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Modelkit—Flannel Edition: An Open-Source Tool for Modeling the Commercial Building Stock in the Pacific Northwest

MARCH 8, 2022 | 12:00 PM - 1:15 PM
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Join us for a Building Energy Simulation Forum (BESF) presentation on March 8 to learn about Modelkit—Flannel Edition. Learn how the Flannel tool uses the open-source Modelkit framework to automatically generate and run large sets of EnergyPlus simulations. Modelkit combines templates and scripting to create highly efficient and flexible workflows across commercial and residential prototypes, with numerous modeling inputs and built-in energy efficiency measures.

Building on Modelkit, Flannel implements an automation workflow that enables a variety of modeling studies across multiple building types, vintages and climate zones. Tailor-made for the Pacific Northwest, the tool features 18 building types based on the Pacific Northwest National Laboratory (PNNL) commercial prototype models and is calibrated with regional data from the Commercial Building Stock Assessment.

About the presenter:

Peter Ellis, President, Big Ladder Software   

Peter Ellis is president and founder of Big Ladder Software, a Denver-based company that provides services and software for building energy modelers. Peter has been involved in developing simulation tools for more than twenty years and has been a pioneer in the deployment of open-source software for energy modeling. Under his leadership, Big Ladder has released multiple free software tools, presented numerous training workshops, and launched popular web-based resources such as the Unmet Hours website and the EnergyPlus documentation website.


Tuesday, March 8
Presentation time: 12:00 p.m. – 1:00 p.m.
Q&A: 1:00 p.m. – 1:15 p.m.


Webinar presentation through GoToWebinar.
Webinar log-in information provided at event registration.
1 AIA LU continuing education credit pending for self-reporting.


Date: March 8, 2022

Time: 12:00 pm - 1:15 pm

Cost: Free

Event Category: Commercial, New Buildings, Training



Energy Trust

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