http://www.mtu.edu/gradschool/programs/degrees/environmental-energy/
http://www.colorado.edu/engineering/profile/mechanical-engineering-phd-focuses-renewable-energy-research-solutions-global-warming
http://www.findaphd.com/search/phd.aspx?PID=1011
http://www.hotcoursesabroad.com/study/training-degrees/us-usa/phd/energy-engineering-courses/loc/211/slevel/15/cgory/xk.1-4/sin/ct/programs.html
http://www.ntnu.edu/studies/phenpro/admission
