COMMERCIAL FINANCIAL MODELING TOOL

Commercial Solar ROI & Payback Calculator

Calculate 30% Federal ITC tax credits, MACRS 5-year accelerated depreciation, electricity offset savings, and simple payback period for commercial solar projects.

🏢 Project Financial Inputs

System Size (kW DC)

Turnkey Cost ($/Watt)

Current Electric Rate ($/kWh)

Annual Utility Escalation Rate (%)

Federal Tax Credit (ITC %)

Corporate Income Tax Rate (%)

Specific Yield (kWh/kWp/year)

📈 Financial Return Metrics

Gross Turnkey Project Cost —

Federal ITC Tax Credit (Direct Credit) —

MACRS 5-Yr Depreciation Tax Shield —

Net Effective Upfront Cost —

Year 1 Electricity Bill Savings —

Simple Payback Period —

25-Year Cumulative Net Savings —

Levelized Cost of Energy (LCOE) —

Cumulative 10-Year Cash Flow Projection

Year	Solar Generation (kWh)	Utility Rate ($/kWh)	Annual Savings ($)	Cumulative Net Cash Flow ($)

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