Despite efforts to maximise the prevention, reduction, reuse and recycling of wastes, there will always be significant waste for which these options are not viable. Much of this residual waste is comprised of biomass, derived from plant and animal matter. This is potential fuel that can deliver renewable energy.
Waste as an energy resource must be seen in the broader context of energy supply in the world. It has the potential to be an increasingly important energy source, particularly as old coal-fired and nuclear power stations are decommissioned.

• W2E can help fill the ‘energy gap’. India being second most populated country in the world and the population growing . Increasing population generates more waste , Increasing population demand more electrcity. Hence waste to energy can solve both the civic issues...
• W2E helps reduce dependency on energy imports. W2E helps reduce CO2 emissions, as a significant proportion of the energy content of wastes comprises “biomass” which is carbon neutral
• W2E helps meet India renewable energy targets and W2E technologies are amongst the cheapest sources of renewable energy
• W2E provides ‘baseload’ power (i.e. it generates electricity steadily and some technologies can vary their output in response to demand). This complements intermittent forms of renewable electricity generation such as wind, wave, tidal and solar power.
  “For waste that cannot be prevented, reused or recycled, energy from waste
  technologies can provide a valuable resource through heat, electricity and
  transport fuels. Energy can be generated from waste through a variety of both
  established and emerging technologies such as combustion with combined heat and
  power, anaerobic digestion, gasification and pyrolysis.”