Wind power costs could drop 50%. Solar PV could provide up to 50% of global power. Damn.
Vox

Solar and wind energy have been underestimated by analysts and politicians again and again and again. They have gotten cheaper and scaled up faster than even the most optimistic forecasts of a decade ago, or even a few years ago.

And there’s good evidence we’re still underestimating them. In fact, two new reports — one on solar, one on wind — make the point vividly. They argue that the radical trends of the last decade are going to continue, which is all that needs to happen for the energy system to tip over from disruption into revolution.

Lots of charts and graphs in this article you need to see, so go read the article.

Bottom line: The costs of solar/wind continues to drop, as market penetration gets deeper