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Commercial & Industrial (C&I) Energy Engineering

Commercial Solar, BESS Energy Storage & EV Fleet ROI Calculator

Model solar PV capacity, Battery Energy Storage (BESS) peak-demand charge shaving, and EV fleet charger impact. Calculate 30%โ€“40% IRA Section 48 ITC tax credits, MACRS depreciation, and 25-year financial returns.

Facility & Utility Profile
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Solar PV & BESS Sizing
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$
Maximum demand spike reduction discharged during utility 15-min peak window.
EV Fleet Chargers & Tax Incentives
Net Turnkey Capex
$442,800
After ITC & MACRS
Annual Net Savings
$97,420
Energy + Peak Shave
Simple Payback
4.5 Yrs
Break-Even Horizon
25-Yr Net Cash Flow
$2,145,000
Cumulative Profit

Capital Investment & Tax Incentive Breakdown

IRA Section 48 Schedule
Commercial Solar PV Turnkey Cost (400 kW-DC @ $1.65/W) $660,000
BESS Battery Energy Storage (300 kWh @ $480/kWh) $144,000
Commercial EV Fleet Infrastructure (7 Ports Installed) $55,000
Total Gross Turnkey System Capex $859,000
Federal ITC Tax Credit Benefit (40%) -$343,600
MACRS 5-Year Depreciation Tax Savings (21% Federal) -$121,500
Net Out-of-Pocket Commercial Investment $393,900

Annual Operational Utility Savings

12-Month Run-Rate
Solar PV Generation Offset
538,400 kWh/yr
Annual kWh Bill Savings: $70,780/yr
BESS Peak Demand Shaving
120 kW Shaved / mo
Annual Demand Fee Savings: $26,640/yr
Combined Monthly Utility Bill Reduction: $8,118 / month

25-Year Cumulative Financial Pro-Forma

Assuming 2.5% Annual Utility Escalation
Year Milestone Annual Savings Cumulative Cash Flow Net ROI %
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