Renewable energy
Geothermal Energy
Renewable heat from within the Earth, used directly for heating and bathing or converted to electricity — a constant, weather-independent energy source.
Definition
Geothermal energy is heat originating inside the Earth, produced largely by the slow decay of radioactive particles and continuously replenished, making it renewable. It is harnessed directly for bathing, space heating, and industrial heat, or converted to electricity in geothermal power plants where high-temperature resources are accessible.
References
definition and uses
Overview
What it means
Unlike solar and wind, geothermal provides continuous, dispatchable energy with a small land footprint. Conventional plants tap hydrothermal reservoirs near tectonic plate boundaries; enhanced geothermal systems and deep closed-loop designs aim to expand viable geography, while ground-source heat pumps use shallow geothermal energy for efficient building heating and cooling almost anywhere.
How it is used
The term spans utility-scale power (Iceland, Kenya, Indonesia, the western US), district heating, and building heat pumps; policy support increasingly treats geothermal as a pillar of firm clean power.
Why it matters
Decarbonised electricity systems need firm low-carbon capacity, and decarbonised heat needs renewable heat sources; geothermal is one of the few options that can supply both. **Note:** 1195 Geothermal power merges into this entry as the electricity-generation application of the same resource.
Review
Public comments appear only after editor acceptance. Draft comments stay in the review queue.
Reviewers choose the definition or an overview paragraph, leave a comment or replacement, and attach evidence or a source link.
Editors compare reviewer cards side by side. AI may help find agreement, conflicts, unsupported claims and possible source issues.
Only an editor-accepted synthesis changes the public page. Reviewer identities are shown only with consent and an editorial decision to attribute them.
Submitted reviews stay private until an editor decides whether to accept and attribute them.
Contribute to this entry
Help improve this definition
Your contribution is private while it is checked. Nothing changes on this page unless an editor accepts it.
Loading verified endorsements… Endorsements are not votes and never determine publication.
Endorse this definition
Endorse the exact version shown here. This is not a vote, and publication remains an editorial decision.
Review board
Comment on a specific line. Each reviewer stays separate until an editor accepts a merged draft.
Each person comments on the definition or overview in their own draft card, with role, evidence and suggested wording kept together.
AI can compare comments against the current text, flag conflicting claims, surface missing evidence and identify where reviewers agree.
An editor merges compatible suggestions into a draft change, checks sources, records disagreements and decides what can be published.