☀️ Solar PV ROI Calculator • Grid-Tie vs Hybrid
Calculate Solar Savings, Payback Period, and ROI in One Professional Tool
Enter your electricity bill, target solar capacity, utility rate, and project assumptions once. This calculator will generate two results: a Grid-Tie system estimate and a Hybrid solar system estimate with battery backup consideration.
1 InputSingle calculation form
2 ResultsGrid-Tie and Hybrid
25 YearsLong-term savings projection
₱ ROIPhilippine peso ready
ROI Results
Sample Residential Project
📊
Estimated Monthly kWh
960 kWh
Annual Solar Production
12,812 kWh
Current Annual Bill
₱144,000
Grid-Tie
No Battery
Simple Payback Period
5.8 yrs
Estimated CAPEX₱550,000
Monthly Savings₱8,400
Year 1 Net Savings₱95,300
Total Net Savings₱3,553,025
ROI646%
NPV₱1,278,804
Hybrid
With Battery
Simple Payback Period
9.1 yrs
Estimated CAPEX₱1,000,000
Monthly Savings₱10,200
Year 1 Net Savings₱112,400
Total Net Savings₱4,197,215
ROI420%
NPV₱1,023,114
Comparison Summary
Grid-Tie Total Net Savings₱3,553,025
Hybrid Total Net Savings₱4,197,215
| Year |
Grid-Tie Net Cashflow |
Grid-Tie Cumulative |
Hybrid Net Cashflow |
Hybrid Cumulative |
ROI Visualization (Cashflow & Cumulative)
Best for Fast ROI
Grid-Tie usually gives faster payback because it has lower upfront cost.
Best for Backup
Hybrid solar adds battery storage, making it better for backup power and higher self-consumption.
Engineering Note
Final design should verify roof area, load profile, utility rules, protection devices, grounding, and inverter compatibility.
Disclaimer: This calculator is for preliminary feasibility and ROI estimation only. Actual savings, payback period, system cost, and generation may vary depending on site condition, shading, roof orientation, equipment brand, utility interconnection, net metering rules, battery depth of discharge, and final engineering design.