Japan has set a target to increase it’s number of solar powered houses to 14 million by 2030. It’s a fairly lofty goal. The exceptionally noteworthy part of this is that Japan is focusing on reducing the costs of panels, increasing the power output, and increasing the ease of installation. Since Japan produces roughly half the solar panels in the world, hopefully some of these improvements will find their way to other shores. I know I looked at solar panels for my house a couple of years ago when I was building. It just wasn’t cost effective for our area at the time. Hopefully with the rising price of electricity, these potential improvements will be a big boon!