Besides large hydropower projects, Sikkim promotes:

Micro-hydro projects for rural areas
Solar rooftop installations
Biogas plants
All of the above

The correct answer is: d) All of the above.

Sikkim is a small state in the Himalayas with a population of just over 700,000 people. The state has a long history of hydropower development, and currently has a number of large hydropower projects in operation. However, the state government is also keen to promote renewable energy sources, and has been encouraging the development of micro-hydro projects, solar rooftop installations, and biogas plants.

Micro-hydro projects are small-scale hydropower projects that are typically used to provide electricity to rural communities. They are often located in remote areas where there is no access to the grid, and can provide a reliable source of power for schools, hospitals, and other essential services.

Solar rooftop installations are another type of renewable energy source that is being promoted by the Sikkim government. Solar panels can be installed on the roofs of homes and businesses, and can provide a significant amount of electricity. Solar power is a clean and sustainable source of energy, and can help to reduce Sikkim’s reliance on fossil fuels.

Biogas plants are a type of renewable energy source that can be used to generate electricity and heat. Biogas is produced by the decomposition of organic matter, such as manure, sewage, and food waste. Biogas plants can be installed on farms, in schools, and in other large buildings.

The Sikkim government is committed to promoting renewable energy sources, and believes that they can play a major role in the state’s energy future. The development of micro-hydro projects, solar rooftop installations, and biogas plants will help to reduce Sikkim’s reliance on fossil fuels, and will also help to improve air quality and reduce greenhouse gas emissions.