State tax credits exist in addition to federal tax credits to encourage clean energy usage and make it as affordable as possible. These may vary based on whether the system is for a residential or commercial entity. The US Department of Energy has a collection of the credits and are a great resource for optimizing your rebate.
The links below, taken from Energy.gov, are for residential installations, separated by state or territory.
We cannot provide legal advice to our customers. If you have any questions or concerns specific to your installation, seek the counsel of your tax preparer or other trusted adviser.