As Feed-In Tariffs Wane, Auctions Are Enabling the Next Wave of Solar Cost Improvementsteslaswervin (51)in #technology • 10 years ago Global PPA prices were down an average of 9 percent in 2015. http://www.greentechmedia.com/articles/read/as-feed-in-tariffs-wane-auctions-are-causing-the-next-wave-of-solar-cost-im