How commercial property owners can use MACRS depreciation and the ITC to wipe out 60%+ of solar installation costs (The actual math)

Hey everyone, I’m a software engineer working on an independent data tool to automate commercial solar underwriting because I got tired of how opaque solar sales consultations are.

For any business owner looking at rising utility demand charges this quarter, here is the exact financial stack you should be using to evaluate your property's ROI:

>The Federal ITC: This is a dollar-for-dollar tax credit covering 30% of your total system installation cost right off the bat.

MACRS Depreciation: Under current tax codes, you can deduct the depreciable basis of the solar asset (usually 85% of total cost) using a 5-year recovery period. If you're in a high tax bracket, this write-off drastically shortens your payback period.

>The Hidden Killer (Demand Charges): Most owners just look at their total kWh usage, but utilities kill commercial properties on "Peak Demand" fees (the highest 15-minute spike in the month). A properly sized solar + storage asset targets this specific metric to cut your bill by thousands, independent of actual energy generation.

I’m currently finalizing an automated tool to pull localized tariff data and map this out instantly for any zone without dealing with pushy consultants.

I’d love to know from any property owners or managers here: What part of your utility bill or solar financing is the biggest headache to calculate manually? I want to make sure my model accounts for it before launch. (If you want to test the early beta tool, I dropped a quick waitlist form in my profile bio).