One of the most important aspects of designing a solar array is sizing module strings to operate within the parameters of the selected inverter. Renewable Energy Associates has developed a tool to help in that process. Most inverter manufacturers offer some type of sizing tool, whether it’s simple or advanced, it’s usually limited to selecting only their products. The REA System Sizing Tool lets you select from a wide variety of products and manufacturer’s.
Our tool is free and available for download just fill out the quick questionnaire below. We respect your privacy and take protecting it seriously. The information gathered from this questionnaire is being used to research ways we could potentially expand this service. Thank you.
1. The string sizer is not setup for inverters with multiple MPPT’s. There might be a couple inverters included in our tool that have this feature (Power-One) but our results will vary from what the manufacturer will recommend.
2. We will no longer be taking request for additional micro-inverters to be added to the tool as the tool is a string size calculator and there are no strings with micro inverters. If you wish to have a micro inverter added so that you can calculate voltage drop we would suggest following the manufacturer recommended install procedure typically found in the install manual or on the manufacturers website.
3. Request for additional equipment will require a spec sheet of the product you are requesting.
Have a question about the string sizing tool or a suggestion which might make it better? Feel free to leave a comment below. Updates will be made periodically.