Alain, Is not wrong in investing in solar PV. He is also correct in CIG Technology. He needs help in knowing about SIG instead of copper (too many shortages and low conectivity) SIG uses the same as CIG Technlogy except the base substrate is silver instead of copper. A much better way to produce more energy over time. And Siver cost less than Copper. Imagine that. Thin film has no history and silicon is way too expensive.