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Solar ROI Calculator

ROI Calculator for Solar Flora Network

Flora del Sol Network - Solar ROI Calculator

Solar ROI Calculator Flora del Sol Network

Estimate payback, IRR, NPV, and savings for your agrivoltaic or homestead solar project.
Project Type
Farm/Business
Homestead
Tip: USDA REAP can cover up to 50% for eligible ag producers; many awards land in the 25–40% range.
System Size (kW DC)
kW
Please enter a size between 1 and 200 kW.
Installed Cost
$ / W
$33,000
Enter a realistic cost between $1.50 and $6.00 per W.
Sun Zone (Specific Yield)
Electricity Rate
$ / kWh
Enter a valid rate between $0.05 and $0.50/kWh.
Rate Escalation
% / yr
Net Metering Policy
Self-consumed energy offsets retail; exports are credited per policy below.
Self-Consumption
60% used on-site
REC Value (if applicable)
$ / kWh
O&M Budget
$ / kW·yr
Degradation
% / yr
Inverter Replacement
$ / W
year
String inverters often replaced ~12–15 years. Microinverters may last longer with higher upfront cost.
Federal ITC
Apply 30% ITC
Simplified: ITC credited in year 1. Actual basis and interactions with grants may differ; consult a tax professional.
USDA REAP Grant
% of cost
Assumes grant received at project completion (Year 0 cash inflow).
State/Utility Rebate
$ / W
Set to $0.30–$1.00/W if your utility offers capacity-based rebates.
Analysis Horizon
25 years
Discount Rate
%
Uses industry-standard assumptions
Simple Payback
—
Break-even year: —
IRR
—
Internal Rate of Return
NPV @ 6%
—
Net Present Value
25-Yr Net Savings
—
After O&M, replacement, incentives
Net Upfront (Yr 0)
—
Gross – REAP – Rebates (ITC in Yr 1)
LCOE
—
Levelized Cost of Energy

Cumulative Cash Flow

Cumulative Net Cash Flow Year 1 ITC credit
Adjust self-consumption and net metering to reflect your tariff. Load shifting can improve ROI.

Cost & Savings Breakdown

Gross Installed Cost
—
USDA REAP Grant (Yr 0)
—
State/Utility Rebate (Yr 0)
—
Federal ITC (Yr 1)
—
Year 1 Production
—
Year 1 Bill Savings
—
O&M (Annual)
—
Inverter Replacement (Year)
—
Next step: compare installer quotes and available rebates in your county.
Estimates are for educational purposes and use industry-average assumptions: installed cost $2.4–$3.2/W (small ground mounts), PV degradation ~0.5%/yr, utility price escalation ~2–4%/yr. Incentives and tax treatment vary; confirm with your installer and tax advisor.
Flora del Sol Network • Solar calculators for small farms and homesteads
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