Hi there! I do 2nd year elec eng at unsw, but know a few people doing pv.
from what i understand, the industry is not huge at the moment, but there is obviously going to be good growth over the next 5-10 years.
the photovoltaics degree is well structured at unsw, because you get to choose a strand such as electrical engineering, or maths/physics to focus on as well. This is good since there are not many jobs specifically for pv engineers, so having a well rounded degree will mean you will be qualified for many other positions as well.
read about the unsw pv degree here
http://www.pv.unsw.edu.au/future-students/undergraduate/photovoltaics.asp
unsw is the place to do engineering, and even though the elec eng building itself is a bit run down, the labs are all pretty well equipped and i believe there are a lot of other good facilities which many unis don't have.
good luck for the rest of year 11 and try not to stress too much over the hsc
