. Reykjavik’s system heats 95 percent of buildings. Paris heats 200,000 homes. Boise has a system from 1893.
Greenhouses. Geothermal heated greenhouses grow food in cold climates. Hungary grows tomatoes and peppers year round. Iceland grows bananas using geothermal heat.
Fish farming. Warm water helps fish grow faster. Catfish, tilapia, shrimp, and prawns are raised in geothermal heated water. New Zealand’s prawn farm uses wastewater from a power plant.
Sidewalk heating. In some places, geothermal water runs through pipes under sidewalks. This melts snow and ice. No shoveling needed.
Swimming pools. Many public pools use geothermal water for heating. It keeps the water warm without burning fossil fuels.
Factories and farms use geothermal heat directly.
Food dehydration. Drying fruits and vegetables.
Milk pasteurization. Heating milk to kill bacteria.
Lumber drying. Drying wood for construction.
Gold mining. Extracting gold from ore.
Sterilization. Cleaning equipment with steam.
These processes need steady heat. Geothermal provides it reliably and cheaply.
Hot springs are the most enjoyable use of geothermal energy.
People visit geothermal spas for relaxation. The Blue Lagoon in Iceland is world famous. Japan’s onsens are a cultural tradition. Many countries have developed geothermal resorts.
Some people cook food in geothermal areas. In Iceland, bread is baked by burying it in hot ground. In New Zealand, food is steamed over hot springs.
Farmers love geothermal energy.
Greenhouses. Warm water keeps plants warm. Flowers, vegetables, and fruits grow year round.
Soil heating. Pipes under the soil keep roots warm. This helps plants grow faster.
Fish farming. Warm water speeds up growth. Farmers can produce more food in less time.
Crop drying. Geothermal heat dries grains and fruits after harvest.
Hungary is the best example. About 80 percent of the country’s geothermal energy goes to agriculture.
Ask students to find geothermal energy in their own community. Is there a heat pump at school? A hot spring nearby? A district heating system?
If there is no local example, have them design one. How would they use geothermal energy in their town? What buildings would they heat? What would they grow in greenhouses?
Last updated: June 15, 2026
What is the most common use of geothermal energy?
How many geothermal heat pumps are installed in the US?
What percentage of Iceland's homes use geothermal heating?
Which city has used geothermal district heating since 1893?
What food can be cooked with geothermal heat?
Answers: B: Geothermal heat pumps, C: About 1 million, D: About 90 percent, B: Boise, B: Bread, eggs, and meat
What is geothermal energy used for in everyday life?
Geothermal energy is used for electricity, home heating and cooling with heat pumps, hot water, greenhouse heating, fish farming, and industrial processes. Many people use it without knowing.
How do homes use geothermal energy?
Homes use geothermal heat pumps for heating and cooling. Some homes use district heating, where hot geothermal water is piped in. Heat pumps are the most common residential use.
What is geothermal energy used for in schools?
Many schools use geothermal heat pumps for heating and cooling. The stable ground temperature keeps classrooms comfortable year round. It saves schools money on energy bills.
Can geothermal energy be used for cooking?
Yes. In Iceland and New Zealand, some people cook food using geothermal heat. Food is placed in geothermal ovens or steamed over hot springs. This has been done for centuries.
What is the most common use of geothermal energy?
Geothermal heat pumps are the most common use. More than a million are installed in the United States alone. They are used in homes, schools, offices, and commercial buildings.
