My name is Madeline Acri and I am the Energy Storage Manager at Soligent. My mission is to inform and empower homeowners, installers and the Soligent Team to be the most knowledgeable about residential solar plus storage systems.
In our last Soligent Standard Monthly Newsletter, I mentioned that with grid-tied solar when a grid outage occurs, solar is disconnected in order to protect personnel repairing the grid. In order to allow solar to continuously provide power to a house, adding a storage system can help! Let’s discuss the “why” and the “how” of residential storage. There are a number of reasons “why” adding storage to a solar system is advantageous: these reasons could be for back-up and resiliency needs or grid-based service needs. Some grid-service needs include limited net metering access and protection against incremental rate hikes.
Regarding “how” to add storage, I want to highlight 3 essential steps that ensure proper storage sizing. The first is to identify the critical loads needing battery support. Often, we do not think twice when running multiple household appliances simultaneously. But if the power goes out, it is better to err on the conservative side when running multiple loads off of your batteries. The second is to select a hybrid, battery-based inverter. The load calculation determines the kW power size of the inverter but there may be a few brand options to evaluate within the same size category.
Lastly, identify the load run time to size the battery bank. The longer duration the loads are to run, the larger the usable energy capacity of the bank. These “whys” and “hows” of storage will be addressed in more detail during our next webinar.