Advanced Solar Calculator
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1 • System & Load
System Mode
Grid-tied
Hybrid (grid + battery)
Off-Grid
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Daily consumption (kWh)
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Peak sun hours (hrs)
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Peak instantaneous load (kW) — optional
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DC/AC ratio (array ÷ inverter)
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Inverter efficiency (%)
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2 • Panels, Roof & Battery
Panel watt (W)
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Panel efficiency (%)
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Panel degradation (%/yr)
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System derate (%)
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Available roof area
m²
ft²
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Tilt angle (°)
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Orientation
South
East
West
Flat
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Battery & autonomy
Shown for Hybrid/Off-grid
Autonomy (days)
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Depth of Discharge (%)
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System voltage (V)
12V
24V
48V
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Battery type
Lithium
Lead Acid
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3 • Financial & Advanced
Installed cost ($/kW)
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Electricity tariff ($/kWh)
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System lifetime (yrs)
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Incentives (%)
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Grid emission factor (kg CO₂/kWh)
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Panel area safety factor (%)
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Results
Net system cost
$—
Payback
— yrs
Lifetime generation
— kWh
Lifetime savings
$—
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