Ladakh Gets Clean Energy Boost As ONGC Geothermal Project Extended
Under the revised memorandum of understanding, the Oil and Natural Gas Corporation will establish a one Megawatt (MW) pilot geothermal power plant in Puga valley and prepare a detailed project report for large-scale commercial exploitation of geothermal resources in Ladakh. The pilot will inform resource assessment and commercial planning for the detailed project report. ONGC Energy Centre will deepen the existing geothermal well to 1,000 metres during the 2026 working season and subsequently drill another well of similar depth in the next phase. Testing, evaluation and commissioning of the pilot plant are expected during the 2026-27 financial year.
The Puga valley and Chumathang lie within the Himalayan geothermal belt, where tectonic activity generates intense underground heat and prior drilling has tapped high-pressure steam and hot fluids. Officials reported that drilling in 2025 reached a depth of 405 metres and produced temperatures exceeding 200 degrees Celsius at around 400 metres. Geothermometric studies have indicated subsurface temperatures in excess of 240 degrees Celsius, considered suitable for power generation. These measurements will guide testing, evaluation and optimisation of the pilot plant before any commercial phase.
Authorities expect the geothermal initiative, alongside an expanding solar programme, to reduce reliance on conventional fuels, cut carbon emissions and boost the Union Territory’s credentials as a renewable energy hub. Saxena characterised the project as strategically important and said it would strengthen energy security and contribute to a vision of making the region carbon neutral and environmentally sustainable.