Tamil Nadu Electricity Board

Tamil Nadu Electricity Board
Name	Tamil Nadu Electricity Board
Native name	தமிழ்நாடு மின்சார வாரியம்
Type	State-owned enterprise
Industry	Electricity generation, Electricity transmission, Electricity distribution
Founded	01 July 1957
Headquarters	Chennai, Tamil Nadu, India
Key people	Rajesh Lakhoni (Chairman & Managing Director)
Area served	Tamil Nadu
Products	Electricity
Services	Electric power transmission, Electricity retailing
Owner	Government of Tamil Nadu
Divisions	Tamil Nadu Generation and Distribution Corporation, Tamil Nadu Transmission Corporation

Tamil Nadu Electricity Board. It is the primary state-owned utility responsible for electricity generation, transmission, and distribution across Tamil Nadu. Established in 1957, it has played a pivotal role in the industrial development and electrification of the state. Following the Electricity Act, 2003, the board was restructured into separate entities for generation, distribution, and transmission, though it continues to operate as a cohesive power system.

History

The board was formed on 1 July 1957 through an act of the Tamil Nadu Legislative Assembly, integrating several smaller power systems. Early milestones included the commissioning of the Mettur Dam hydroelectric project and the Neyveli Lignite Corporation thermal plants. A significant phase of expansion occurred in the 1970s with the establishment of large thermal power stations like the North Chennai Thermal Power Station and the Tuticorin Thermal Power Station. The Electricity Act, 2003 mandated unbundling, leading to the creation of Tamil Nadu Generation and Distribution Corporation and Tamil Nadu Transmission Corporation in 2010, though the overarching Tamil Nadu Electricity Board framework remains.

Organizational structure

The board operates under the administrative control of the Government of Tamil Nadu's Energy Department. It is governed by a board of directors headed by a Chairman and Managing Director, currently Rajesh Lakhoni. The organization is functionally divided into the generation and distribution company, Tamil Nadu Generation and Distribution Corporation, and the separate Tamil Nadu Transmission Corporation. Operational control is decentralized through regional offices in cities like Chennai, Coimbatore, Madurai, and Tiruchirappalli, which oversee numerous district-level divisions.

Generation, transmission, and distribution

The state's generation mix includes significant contributions from renewable sources, particularly wind power, alongside conventional thermal plants like the Ennore Thermal Power Station and Mettur Thermal Power Station. It also receives power from central sector stations such as the Kudankulam Nuclear Power Plant and Neyveli Lignite Corporation. The transmission network, managed by Tamil Nadu Transmission Corporation, includes high-voltage lines connecting to the Southern Region grid operated by the Power Grid Corporation of India. Distribution is handled through a vast network of substations and feeders serving millions of consumers, from domestic users to major industries in Hosur and Tiruppur.

Key projects and initiatives

Major generation projects include the supercritical North Chennai Thermal Power Station Stage-III and the Udangudi Thermal Power Project. The board has aggressively promoted solar power, including large parks in Ramanathapuram district. Key initiatives involve the Restructured Accelerated Power Development and Reforms Programme for network improvement and the Integrated Power Development Scheme for strengthening sub-transmission systems. It has also implemented advanced smart grid technologies and Supervisory control and data acquisition systems in urban centers like Chennai and Coimbatore.

Financial performance and tariffs

Financial health has been periodically strained by high purchase costs from independent power producers and renewable purchase obligations. Tariffs are regulated by the Tamil Nadu Electricity Regulatory Commission, which periodically reviews petitions for revisions. The board has historically provided subsidized power for agriculture and domestic consumers, with cross-subsidization from industrial and commercial categories. Efforts to improve finances include the Ujwal DISCOM Assurance Yojana scheme and reducing Aggregate technical and commercial losses through better metering and billing efficiency.

Challenges and controversies

Persistent challenges include meeting peak demand, managing the intermittent nature of wind energy, and upgrading aging infrastructure. The board has faced controversies over issues such as alleged coal allocation irregularities, protests against new transmission lines, and disputes with wind power generators over grid connectivity norms. Environmental concerns have been raised regarding emissions from older thermal plants and land acquisition for projects like the Cheyyur Ultra Mega Power Project. Managing the financial burden of subsidies while ensuring reliable supply remains a critical ongoing issue.

Category:Electric power companies of India Category:Government-owned companies of Tamil Nadu Category:1957 establishments in Tamil Nadu