Is a solar cell net energy positive?

Question

Is the energy generated by a solar cell over the life of the cell greater than the total energy used to create the cell. Taking into account material refining, manufacturing, instalation etc.

Answer 1

Yes.

The most recent statistics I've heard (at the annual conference of the American Solar Energy Society) are that a solar panel takes about 3 years to offset the energy used in its manufacture.  The life of a solar panel is rated at 25 years, so even if the 3 year number is off by 100% or more, the panel is still a net energy "win."

Good question.

Answer 2

well of course- a solar cell life is about 40 years!

Answer 3

yes definately.

The challenge today is to lower the cost of solar energy so it is the same as coal, natural gas, or hydro.  This will be done in 2-3 years.