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.