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States » EastPosted at: May 5 2025 9:10PM


CESHS completes Northeast India’s first geothermal production well in Dirang

Itanagar, May 5 (UNI) In a historic milestone for sustainable energy in Northeast India, the Centre for Earth Sciences and Himalayan Studies (CESHS), under the Department of Science & Technology, Government of Arunachal Pradesh, has successfully drilled the region’s first geothermal production well in Dirang, West Kameng district.
The achievement follows two years of intensive geochemical and structural surveys of hot springs across western Arunachal Pradesh and marks a major milestone in the region’s quest for sustainable energy and represents a first-of-its-kind initiative in the Northeast.
Once operational, the geothermal energy will power eco-friendly solutions including fruit, nut, and meat drying, space heating, and controlled-atmosphere storage systems, aimed at enhancing local agricultural and living conditions in the high-altitude terrain of Arunachal Pradesh, official sources said.
The project is the result of a global scientific collaboration involving CESHS, the Norwegian Geotechnical Institute (NGI), Oslo, Iceland’s Geotropyehf, and the drilling team from Guwahati Boring Service (GBS). Through advanced geochemical analysis, the Dirang region has been identified as a medium- to high-enthalpy geothermal zone, with reservoir temperatures estimated at 115°C—making it highly suitable for direct-use geothermal applications.
Structural and geological mapping in the Dirang area revealed quartzite overlying schist at tectonic contacts near the Main Central Thrust (MCT), consistent with extensional normal faults found elsewhere in the Higher and Lesser Himalayas. These insights have enabled precision drilling to access the geothermal reservoir with minimal environmental impact.
Supported by the Government of Arunachal Pradesh and Ministry of Earth Sciences, the project could pave the way for Dirang to become India’s first geothermal-powered city for space heating.
“This pioneering development paves the way for a new era of clean energy in the Himalayas,” said CESHS Director Tage Tana. “It demonstrates the potential of geothermal resources in transforming regional livelihoods while ensuring environmental sustainability.”
The geothermal-powered drying and storage facilities are expected to be operational soon, setting a benchmark for sustainable energy use in mountainous regions.
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