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The adjective ‘geothermal’ derives from the Greek words ‘geo’ (meaning earth) and ‘therme’ (meaning heat.) Geothermal energy has been around since the earth’s formation billions of years ago and can be used as a renewable energy source to provide heating or electricity.

This section takes a look at the many different topics relating to geothermal energy and how this can be used to heat our homes or generate electricity.


Geothermal Power Station Diagram

Ever wondered how a geothermal power station converts geothermal energy into electricity? This article provides details of this process including a diagram of a geothermal power station.

A geothermal power station.

Geothermal Heating Pros & Cons

Read about the pros and cons of geothermal heating systems, focusing on the use of ground source heat pumps. Are these systems able to perform as we think?

A geothermal heating system been installed.

How Does Geothermal Energy Work?

A look at how geothermal energy works, including how geothermal energy can be extracted from the earth and turned into either an electricity or heating source.

Geothermal piping system showing how this system works.

The Cost of Geothermal Energy

There are numerous costs associated with the use of geothermal energy including both financial and ecological costs. This article takes a look at some of these aspects.

A pile of money representing the cost of geothermal energy.

Geothermal Energy Facts

Take a look at some of the facts surrounding geothermal energy including how we use it and the history of this energy source.

Geothermal activity in New Zealand.

Geothermal Power Plants

Geothermal power plants have the capability to transform geothermal energy into useable electricity in a variety of ways.

Large metal tubes commonly found on geothermal power plants.