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Backup Power Packages

These systems provide emergency backup power for your household and are recharged either with your existing solar panels, the power grid, or a gas generator.

Backup Power Kits

ModelPart No.DescriptionPrice
Backup Power Central 4000, 240VAC1440827Wholesale Solar Backup Power Central 4000, 240VAC standalone backup system
$6,250.00
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Item is not returnable.
DC Coupled Backup Power System with 2kW Inverter1893445WSS DC Coupled Backup Power System with 2kW Inverter
$6,083.00
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DC Coupled Backup Power System with 4kW Inverter1893449WSS DC Coupled Backup Power System with 4kW Inverter
$7,953.00
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AC Coupled Backup Power System with 16kW Outback Inverter1894115WSS AC Coupled Battery Backup System with 16kW Outback Inverter
$29,035.00
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AC Coupled Backup Power System with 4kW Outback Inverter1894105WSS AC Coupled Battery Backup System with 4kW Outback Inverter
$10,413.00
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AC Coupled Backup Power System with 8kW Outback Inverter1894110WSS AC Coupled Battery Backup System with 8kW Outback Inverter
$17,339.00
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Backup Power Info

This page features stand-alone backup power packages (without solar included) that can be added to an existing PV system. If you are interested in solar + battery backup, browse our grid-tied system packages with energy storage included.

In a standard grid-tied system, the energy generated by your solar panels feeds into the grid to offset your energy costs.

However, this connection to the grid means you are still at the mercy of power outages. To keep the lights on during an outage, you need on-site energy storage to take over the power supply when the grid goes down.

Add Batteries to Your Existing Grid-Tied System

Most grid-tie inverters are not designed to integrate with a battery bank. To retrofit your current system with energy storage, you’ll need to add new components to make your inverter work with batteries.

The systems on this page are designed to retrofit an existing grid-tie solar system with energy storage via AC coupling or DC coupling.

AC coupled systems are designed to work with nearly any grid-tied inverter. DC coupled systems are only compatible with string inverters. Please see the description on each package for detailed sizing information and contact us if you need help with your project.

Add a Generator for Backup Power

Generator Packages

ModelPart No.DescriptionPrice
14kW Kohler Partial Home Backup Generator Package1894050WSS 14kW Partial Home Backup Kohler Generator Package
$4,736.40
Qty
20kW Kohler Full-Home Backup Generator Package1894100WSS 20kW Full Home Backup Kohler Generator Package
$5,580.80
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Gas generators are a cost-effective backup power solution. If you simply need an affordable way to keep the lights on during an outage, a generator may be your best bet.

There are several advantages to using generators for backup power:

  • Generators have the lowest up-front cost
  • Generators are typically sized to back up your whole house (batteries are usually sized to only power essential appliances since they cost a lot more)

Generators have some key drawbacks compared to battery backup systems:

  • Need to be re-fueled
  • Does not provide uninterrupted backup - generators take a few minutes to switch on and power up
  • Noisy while operating
  • Maintenance

We have noticed a surge of interest in backup power from Californians who are concerned about mandatory blackouts imposed by PG&E. Those scheduled blackouts have left Californians searching for a way to supply uninterrupted power to their homes during outages.

For many of these customers, we are recommending generators as the preferred solution. A generator will provide more backup power at a lower cost and the concerns about refueling are limited if the generator is fueled by an on-site propane tank. It’s a relatively low-cost way to provide robust backup power for most or all of your household.