Free Financial Modeler

Renewable Energy ROI Modeler

Model the full commercial renewable energy stack. Solar PV, battery storage, and EV charging — with ITC stacking, 25-year NPV, IRR, and state incentives.

Solar PV Battery Storage EV Charging Combined Stack

☀️ Solar PV Inputs

Adjust your building and financial parameters

☀️ Solar ROI Summary

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System Size
—
kilowatts (kW)
Simple Payback
—
years
25-Yr Net Savings
—
cumulative
Investment Summary
Annual Generation—
Grid Coverage—
Gross Install Cost—
Federal ITC (30%)—
MACRS Dep. Value—
Net Cost After Incentives—
Year 1 Savings—
25-Yr NPV—
IRR—
25-Year Cumulative Net Cash Flow

🔋 Battery Storage Inputs

Model demand charge reduction and TOU arbitrage

🔋 Battery Storage Summary

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Optimal Battery
—
kWh installed
Payback
—
years
Annual Savings
—
demand + TOU
Cost & Savings Breakdown
Est. Peak Demand—
Gross Battery Cost—
ITC Savings (30%)—
Net Cost After ITC—
Demand Charge Savings—
TOU Arbitrage Value—
Solar + Storage Bonus—
15-Yr NPV—

⚡ EV Charging Inputs

Size your commercial charging infrastructure

⚡ EV Charging Summary

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Chargers
—
recommended
Net Cost
—
after incentives
Annual Benefit
—
savings / revenue
Infrastructure & Incentives
L2 Chargers—
DCFC Chargers—
Gross Infrastructure Cost—
Federal ITC (30%)—
NEVI Program Funding—
Utility Rebates (est.)—
Total Incentives—
Payback Period—

🏗️ Combined Stack Inputs

Model solar + storage + EV together for maximum ROI

🏗️ Combined Stack Summary

Full Stack
☀️ Solar Only
—
annual savings
🔋 + Storage
—
annual savings
⚡ + EV
—
annual benefit
🏗️ Combined
—
total annual
Combined Project Summary
Gross Project Cost—
Total Incentives (ITC + NEVI + Rebates)—
Project Synergy Discount—
Net Project Cost—
Combined Payback Period—
25-Yr Cumulative Savings—
vs. Solar Alone—
25-Year Solar Cumulative Cash Flow (primary driver)

Available Incentives

🇺🇸 ITC 30% 📊 MACRS 5-yr ⚡ NEVI Up to 80% 🏭 Bonus Dep 60%

All estimates use industry benchmarks and averages. Actual results depend on site-specific conditions, utility rate structures, equipment selection, and project execution. This tool is for preliminary planning purposes only. Consult a qualified energy professional before making investment decisions.

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