Conventional Sources of Energy
Conventional sources of energy are those sources that have been in use for a long time and are widely used. These sources are generally non-renewable and include fossil fuels such as coal, oil, and natural gas. The following are the main characteristics of conventional sources of energy:

- Non-Renewable: Conventional sources of energy are non-renewable, meaning that they are finite and will eventually run out.

- High Energy Density: Conventional sources of energy have a high energy density, which means that they can produce a lot of energy in a small amount of space.

- Cost-Effective: Conventional sources of energy are generally cost-effective and have been the main source of energy for many years.

- Negative Environmental Impact: Conventional sources of energy have a negative environmental impact. The burning of fossil fuels releases greenhouse gases, which contribute to climate change.

Non-Conventional Sources of Energy
Non-conventional sources of energy are those sources that have been developed in recent years and are renewable. These sources include solar, wind, hydro, geothermal, and biomass. The following are the main characteristics of non-conventional sources of energy:

- Renewable: Non-conventional sources of energy are renewable, meaning that they can be replenished over time and will not run out.

- Low Energy Density: Non-conventional sources of energy have a low energy density, which means that they require large areas to produce the same amount of energy as conventional sources.

- Expensive: Non-conventional sources of energy are generally more expensive than conventional sources, but their costs are decreasing as technology advances.

- Positive Environmental Impact: Non-conventional sources of energy have a positive environmental impact. They produce little or no greenhouse gases and do not contribute to climate change.

Difference between Conventional and Non-Conventional Sources of Energy
The main differences between conventional and non-conventional sources of energy are:

- Conventional sources of energy are non-renewable, while non-conventional sources of energy are renewable.

- Conventional sources of energy have a high energy density, while non-conventional sources of energy have a low energy density.

- Conventional sources of energy are generally cost-effective, while non-conventional sources of energy are more expensive.

- Conventional sources of energy have a negative environmental impact, while non-conventional sources of energy have a positive environmental impact.