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Electricity sector in India

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Electricity in India is generated by both public and private sector utilities, transmitted through a unified national grid, and distributed primarily by state-owned distribution companies (DISCOMs).

The sector has undergone significant reforms since the Electricity Act of 2003, which introduced competition, open access, and independent regulation. Despite rapid growth in generation and transmission capacity, the distribution segment continues to face financial stress due to high technical and commercial losses.

The sector emitted 1234.2 million tonnes of CO2 in FY 2024-25. As part of its commitment to achieve net-zero emissions by 2070, India plans to install 500 GW of non-fossil fuel capacity by 2030 and 60% non-fossil capacity by 2035.

History

Electricity was first introduced in India during British rule in 1879 with the demonstration of electric light in Kolkata, followed by the country's first hydroelectric power station at Darjeeling in 1897 and first coal power plant at Kolkata in 1899. Electricity supply was largely developed by private companies serving urban centers and industries.

In 1902, British India had the most powerful transmission line of that time, a 92 miles long 30 kV connection from Shivanasamudram hydroelectric plant to the Kolar Gold Fields.

After independence in 1947, the Electricity (Supply) Act of 1948 established the Central Electricity Authority (CEA) for planning at central level and State Electricity Boards (SEBs) at state level. SEBs oversaw generation, transmission, and distribution within each state. The sector expanded rapidly through successive Five-Year Plans, with coal and large hydroelectric projects forming the backbone of India's power system.

However, not every state was rich in coal or hydro resources. This led them to depend on diesel generators. In 1960s, regional grid was conceptualized to supplement power from neighboring states.

By the 1970s, REC was established to finance rural electrification. Generation was not able to keep up with growing demand. This, along with the oil price shocks led the central government to nationalize coal mines and establish CIL, NTPC and NHPC.

In the 1980s, MNRE was established to explore non-conventional energy sources. Rural electrification accelerated. However, due to votebank politics by state governments, tariffs were kept low which strained their finances. In order to further develop the sector, PFC was established for financing needs.

By the 1990s, the idea of a national grid was conceptualized and led to the establishment of PGCIL. The 1991 economic liberalization led to policy reforms. It allowed private participation in generation (via licenses) and the Electricity Regulatory Commissions Act, 1998 created independent regulators at central (CERC) and state level (SERC).

In the 2000s, the Electricity Act, 2003 consolidated prior legislation, mandated the unbundling of SEBs. Generation and distribution was de-licensed to encourage competition, and open access was introduced in transmission.

In the 2010s, all the five regional grids were fully synchronized to form a single national grid. Large-scale electrification programmes such as DDUGJY and Saubhagya extended electricity access to nearly all households. India also pursued renewable energy deployment goals.

In the 2020s, the nation achieved 100% household electrification, opened nuclear power to private sector, while continuing to expand its generation capacity, with renewables making up about 87% of total additions between FY 2020-21 and FY 2025-26.

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