There are different types of energy that are considered "alternative". The details depend on the type of energy.
fossil energy alternative energy nuclear power
Alternative
A motor is used to power a windmill.
Because it's one of the fossil fuels (coal, oil and natural gas) which release carbon dioxide, a greenhouse gas.
heat water air
Currently, the most efficient alternative energy source at around 95% in the case of large hydropower dams, and 90% for smaller ones, tied with tidal power (not widely used).
Simple Answer to Your Question is "YES". Biomass is an alternative energy type. Basically biomass means we produce energy from materials like wood, grains or something similar. All these absorbs energy from sun and then stores some parts of them within them. Once you use them, they will grow again.
They harness wind energy and convert this to mechanical energy to grid flower or pump water or to drive a generator to make electricity.
Wind isn't considered a type of fuel at all. Wind is a renewable energy source though.
Thermal, nuclear and hydrolic?
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