Solar energy would be the cheapest to maintain but installation costs are high. Wind energy would be free when the wind blows, but again would cost a lot to install. There are many variables that go into what makes energy sources the pricing that they are.
hydropower
the cheapest alternative source of energy is biomass. because we can use it all and free and easy to find.
solar energy or a hamster wheel
solar energy or a hamster wheel
Because it is the cheapest source.
Coal Wind Oil
ATP.. hey it's free, depending on what you eat.
Hydroelectric power is the cheapest renewable energy source for large-scale production. That is, it has the lowest cost to construct and maintain the generating facilities compared to the amount of energy produced. Solar power is the cheapest renewable energy source for small-scale use, such as pocket calculators, LED lights, and remote (small) electrical appliances.
because it's the cheapest/most powerful energy source there is
The cheapest source of finance is retain.
It depends on where you are and how much wind, sun, etc. you get.
It is renewable energy source (i.e. non exhaustible). It is clean energy source (i.e. not polluting environment). However, its use has limitations of availability of sites with efficient wind speeds and not heavily populated.
The kWh produced by nuclear energy is the cheapest. It is a clean energy that does not pollute the environment. It gives chance for people to work during its construction and operation. It is reliable source of energy.