Solar PV Calculator

Plan your home solar project with ease! Simply input details about your lights, appliances, and AC units, and our Solar PV System Designer will provide an estimated size for your solar panels, battery bank, inverter, and a sample Bill of Quantities to get you started.

Solar PV System Estimator

Fill in your appliance details and system preferences to get an estimated PV system size and Bill of Quantities.

1. Lighting Load

Number of Lights:

Average Wattage per Light (W):

Average Daily Usage (hours):

2. Refrigeration Load

Number of Fridges/Freezers:

Average Wattage per Fridge (W):

Fridge On-time Percentage (e.g., 0.4 for 40%):

3. Air Conditioning Load

Number of AC Units:

Average Power per AC Unit (W): (e.g., 1HP ≈ 750W, 1.5HP ≈ 1100W, 2HP ≈ 1500W)

Average Daily AC Usage (hours):

4. Other General Loads

Average "Other" Loads Running Simultaneously (W): (For inverter sizing - e.g., TV, computers, fans running at the same time)

Total Daily Energy from All "Other" Loads (kWh): (For total energy calculation - e.g., washing machine, microwave, kettle usage over a day)

5. System Design Preferences

Desired Days of Autonomy (for battery backup):

Solar Panel Wattage per Unit (Wp):

System Voltage (V):

Battery Type / Depth of Discharge (DoD):

City/Town for PSH Estimation: Enter city, then click button. This is a rough estimate.

Peak Sun Hours (PSH) for your location: (Average daily hours of strong sunlight. Can be auto-filled using city above, or entered manually.)