• Have your 12-digit Consumers Energy electric and/or natural gas account numbers (optional).
• Have a digital copy* of your sales receipt or invoice showing proof of payment, equipment type, and date of purchase.
• Have a digital copy* of your ENERGY STAR® or NFRC certification showing U-factor for window and patio door rebates.

*Don’t have a digital copy? We also accept pictures of documents taken with your phone!