MP Board · Class 10 · Science · Sources of EnergyWhat are conventional and non-conventional sources of energy? Give two examples of each. Explain why there is a growing emphasis on utilizing non-conventional sources of energy in modern times.

Definition of Conventional Sources of Energy\nConventional sources of energy are those energy sources that have been in common use for a very long time. They are generally non-renewable resources, meaning once their reserves are depleted, they cannot be replenished in a short span of time. They cause significant environmental pollution when used.

• Examples: Coal, Petroleum, and Natural Gas.

Definition of Non-Conventional Sources of Energy\nNon-conventional sources of energy are alternative sources of energy that are renewable, inexhaustible, and eco-friendly. They have been developed in recent times due to the advancement of technology and are pollution-free.

• Examples: Solar energy, Wind energy, and Tidal energy.

Reasons for Emphasis on Non-Conventional Sources

1. Depletion of Fossil Fuels: Conventional sources like coal and petroleum are finite and are depleting at an alarming rate due to excessive consumption. Therefore, we need alternative energy options to secure our future energy demands.
2. Environmental Concerns: Burning fossil fuels releases harmful greenhouse gases such as carbon dioxide, sulphur dioxide, and nitrogen oxides, leading to global warming, climate change, and acid rain. Non-conventional sources are clean and cause little to no pollution.
3. Sustainable Development: Non-conventional sources are inexhaustible and available in abundance naturally. Utilizing them ensures energy security for future generations without harming the environment.
4. Technological Advancements: With continuous research, the cost-effectiveness and efficiency of harnessing energy from sources like the sun, wind, and biomass are improving rapidly, making them practical choices for daily use.