Would that be such a bad thing?
If you add the current number of Americans without a job (9.75 million) to the number of US citizens not in the labor force (92.02), you come up with 101.77 million working age Americans who do not have work, according to data from the US Bureau of Labor Statistics as of 2014 and I’m guessing it hasn’t gotten any better.
That would be 20 million jobs that would be filled with Americans. That would mean 20 million less welfare, food stamp, Medicaid recipients.
If it forced companies to pay a wage that is more than you can get from welfare, then so be it. They along with us are paying for these people anyway, might as well give those people an opportunity to earn it.
Continuing to subsidize a 100 million people will bankrupt the country eventually. No matter how you cut it we need more Peter’s and less Paul’s if the country is to survive.
You need to look no farther than Greece.
We don't subsidize anywhere close to 100 million people without jobs. Their families do. And in the case of retirees with social security, medicare or pension but I'm guessing you don't think we should remove these and make people work until they are 90 in the tomato picking fields or cleaning toilets.
Going forward though, population control is going to be more important than ever or we will have the type of unemployment issue you speak of. We need to secure the border and just have legal immigration. Immigration is important for economic growth but we have to be careful. We need jobs for our natives and automation is going to minimize need for human labor in a lot of fields. It will create some new fields that we haven't even thought of yet, but I don't really know what all of those are and I'm not sure it will be a a neutral exchange.
We need to be bringing scientists and engineers here, not large swaths tomato pickers or fast food workers. So if we don't secure the border we'll have people coming here with little to do and that is a bad recipe. Once and for all we gotta deal with it. One good thing is the Chamber of Commerce is a huge backer of immigration because it gives them cheap labor but cheap labor is becoming less valuable so hopefully that will create less special interests destroying the political will to do something.
That's the long response.
Short answer: Who is then going to install your solar on the cheap?