DEFINITION: Heat energy generated and stored in the earth. Geothermal energy is accessed by drilling water or steam wells in a process similar to drilling for oil. That steam is then converted into power much the same way as a traditional power stations, using turbines, generators and transformers.
Underground line to heat up London homes during winter
The sweltering temperatures on the tube's Northern line will soon begin keeping homes in Islington, north London, cosy through the colder months, under a scheme to harness the heat from the underground.
The 10 clean growth policy 'shortfalls' and how to address them, according to MPs
The Science and Technology Committee has published a new report warning that the UK isn't remotely close to reaching upcoming carbon budgets up to 2032, outlining 10 key policy areas that need to be addressed if the UK is to deliver on its net-zero ambitions.
SC Johnson to power US headquarters with geothermal energy
US-based consumer goods giant SC Johnson has revealed plans to use geothermal energy for the heating and cooling of its headquarters in Racine, Wisconsin.
In action: EDF's renewable energy-based renovation of a listed building
Between 2012 and 2015, EDF Energy embarked on an ambitious project to bring a listed 12th Century building into the 21st Century by installing onsite renewable systems to generate low-carbon heat, cooling and electricity.