Anyone know what would be a suitable method to apply for a novel project (Energy Recovery for Municipal / Commercial Buildings) in sustainable energy? The problem I have is that the proposal I want to do has 0 (zero) research in that area, I can't find anything resembling what I want to do, it is so niche that it covers 3 different areas of Engineering (Mechanical, Electrical and Sustainable). The question is who do I aim it at?
the Prof/Doc with Energy background or Electrical background?

My background: Looking to find a PhD in Energy/Sustainable, Msc Mechtronics (Merit) BEng (2:2).

Yes I want to apply to a Oxford for fun.