Coal is the most abundant fossil fuel in India, accounting for over 50% of the country's total energy production.

Jharkhand has the largest reserves of coal in India, followed by Odisha, Chhattisgarh, and West Bengal.

Reliance Industries is the largest producer of natural gas in India, followed by ONGC, GAIL, and IOCL.

Gujarat has the largest reserves of natural gas in India, followed by Maharashtra, Rajasthan, and Andhra Pradesh.

ONGC is the largest producer of petroleum in India, followed by Reliance Industries, GAIL, and IOCL.

Assam has the largest reserves of petroleum in India, followed by Gujarat, Rajasthan, and Maharashtra.

Neyveli Lignite Corporation is the largest producer of lignite in India, followed by NTPC, SAIL, and CIL.

Tamil Nadu has the largest reserves of lignite in India, followed by Rajasthan, Gujarat, and Madhya Pradesh.

Solar Energy Corporation of India is the largest producer of renewable energy in India, followed by National Thermal Power Corporation, NTPC Renewable Energy, and Reliance Industries.

Rajasthan has the largest installed capacity of solar power in India, followed by Gujarat, Karnataka, and Tamil Nadu.

Tamil Nadu has the largest installed capacity of wind power in India, followed by Gujarat, Karnataka, and Maharashtra.

Arunachal Pradesh has the largest installed capacity of hydropower in India, followed by Sikkim, Himachal Pradesh, and Uttarakhand.

Nuclear Power Corporation of India is the largest producer of nuclear power in India, followed by Bharat Heavy Electricals Limited, Larsen & Toubro, and Tata Power.

Tamil Nadu has the largest installed capacity of nuclear power in India, followed by Maharashtra, Gujarat, and Rajasthan.

GeoThermal Energy Development Corporation is the largest producer of geothermal energy in India, followed by National Thermal Power Corporation, NTPC Renewable Energy, and Reliance Industries.