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Emergency Backup Only

Days of Backup:

Adding 1 more battery will add days.

Dear Customer,
We have developed this Battery Estimator Tool to calculate, nearly spot on, what is needed in battery, solar, and generator fuel for your specific home. It bases this calculation on the devices and home appliances you add to your Home Items List. We suggest you enter ALL items that use power in your home as this tool will calculate both what you need for Emergency Backup Only (box on the left) and what you need to be completely off grid (box on the right). This tool also takes into account other alternative power sources you may already have, so be sure enter the proper information in the boxes concerning you solar if you have it. Fuel for generators is automatically calculated and given in the estimates .

Off Grid

Gallons of Fuel Needed or

# Solar Panels Needed

We need some basic information about your home

Household Residents:
Home Square Footage:
Residence Zip Code:
Power Company:
My power company isn't listed

Existing Solar

Size (kW)
Install Date:

*Note: Solar predictions will be less accurate without a date of install.

Select the Items You Use

    Battery System

    Battery Type
    Battery kWh: 5.12
    Qty Batteries
    What is your inverter Input limit (kW)
    What is your inverter Battery Output limit (kW)

    *Note: Your existing inverter will most likely not handle the Load or Battery Input needed for this design and may require replacement.

    Home Items