1) India faces challenges of rising energy demand, environmental pollution, and greenhouse gas emissions that threaten sustainable development, so alternative energy strategies are needed.
2) Sustainable development aims to meet present needs without compromising future generations' ability to meet their own needs, and India has significant coal reserves but also potential for renewable energy like solar and wind.
3) The document discusses India's current use of coal, oil, gas, and nuclear power and potential for increasing hydroelectric, wind, solar, geothermal, tidal, and biomass energy to promote sustainable development through a balanced energy strategy.