Hydro power... Pro's sort of free and not much pollution. Con's, very limited where you can place them, also destroys natural water ways.
Geothermal is really the only option for clean free energy, we just have to get the oil industry out of the way.
If you’ve made your home as energy-efficient as possible and are looking for new opportunities to reduce your energy consumption, it may be a good time to go solar.
If you live on at least one acre of land with strong wind resources, wind turbines can be an incredibly efficient way to produce electricity for your home.
If you have a stream, creek or other source of flowing water on your property, you might consider installing a small hydropower system.
all these are non polluting and eco friendly free energy. Well solar energy is easily available in abundant but is not so dependable. On the otherhand wind and hydro power are available and are dependable, but needs large area for construction and are high in cost. i to strongly go with geothermal energy.
If you have a stream, creek or other source of flowing water on your property, you might consider installing a small hydropower system.
Mind power is more powerful than the above.
All these are important to save fuel. As they are being used without polluting our environment, they are good.
I think wind power would be more powerful.
Compare and contrast the following green energy sources providing two pros and two cons for each energy type: wind power, solar power, hydro power. What are two obstacles the US faces in converting to one of these alternative energy sources instead of fossil fuels as a main source of energy?