Which one of the following is the largest source of electricity in India?

Thermal power plants are the largest source of electricity in India, both in terms of installed capacity and actual generation. As of June 2025, thermal power remains dominant, accounting for approximately 240 GW or 50.52% of India's total installed capacity [1]. Within the thermal sector, coal-fired generation is the primary contributor, typically accounting for about 75% of India's total electricity output. While India has made significant strides in renewable energy, reaching a milestone where non-fossil fuel sources (including solar, wind, hydro, and nuclear) comprise over 51% of installed capacity [3], thermal energy continues to play a dominant role in meeting the country's base load demand. Other sources like hydropower (12%), renewable energy (23%), and nuclear energy (2%) follow thermal power in the overall energy mix [3].

Sources

1. [1] https://static.pib.gov.in/WriteReadData/specificdocs/documents/2025/jun/doc2025622575501.pdf
2. [3] https://www.pib.gov.in/PressReleasePage.aspx?PRID=2183866