storage system owner's guide
12
With an Enphase storage system, when the grid is down,
you have power, and when the grid is up, you can save
money. Whole home backup and partial (essential) home
backup scenarios are shown in the following sections.
Your system is like one of these congurations depending
on whether your system is installed to provide full home
backup or installed to provide power for essential loads
you have identied in discussion with your installer.
Enphase storage
Backup options
Partial home backup
This is the preferred conguration for backup of essential
loads. When the grid goes down your main electrical
panel will power down, and Enphase storage system will
energize your back-up electrical panel. All the circuits
that run through your back-up electrical panel transition
to off-grid operation. Typical back-up loads panels are
congured to power essential loads during an outage.
Essential loads vary from home to home, but most often
include refrigerators and freezers, communications and
entertainment devices, lights, and electrical heat and/or
air conditioning. Your installer can conrm which electrical
circuits have been included in your back-up electrical panel.
Depending on the power requirements of your various
appliances, you may nd that a staggered start of heavy
electrical loads improves the performance of your system.
For example, you may wish to run your dishwasher when
you are not running your air conditioner. Your system
continues to operate autonomously for as long as the sun
is shining, or you have energy capacity in your Encharge
storage system. You can extend the period of autonomous
operation by limiting your energy usage during the period
of the grid outage.
Note: The scenarios below show an IQ Combiner (with IQ Envoy) and IQ
series micros. If you have legacy M series (M215 or M250) micros
your system will have an Envoy S metered. The Envoy S metered
may be inside a combiner box.