It's expensive right now because demand is low. When everyone is buying solar, I'm sure the price will drop even further. This could still happen in parallel with any other clean energy investments as well.
There aren't that many clean energy options available to the end consumer right now, other than solar. You could have a wind turbine which could run day/night, but they're just not as cheap per watt, and has far fewer competitors on the market making that stuff.
There aren't that many clean energy options available to the end consumer right now, other than solar. You could have a wind turbine which could run day/night, but they're just not as cheap per watt, and has far fewer competitors on the market making that stuff.