Chapter 12
Sizing a Battery-Based System
IN THIS CHAPTER
Performing a load analysis
Determining the battery bank’s capacity
Calculating required power output for a PV array and a charge controller
Making sure the inverter fits
Adding a generator to the system
In addition to grid-direct PV systems, which I show you how to size in Chapter 11, the other major PV system type you’ll likely have the opportunity to design and install is a battery-based system. You can install one of these systems on the grid (utility-interactive) or off the grid (stand-alone). The basics of the design and installation process for both are similar, including the fact that sizing any battery-based system is equal parts art and science.
The science comes into play when you analyze specific site information and calculate the power values of the battery bank and the array. The art part is apparent when you work with clients to define realistic load profiles so you can size the entire system (people generally ...
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