Question

Mention any three limitations of the usage of conventional sources of energy in power sector.

Answer 1

1. Exhaustibility: Conventional fuels (coal, oil, gas) are non‑renewable and cannot be regenerated, so reserves will deplete over time.
2. Air pollution and greenhouse‑gas emissions: Combustion releases CO₂ and pollutants (NO_x, SO_x, particulates) that drive global warming, acid rain and respiratory illness.
3. Waste and thermal impacts: Thermal plants produce large amounts of waste heat, fly ash and trace metals (e.g., mercury); waste heat and effluents can harm aquatic life and ash/solids contaminate land.