Solar ROI & Output Calculator
Comprehensive financial analysis for solar investments. Includes loan amortization, 50+ city database, tax incentives, and cash flow visualization.
Location & System
Financials
About
Solar is an asset class. Like any investment, it requires detailed Cash Flow Analysis. This professional tool goes beyond simple multiplication. It calculates the Levelized Cost of Energy (LCOE), factors in loan interest (amortization), Federal/State Tax Credits (ITC), and utility rate inflation.
We use historical solar irradiance data for major global cities to predict yield. The model generates a year-by-year balance sheet, highlighting the "Break-Even Year" where cumulative savings surpass the net capital cost. It also visualizes the environmental dividend in tangible carbon metrics.
Formulas
We calculate the Net Present Value (NPV) and cumulative cash flow CFn for year n:
Loan payments are calculated using the standard amortization formula:
Reference Data
| City | Peak Sun Hours | Avg Elec Cost ($/kWh) | CO2 Intensity (lb/kWh) |
|---|---|---|---|
| Phoenix, AZ | 6.5 | 0.13 | 0.95 |
| Los Angeles, CA | 5.6 | 0.26 | 0.55 |
| New York, NY | 4.0 | 0.22 | 0.80 |
| Miami, FL | 5.3 | 0.14 | 0.92 |
| London, UK | 2.9 | 0.34 | 0.58 |
| Berlin, DE | 3.1 | 0.40 | 0.85 |
| Sydney, AU | 4.6 | 0.28 | 1.30 |
| Tokyo, JP | 3.8 | 0.26 | 1.10 |
| Dubai, UAE | 6.5 | 0.08 | 1.05 |
| Johannesburg, ZA | 5.8 | 0.15 | 2.00 |
| Toronto, CA | 3.4 | 0.12 | 0.10 |
| Madrid, ES | 5.1 | 0.30 | 0.60 |