Everyone seems to be concerned about what the school will do when it's not sunny. You need to read up on how grid-intertie systems work. Everyone builds solar systems this way now unless you live off grid in the middle of no where. The panels connect to an AC inverter which connects directly into the buildings power. If there's too much power it goes back into the grid and the meter runs backwards. If there's too little you pull from the grid. Most people consume energy in their homes at night and early morning when the sun is low / gone. They can generate all day long when they're at work and that power feeds into the grid powerful businesses in their local area, and then when they get home they can use up power from some fossil plant. You don't directly use your solar electricity most of the time, but you offset the need for additional fossil power plants.