Berkeley Lab Develops High-Temperature Seismometer for Continuous Geothermal Monitoring
Scientists at Lawrence Berkeley National Laboratory have achieved a significant breakthrough in geothermal energy monitoring by successfully deploying a high-temperature seismometer at Fervo Energy’s Cape Station in Utah. From late July 2025 to February, the team continuously monitored microseismic activity nearly 7,000 feet underground, where temperatures reached 338°F. This marks the world’s longest recorded measurement at such extreme temperatures, surpassing previous records of 302°F. The technology enables detailed, long-term observation of Enhanced Geothermal Systems (EGS), helping scientists understand rock fracture formation and manage induced seismicity risks. By providing real-time data on reservoir behavior, the system allows for better control of fluid injection and circulation, which is crucial for efficient steam production and electricity generation. This advancement supports Fervo Energy’s goal to deliver 100 MW of continuous geothermal power by 2026, scaling up to 500 MW. The development of sensors capable withstanding harsh subsurface conditions is considered a game-changer for expanding safe and effective geothermal energy production in the American West and beyond.
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Berkeley Lab Develops High-Temperature Seismometer for Continuous Geothermal Monitoring
Scientists at Lawrence Berkeley National Laboratory have achieved a significant breakthrough in geothermal energy monitoring by successfully deploying a high-temperature seismometer at Fervo Energy’s Cape Station in Utah. From late July 2025 to February, the team continuously monitored microseismic activity nearly 7,000 feet underground, where temperatures reached 338°F. This marks the world’s longest recorded measurement at such extreme temperatures, surpassing previous records of 302°F. The technology enables detailed, long-term observation of Enhanced Geothermal Systems (EGS), helping scientists understand rock fracture formation and manage induced seismicity risks. By providing real-time data on reservoir behavior, the system allows for better control of fluid injection and circulation, which is crucial for efficient steam production and electricity generation. This advancement supports Fervo Energy’s goal to deliver 100 MW of continuous geothermal power by 2026, scaling up to 500 MW. The development of sensors capable withstanding harsh subsurface conditions is considered a game-changer for expanding safe and effective geothermal energy production in the American West and beyond.
Berkeley Lab News Center