What is the grey energy of a solar module?

Some people think that the electricity generated by a solar module pollutes because the energy consumed during its manufacture, transport and recycling is not offset by the electricity production that it generates.

That’s wrong, today the entire process, from manufacturing a solar module to its recycling is compensated by the energy that it will generate during 2 or 4 years. Compared with the actual 25 or 30 years of life of the solar modules, the required energy for manufacturing, transport and recycling is compensated more than 10 times.