Some people in Singapore have already adopted this alternative energy source as Singapore has the technology and the equipment to convert solar energy into electricity. However, it is dependent on the weather if there is no solar energy, no electricity will be converted.
It is deprived form dead organisms or trash such as used paper. Biomass can be converted into electricity. Using this technique, is environmental friendly and also can save space.
Like solar energy, it is dependent on the weather. If there is no wind, no energy would be converted. A windmill is used.