I keep putting off buying a solar system (and battery system) partially because I just don't want to build one for where I live right now, the other part is that the advances are still going fast enough that waiting 10 years you will get a system that is 2-4x better for the same cost as today. It's hard to justify the investment right now in my case. Also, I want a solar/backup system for my own reasons. I don't really care about the "muh climate" argument as I also want wind, if I have a stream, water and a gas generation system. I want to be able to run under my own power entirely for as long as I need to with backups on backups. Archive: https://archive.today/klTWp From the post: >>As the price of silicon panels has continued to come down, we've reached the point where they're a small and shrinking cost of building a solar farm. That means that it might be worth spending more to get a panel that converts more of the incoming sunlight to electricity, since it allows you to get more out of the price paid to get each panel installed. But silicon panels are already pushing up against physical limits on efficiency. Which means our best chance for a major boost in panel efficiency may be to combine silicon with an additional photovoltaic material.