Austin July 2015 - $57.10 per MWh. See [2]
Nevada July 2015 - $38.7 per MWh. See [3]
Mexico April 2016 - $35.44 per MWh. See [4]
[1] http://cleantechnica.com/2014/11/29/dubai-shatters-solar-tar...
[2] http://cleantechnica.com/2015/07/02/worlds-cheapest-solar-po...
[3] http://www.pv-magazine.com/news/details/beitrag/buffett-stri...
[4] http://www.greentechmedia.com/articles/read/Solar-Stuns-in-M...