Ssssh! You'll just confuse him with numbers and science!
Joking aside, I think PV has great potential in the sunnier parts of the world. Possibly not for energy intensive businesses like welding, but lighting (hugely important!), internet access, computing are easier to supply via PV. And even relatively (for a small business) projects can be financed via microfinance lenders - e.g. kiva.org. Go and check it out!