Consider that the name of the site is Solarplaza. That said: "But the payback time for the energy used to produce a solar panel is only one to two years. This

Consider that the name of the site is Solarplaza. That said: "But the payback time for the energy used to produce a solar panel is only one to two years. This means that in this time the panel generates the total amount of energy that has been used in its entire production. ... Other sources of energy have much longer payback times. Specifically, nuclear power plants have extremely long payback times - so long in fact that it is questionable whether all the power that generated during their lifetime is enough to pay for the energy used to build and disassemble them."