IEP Model Project

The home for the IEP Model software standard.

Welcome to the IEP Model Website

NEW (September 22, 2014) -- Preview Release of IEP Model Version 2.0

As a result of the Department of Energy's SunShot Initiative project with SolarNexus, we are pleased to announce the preview release of the 2.0 version of the IEP Model. About IEP Model 2.0.


The IEP Model is a free, public XML data model for describing solar and energy efficiency projects. The IEP Model gives software vendors and companies implementing their own software solutions the ability to build their software to read and write standardized data, thereby lowering the risk and cost of integrating software.

The IEP Model was originally developed through a California Solar Initiative RD&D grant. In an effort to gain greater commercial adoption, the US Department of Energy's SunShot program has contributed funding to enhance the standard and demonstrate commercial viability.


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