The correct answer is: All of the above.
Rooftop solar systems are being encouraged in Bihar to promote decentralized power generation, reduce dependence on fossil fuels, and utilize unused roof space.
Decentralized power generation refers to the production of electricity at or near the point of consumption. This can be done through a variety of methods, including rooftop solar systems. Rooftop solar systems can help to reduce the reliance on centralized power plants, which can be more vulnerable to outages.
Fossil fuels are non-renewable energy sources that contribute to climate change. Rooftop solar systems can help to reduce dependence on fossil fuels by providing a clean and renewable source of energy.
Unused roof space can be used to generate electricity through rooftop solar systems. This can help to reduce energy costs and improve energy efficiency.
In addition to the benefits listed above, rooftop solar systems can also help to create jobs, improve air quality, and reduce noise pollution.