Free Tool

Megawatt String Sizing Tool 2.0

This is an updated version of the original Megawatt String Sizing Tool


This updated String Sizing tool includes a large re-work of the modules and inverters used in the existing database.


There are significant updates in verifying inverter specifications and the interaction of multiple MPPTs in the inverters and the string sizing calculations. We have also identified the top areas for additional improvement, including: expanding the inverter list to include inverters with three MPPTs and dc optimizers.

About the Author

Ext.jpg?ixlib=rb 1.1
Ryan Mayfield
President, Renewable Energy Associates

Ryan Mayfield has been working in the renewable energy field since 1999 and is the President of Renewable Energy Associates, a consulting firm providing design, support and educational services for electrical contractors, architectural and engineering firms, manufacturers and government agencies. Ryan serves as Photovoltaic Systems Technical Editor for SolarPro...[more]

Want More?

This tool is used in HeatSpring's Megawatt Design course.

Get Your Free Copy

Fill out the following information and we will email you a copy of this tool (or login instead):