The SBE at Heriot-Watt here is apparently pretty good (although the building is shockingly crap ironically), although I'd go for Mechanical Engineering with Energy or electrical if you want to do energy engineering (depends which bit you want to do, mechanical is making the generator spin, electrical is taking the energy from the generator to the end user). I'll tell you one thing though, find a uni with a good high voltage and machines lab. You really need to work in HV labs to understand how electricity is generated and how it is transmitted. Also arcing nearly 250kV over an insulator stack is fun. Flashover looks cool.