Solar System Calculator

1. Your Load

Location

Appliances

Appliance

Watts

Qty

Hrs/Day

kWh/day

Peak Watts

Avg Load (W)

2. System Specs

System Voltage

Any voltage system available — single-phase standard, 2-phase for commercial

Days of Autonomy

Battery Type

Max Depth of Discharge

Panel Wattage Each

System Efficiency

3. Wire Runs

Battery → Inverter (ft)

Array → Controller (ft)

Controller → Battery (ft)

Inverter → Panel (ft)

Max Voltage Drop %

Copper Temp (°C)

3. Results

Solar Array

Daily Energy Needed —

Array Size —

Panels Required —

Actual Output / Day —

Battery Bank

Storage Needed —

Usable Capacity —

Battery Configuration —

Max Discharge Rate —

Recommended Components

Battery —

Configuration —

Components —

Charge Controller

MPPT Current (A) —

Max Array Voltage —

Inverter

Min Inverter Size —

Surge Capacity —

Wiring

DC Battery Wire (A) —

DC Array Wire (A) —

Inverter AC Wire (A) —

Cost Estimate (Rough)

Budget Tier —

Mid Tier —

Premium Tier —

Seasonal Production