BAM™: Backup And Maintain
Prepare your home and family for the effects of a power outage with the Generac PWRcell battery backup, together with the BAM™ Package. The Generac PWRcell battery backup combined with the BAM Package is a one-two punch that expands your solar panel’s reach with enough power to serve as a managed backup for your home in the event of a grid failure.6 The BAM™ Package includes the following:
- 3 Additional 3.0 kWh Battery Modules
- Automatic Transfer Switches (ATS)
- Up To 2 Smart Management Modules (SMMs)
- Sure-Start HVAC Soft Start (If applicable)
What It Is
A managed-home backup power source designed to help protect your home and family from the negative impacts of a power outage. No more limiting which parts of your home can stay powered during an outage. Instead, with the Generac PWRcell and BAM™ Package, you have more backup power and greater control to manage the backup power flowing throughout your home during a power outage.
Why It’s Different
The Generac PWRcell together with the BAM™ Package can run entirely on solar energy. In the case of multi-day outages, the sun can recharge your battery backup daily and keep your home powered when you need it most.6
How It Works
When an outage is detected, the automatic transfer switch (ATS) allows power to continue flowing from your solar panels and battery.
Essential loads such as lights and your refrigerator continue to be powered.
The Smart Management Modules can either pause (and cycle on/off) lower priority loads, such as your air conditioning and water heater, when high-priority loads need power or lock out high energy-consuming 240v loads that you don’t want draining energy during a grid failure.
This helps to efficiently and effectively manage the backup power available to you during grid failure.
- Instant Load Transfer– Within 15 milliseconds of a power disruption, your battery backup will kick on and take over as your power source.
- Larger Energy Capacity– With an 18kWh capacity, your home can rely on a battery backup that handles larger loads and does more to provide you with power.
- Choose Your Essentials– You decide which appliances are your priorities rather than a pre-determined system. Run your backup energy supply as YOU see fit.
- Maintain Your Lifestyle– Enjoy a reliable supply of energy separate from the grid with limited disruption to your life that can keep your home running.6
- Smart Management Modules– Your system automatically identifies which appliances need energy and applies your personal logic to determine which parts of your home stay powered during an outage.
- Recharge During Outages– Recharge your batteries and maintain your electricity source during longer outages with the power of solar energy.6
Frequently Asked Questions
It depends on various factors, including your energy consumption, system size, state of battery charge, and home size. Generally speaking, assuming a fully charged battery at the time of grid failure, it should last a customer using 1,000 kWh a month up to about 12 hours. Remember, depending on the weather conditions, your solar panels should continue producing electricity during daylight hours, providing additional energy for your home during extended power outages and the ability to store any excess unused energy in the battery backup for later use.
The battery backup system with the BAM™ Package upgrade is capable of providing backup power to select AC units (with a soft starter). We do not recommend that the BAM™ Package be used with an AC unit greater than 4 tons. Unfortunately, not all AC units will be compatible with a soft starter.
The BAM™ Package is not recommended to be used with more than one (1) AC unit (except to lock out any additional AC units). If you have additional AC unit(s) or AC unit(s) greater than 4 tons, we recommend locking these loads (i.e., a locked Managed Load) and selecting as the prioritized Managed Load the 4 ton or less AC Unit that services a common area to provide comfort for the largest portion of your household and your family.
Great question! As certain power companies continue to charge more for grid energy during times of peak energy use, homeowners can help reduce the impact of these time-of-use rates by using the excess energy stored in their battery backup to help power their home.
The short answer is it depends. Every home and homeowner is different, so the answer will vary with your unique circumstances and may be impacted by multiple factors (within and outside your control), including the condition of the battery system, the battery system state of charge, ability to recharge the battery(ies) (based on weather conditions and other variables), consumption habits during a grid failure, the size of your home, the types of loads and appliances running during a grid failure, the managed, unmanaged and locked-out loads and other battery configurations. However, if you are normally a high energy user (i.e., you like to leave all of the lights on, fans running, etc.), then we would recommend that you make adjustments during a grid failure to help stretch the duration of your battery backup.
The ATS connects your battery backup to your home and is a self-acting, intelligent power switching device. Its primary purpose is to ensure the continuous delivery of electrical power from a power source to a connected load circuit (i.e., your main service panel). As a general rule, the ATS will connect to your primary power source (utility) by default and will only connect to the alternate power source (battery backup) when required (primary source failure) or requested to do so (operator command).
The SMMs are essential to the backup battery system (and load management). They work with your ATS, monitoring each selected circuit and automatically supplying power where it’s needed so you can get the most from your battery backup. Up to 2 SMMs are included with your BAM™ Package, and the backup battery system can use up to eight individual SMMs, depending on your needs, which can be purchased at an additional cost. Just as important, you can set the load priority for each — putting you in control of which circuits matter most!
The Soft Start is designed to automatically optimize starting current for AC motors and compressors without any user interface. This helps by significantly reducing start-up torque and start-up current reduction of your AC unit. Up to 1 Sure-Start HVAC Soft Start is included with your BAM™ Package.
A Managed Load is a 240v load that is “managed” by a Smart Management Module (SMM). The SMM allows you to either prioritize (including pause and cycle on/off) or lock out 240v loads in the event of a grid failure. Unmanaged loads are any non-240v load (i.e., 120v loads), such as general lighting, small appliances, or other appliances, or any 240v load that you elect not to manage through the use of a SMM.
240v loads are important to manage for a number of reasons, but most importantly, 240v loads not only consume more energy (thereby depleting the battery faster), but running too many 240v loads during a grid failure increase the risk that your electrical systems will trip, overload, short circuit, and/or fail during a grid failure.
The simple answer: To help efficiently manage the backup power available to you during a power outage, which is when you need it most. It also is critical to manage the loads during a grid failure in order to reduce the risk of an electrical system trip, overload, or other failure.