 For more on the long-term prospects of success of companies in these crowded yet critical industries, we were joined by Rob Barnett, senior energy and commodities analyst at Bloomberg Intelligence, and Jenny Chase, lead solar analyst for Bloomberg NEF. What's happened over the last 20 years, which is roughly my career in this industry, is solar panels have got super cheap. I mean, when I started, you'd pay $6 a watt, a watt being a standard measure of a solar panel. And today, in the U.S., you pay about 30 cents per watt.