Chances at a top school for MS Mechanical Engineering conc Sustainable Engineering

[Neonubian]

Hello everyone, I am looking to apply for an MS Degree in Mechanical Engineering looking to concentrate on sustainable energy. I was wondering if you have an idea of schools that are good in sustainable energy at the grad level.

Also I am worried about my chances, 2.8 Overall GPA from Columbia (could have done better but played around) and 790 Q GRE. I have worked for a year with an oil company as a pipe design engineer.

By 2011 I ll have 2 years of work experience, I m hoping that works in my favor and makes up for my poor GPA.