![Proposed geothermal energy solution could turn aquifers into huge batteries](https://static.techspot.com/images2/news/ts3_thumbs/2023/04/2023-04-12-ts3_thumbs-43d.jpg)
Humans have dug wells to retrieve drinking water from aquifers for thousands of years. However, since groundwater maintains relatively stable temperatures, it can store and exchange heat. A new study in Applied Energy claims that many structures could heat and cool themselves using groundwater, turning aquifers into renewable energy sources.