Because the credit score decreases your tax Monthly bill, you won't automatically "receive" anything. But if you file your taxes, the credit will reduce your tax bill for that 12 months. This source Middle provides an in-depth interpretation of the IRA, and includes various informational webinars that designate the benefits https://sites.google.com/view/energy-grants-uk/4-steps-to-apply-for-government-grant-for-solar-panels