Solar Inverter Calculator — Calculate Solar System Performance

Solar Inverter Calculator

Calculate solar inverter performance, energy output, efficiency, and return on investment for residential and commercial solar systems.

Step 1: System Specifications

5.0
5.0

Energy Production Formula

Daily Energy (kWh) = Solar Capacity (kW) × Sunlight Hours × Efficiency
Annual Energy = Daily Energy × 365 days

Step 2: System Configuration

90%
$0.15

Typical System Sizes

Residential: 3-10 kW
Small Commercial: 10-50 kW
Large Commercial: 50-500 kW
Utility Scale: 500+ kW

Solar System Performance Results

Summary
System Comparison
Financial Analysis

Estimated Daily Energy Production

18.0 kWh
6,570 kWh/year • $985/year savings
Daily Energy
18.0 kWh
Annual Energy
6,570 kWh
System Efficiency
90%
Annual Savings
$985

Solar System Comparison

System Type Capacity Daily Output Annual Savings

Financial Analysis & ROI

Return on Investment Calculation

Payback Period = System Cost ÷ Annual Savings
ROI = (Annual Savings × System Lifetime) ÷ System Cost

Typical residential solar system: $15,000-$25,000
Typical commercial system: $50,000-$200,000+

Estimated System Cost
$15,000
Annual Savings
$985
Payback Period
15.2 years
20-Year ROI
131%

Incentives & Rebates

Common Solar Incentives

• Federal Tax Credit: 26-30% of system cost
• State Rebates: Varies by location
• Net Metering: Credit for excess energy
• SRECs: Solar Renewable Energy Certificates
• Property Tax Exemptions: In many states

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