Wire · technology
Study Explores Geothermal Reservoirs for Underground Energy Storage
◆ Sectors
◆ Geography
◆ Source
◆ Verified
Fusion42 · 9 October 2026 · Fusion42 review
A preliminary study indicates that underutilized geothermal reservoirs could enable compressed air and CO2 underground energy storage, with geothermal heating boosting round-trip efficiency by 5-6 percentage points. However, significant limitations in CO2 storage performance require further research to confirm feasibility for large-scale renewable energy balancing.
This Wire brief sits within Fusion42's coverage of Clean Energy.
◆ ◆ The Wire takeaway
You can now explore geothermal reservoirs as sites for underground energy storage to improve renewable energy use and grid balancing. Testing storage options beyond compressed air, especially for CO2, is needed to unlock more reliable long-term solutions.
◆ Coverage
1 source · 9 Oct 2026
◆ Related on Wire
◆ Topics