If I already installed a solar system on my home/business, can I still participate in OUC's Solar Programs?

Yes, for PV program. Depending on how old the system is, a solar contractor would need to bring the system up to code so that it can pass OUC's inspection. For solar thermal systems, applications must be submitted within 6 months of system installation. Visit the How to Apply for Your Home or How to Apply for Your Business section to learn more about the requirements.