The power development programmes that are possible in Tamilnadu are largely based on

Question

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Option C: Nuclear power plants

Explanation & Concepts:
Tamil Nadu has strategically invested in nuclear power generation to overcome the limitations of its fossil fuel resources and geographical constraints for large-scale hydro-electric projects. The state hosts significant nuclear capacity, specifically the Kudankulam Nuclear Power Plant (KNPP), which serves as a massive base-load power contributor to the regional grid.

Working Principle: Nuclear power plants operate via the controlled fission of heavy nuclei, typically Uranium-235. The energy released by fission heats water in the reactor core to produce high-pressure steam. This steam drives a turbine coupled to an alternator, converting thermal energy into electrical energy according to the principle of electromagnetic induction.

Key Formulas: $E = \Delta m c^2$ — Mass-energy equivalence principle governing nuclear release; $\eta = \frac{W_{out}}{Q_{in}}$ — Thermal efficiency of the power cycle

Key Points: Tamil Nadu is home to the largest operational nuclear power station in India, the Kudankulam Nuclear Power Plant.; Nuclear power acts as a crucial 'base-load' station due to its high capacity factor and fuel density.; The state maintains a balanced energy mix including wind, solar, and thermal, but nuclear provides grid stability.; Fission processes in light water reactors (LWR) are highly efficient for continuous power generation.

Advantages: High energy density of nuclear fuel; Near-zero greenhouse gas emissions during operation; Reliable base-load capacity for industrial grid demand

Disadvantages: High initial capital investment; Radioactive waste management challenges; Long gestation period for plant construction

Applications: Base-load grid supply; Large-scale industrial power utility; Desalination integration projects

Additional Info: Kudankulam NPP, located in the Tirunelveli district, currently houses multiple VVER-1000 reactors.. Steam power (Option A) is widely used via coal, but is hampered by fuel logistics and environmental regulations.. Hydro (Option B) is limited in Tamil Nadu due to the seasonal nature of rivers in the Kaveri and Western Ghats catchments.

Answer: C is correct — Tamil Nadu has significantly prioritized nuclear power development as a stable, high-capacity base-load solution for its growing industrial energy demand.

Exam Tip: When analyzing regional power capacity, remember that 'Base-load' implies plants that run 24/7 (Nuclear/Thermal), while 'Peak-load' plants handle fluctuations (Hydro/Gas).

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Option A: Steam power plants

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Option B: Hydro-electric power plants

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Option D: Diesel power plants

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