Make sure to have your solar panels professionally installed. The installation of these panels needs to be very precise, and you do not want to mess it up. Having a professional installation also provides you with a warranty, and this gives you somewhere to turn if things are not working right.
This is the new solar convection heater from Solar Infra Systems.
Maximize the output of your solar panels by adjusting them seasonally. Adjusting your panels twice a year, once in the summer and once in the winter, will ensure that your panels are producing the maximum amount of energy by taking into account the earth's changing position relative to the sun.
A solar powered fan for your attic is a good choice if switching completely to solar power is not feasible. The fan will have a temperature sensitive gauge and switch itself on when necessary. This will remove heat and lower the cost of cooling. It's also solar powered, so you don't have to pay to power it.