Solar PV System Designer

Solar PV Designer

Calculator for Installers & Homeowners

Target: 0 Wh/day

PV: 0 Wp

Bat: 0 Ah

Select Calculator: 1. Load & PV Power Sizing 2. Panel Array Config 3. Battery Bank Sizing 4. Charge Controller 5. Wiring Suggestions 6. Saved History

System Energy Requirements

Daily Energy Consumption Total energy needed per day (e.g. 5 lights * 10W * 5hrs = 250Wh)

Wh kWh

Peak Sun Hours (PSH) Usable hours of full sun (Avg: 4-5 hours)

System Efficiency Loss (%) Dirt, cable loss, heat (Default 20-25%)

PV Array Configuration

Required Array Power (Wp) From Step 1 calculation

Select Panel Size 100 Watt (12V) 160 Watt (12V) 250 Watt (24V) 330 Watt (24V) 450 Watt (24V/48V) Custom Spec...

Custom Panel Wattage (W)

Battery Bank Sizing

Daily Energy Load (Wh)

System Voltage 12V 24V 48V

Days Autonomy

Battery Type & Depth of Discharge (DoD) Lead Acid / Gel (50% DoD) Tubular Deep Cycle (70% DoD) Lithium Ion / LiFePO4 (80% DoD)

Inverter Efficiency (%)

Controller Sizing (MPPT/PWM)

Total PV Array Wattage (Wp)

System Voltage (Battery Bank) 12V 24V 48V

Safety Margin (%) NEC recommends +25% for continuous load

Cable Sizing Guide

Note: These are approximations for copper wire based on standard ampacity tables. Always consult local electrical codes.

Circuit Current (Amps)

Wire Run Length (Meters) One way distance

Installation Type General / Open Air In Conduit / Underground (Derated) Motor / Pump (High Surge)

Saved Calculations

Time	Type	Details
No history found.