Solar Sizing Calculator

Set Qty = 0 for unused appliances. All fields are editable. Use + Add Appliance for items not in the list.

Appliance Qty Watts Hrs/Day Days/Wk Critical? Peak? Surgex Daily Wh Crit. Wh Peak W Surge W Mo. kWh
Totals 0 0 0 0 0.00

Load Summary

Total daily energy0.00 kWh/day

Critical backup energy0.00 kWh/day

Peak running load0.00 kW

Peak surge load0.00 kW

Monthly energy0.00 kWh

Equipment Recommendation

Hybrid

PV array size needed0.000 kW

Panels required0 panels

Battery bank needed0.000 kWh

51.2V battery modules0 units

Continuous inverter need0.000 kW

Recommended 48V inverter0 kW

Inverter units needed0

Min surge rating to verify0.00 kW

Suggested arrangement—

Enter appliance quantities to see your recommendation.

Systems

Hybrid Grid Interactive

Hybrid Grid-Interactive System is a solar power system that combines solar panels, battery storage, and the utility grid to give you reliable and flexible energy.

Here’s how it works in simple terms:

  • Daytime: Solar panels power your building and charge the battery. If sunlight isn’t enough, the grid helps supply power.
  • Nighttime: The battery powers your building. If the battery runs low, the grid automatically takes over.
  • Extra energy: Any unused solar energy can be sent back to the grid for credits (if enabled).
  • Backup capability: The system can run independently during outages or use the grid only as a backup.

Why it’s popular

  • Continuous power (even during outages)
  • Lower electricity bills
  • Smart monitoring from your phone
  • Flexible setup (grid-tied, backup, or fully independent)

Grid-Tie System

A Grid-Tie System is a solar power system that is directly connected to the utility grid without using batteries.

How it works

  • Daytime: Solar panels generate electricity to power your building.
  • Excess energy: Any extra power is sent back to the grid (often earning credits through net metering).
  • Low or no sunlight: Your building automatically uses electricity from the grid.

Key features

  • No battery storage (lower cost)
  • Fully dependent on the grid
  • Automatically switches between solar and grid power
  • Typically shuts off during outages for safety

Off-Grid System

An Off-Grid System is a solar power system that operates completely independent of the utility grid, using only solar energy and battery storage.

How it works

  • Daytime: Solar panels generate electricity to power your building and charge the batteries.
  • Nighttime: The system uses stored energy from the batteries to run your building.
  • Low sunlight: If solar production is low, the system relies on stored battery power (or a generator, if installed).

Key features

  • No connection to the utility grid
  • Requires battery storage
  • Can include a backup generator for reliability
  • Ideal for remote locations or areas with unreliable electricity