Articles on Geothermal energy

Displaying all articles

The test site in Iceland where gases from a geothermal power plant are pumped underground and converted into minerals by reacting with basalt stone. Juerg Matter

Putting CO2 away for good by turning it into stone

Storing waste CO2 in rock? Results from a test site at a geothermal plant in Iceland show that CO2 mixed with water can be turned into minerals in locations with basalt volcanic rock.
Investment in technologies beyond the existing wind and solar could stagnate in the face of the government’s reduced Renewable Energy Target. Rolandg/Wikimedia Commons

How will the reduced Renewable Energy Target affect investment?

After months of deadlock, a deal has finally been reached to reduce the Renewable Energy Target, ending the uncertainty for industry but also risking an already sparse pipeline of future projects.
Increasing Chinese investment in renewables is driving costs down. The Danish Wind Industry Association / Vindmølleindustrien/Flickr

Chile’s mines set hot pace on renewables — Australia take note

Mining is the fourth-largest energy consumer in Australia, using roughly 10% of Australia’s total. Some of this comes from the electricity grid — but much is supplied offgrid in the form of diesel and…
Coal seam gas is only one issue for managing one of Australia’s most important geological resources. AAP Image/Dean Lewins

Coal seam gas is just the latest round in an underground war

In a recent article on The Conversation, Queensland coal seam gas (CSG) researchers argued that the industry is progressing faster than the science, leading to concerns over fugitive emissions and impacts…
CSIRO is contending with a A$111 million hit to its budget over four years. Bidgee/Wikimedia Commons

CSIRO risks backing the wrong horse as it reacts to budget cuts

What happens to CSIRO when the federal government decides to strip away A$111 million over four years from its A$733 million annual contribution to the organisation’s budget? We are beginning to find out…
Deep underground the coal is off - but the heat is still on. Ashley Dace

Underground water heat will aid bid to hit renewable targets

Solar and wind power rightly receive a lot of attention as we struggle to ramp up renewable electricity and move away from fossil fuels. But in a damp, blustery island such as ours, generating heat is…
The Champagne Pool at Wai-O-Tapu, New Zealand: hot water for free. Rebecca Naden/PA

Tapping into the energy that lies deep underground

Geothermal energy is derived from heat produced by the decay of radioactive elements within the Earth’s molten core, where temperatures reach 6000°C around 6000km below the ground. This heat naturally…
With improvements in enhanced geothermal systems technology the earth’s heat could become a major electricity generator. Flickr/xavierbt

Explainer: what is geothermal energy?

Geothermal means, literally, “earth heat”. The temperature of the earth increases as we drill deeper towards its core. We can use that heat for energy by circulating water through hot subterranean reservoirs…
The earth’s crust might be our most valuable resource yet. prawnpie/Flickr

Earth’s most valuable resource is the space between the sand

For centuries, the shallow parts of the earth’s crust have provided us with fuels to burn in our fireplaces, foundries and generators. Now, as we try to break free from our reliance on some of the dirtier…

Top contributors