Residential Solar Calculator with Internal Rate of Return
Enter your Power company
SCE Zone 10
SCE Zone 13
SCE Zone 14
SCE Zone 15
SCE Zone 16
SCE Zone 17
SDGE Coastal
SDGE Inland
SDGE Mountain
SDGE Desert
Enter your Monthly kWh Usage
Rebate Level
Your Average Power Bill
System Size 3 Options
Option 1
Option 2
Option 3
System Size
Small
Medium
Large
% of Total Power Bill
40%
60%
100%
System Size in kW (STC Watts)
Projected Solar system kWh/month
Solar system price
Less Federal Tax Credit of 30%
Less State Rebate
Total System Price after Federal and State Incentives
Current Power Bill
New Power Bill with Solar
Solar Investment--High Yielding and Safe--Your 25 Year Internal Rate of Return
25 Year IRR
Or--Finance your System with a Home Equity Loan
Cost of Money (Home equity loan)
Number of years financed
Your Monthly Loan Payment
Your State and Federal Tax Bracket
Your State and Federal Tax Savings
Your Monthly Solar System Cost after tax
Savings (Short term and Long term)
Rate of Energy Cost Inflation
Your Savings per Month (1st year)
Your 30 Year Savings
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