The leading contention of the article is flawed as you are observing. It gets worse. How about energy produced or converted per person hour? Using this as a challenge, it isn't even close. So, on one hand, a crew of four people installs a $20,000 solar array 5KW when the sun is in the best position and an average of maybe 2KW over an eight hour sun day. Also, the batteries haven't caught up yet; so, the owner is still stuck on the power grid. So, let's look at the competition. Another home owner elects to install a natural gas 15KW generator, automatic changeover switch, and heat recovery accessories for about$3500. Now, gas that would have been used at 80% efficiency just to provide heat is now producing electricity, heat, and possibly hot water. Unlike the solar installation, this rig works on demand 24/7 any season of the year an is unaffected by the weather. Finally, no quibbling with the power company about buying and selling power over the grid. Why are so many more people employed by "solar"? We are still in the leading toe of the Sigmund curve for this industry. All those roof top installations represent infrastructure being built. Think of Hoover or Grand Coulee Dam for an example of how this works. For five years or so, these projects employed thousands of people doing a lot of hard work. The current maintenance force is less than one tenth of that. Sooner or later, solar will be "built out" and the labor force will shrink accordingly.