Wood Mackenzie.  www.woodmac.com  WM is a global research and consultancy business.  Partners with organizations and governments to inspire better decision making.  It has dedicated oil, gas & LNG, power and renewables, chemical, and metals and mining sector teams located around the world.  See WM reports on power and renewables: www.woodmac.com/store/industry-sector/power-and-renewables/  They charge for these reports.