solar energy on campus

After listening to the talk about the possibility of solar energy on campus I am actually surprised that I don't think it is that great of an idea. I feel like it is going to be way too expensive to be worth it. And yes I know it would look good for the school to be using solar power but as they said it really wouldn't even supply the school with that much energy. I feel like it's also kind of wasteful to start using solar energy for only 15 years or so. It makes me wonder what happens to the panels once they are dead? Are they recycled or simply thrown into a dump to add to our growing landfill problem. It also makes me wonder that after the 15 years or so are up and the school decides to expand and therefore the land for the solar panels is not available, where will the energy come from then? Then again in 15 years there will hopefully a great increase in renewable resource technologies.