Distribution System Modeling with GridLAB-D


Gridworks is partnering with Stanford National Accelerator Laboratory (SLAC), Hitachi, National Grid, and the Pacific Northwest National Lab (PNNL) leading three CEC EPIC projects to develop distribution system modeling tools to evaluate distributed energy resources.

Modeling software for power systems is undergoing significant development to address an increasingly complex electric grid. This initiative looks to address some of these most pressing needs by enhancing GridLAB-D, an open source distribution simulation and analysis modeling software developed by the U.S. Department of Energy. GridLAB-D is capable of dynamic analysis, estimation of the grid benefits and impacts of DERs, and support of decision making and planning processes on the distribution system.

This initiative looks to enhance GridLAB-D through three discrete projects, developing:

  1. An open source modeling framework and translation tool;
  2. High-performance computing in open source grid modeling; and
  3. An open source user interface for GridLAB-D.


Open Framework for Integrated Data Operations (OpenFIDO) is a data interchange, synthesis and analysis framework allowing interoperability between different power systems tools. This capability allows for a more reliable and efficient data exchange.

High-Performance Agent-Based Simulation using GridLAB-D (HiPAS GridLAB-D) is an open-source upgrade to GridLAB-D that speeds up the analysis performance and computational efficiency of the tool, using intelligent, adaptive multi-threading to deploy highly granular parallelization in agent-based simulations.

GridLAB-D Open Workspace (GLOW) looks to develop a high-end user interface for GridLAB-D that is more intuitive and user-friendly for all stakeholders, including non-expert users, to increase access to simulation and modeling results.

GridLAB-D Open Workspace (GLOW) Project Fact Sheet


Please email info@gridworks.org for more details.

Future Meetings

Apr 2

Meeting objective:  This meeting will provide an update on GLOW, HiPAS, and GridLAB-D progress, and demonstrate the Alpha release of OpenFIDO.

Agenda (Tentative) 

  • GLOW Update (Hitachi)
      • Project Plan Overview
      • GLOW Alpha Version with current updated
      • Major Activities
      • Next Steps
  • Updates on HiPAS and new capabilities of OpenFIDO projects (SLAC)
      • HiPAS
          1. Machine-learning powerflow solver initial performance results
          2. Commercialization plan update and activities underway
      • OpenFIDO
          1. Demonstration of Alpha release on 4 example use-cases
            • CYME-GridLAB-D model conversion
            • Integration capacity analysis
            • GridLAB-D model validation
            • NERC load composition synthesis
      • Commercialization plan update and activities underway
  • TAC members' input on ICA methodology validation through application to IOU systems. Specific questions that will be discussed during the meeting and require feedback from the TAC members include:
        • Missing features and use cases, and rank for development priority
        • General usability feedbacks
        • Available test models and data
        • Availability of testing and evaluation engineers
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April 2 at 1:00 pm - 3:00 pm PDT

Past Meetings

Sep 11

The next GridLAB-D Technical Advisory Committee meeting has been scheduled for September 11, 2020, from 9:00, am - 12:00 pm.

This meeting will provide an update on the development of the CEC’s GridLAB-D program, a distribution system modeling tool to evaluate distributed energy resources, including a live demonstration of the graphical user interface (GLOW).

This will be a virtual event.

Meeting Objectives:

  • Presentation of the prototype user interface GLOW and added capabilities of using GridLAB-D to analyze distributed energy resources  
  • Update the committee in the newer GridLAB-D capabilities. Machine learning power flow, development integration and electrification, tariff design and/or resilience use-cases.
  • Technical Advisory Committee feedback

Draft Agenda:

9:00 am - 9:15 am - Introduction(Dave Chassin, (SLAC))  

9:15am - 9:30am - OpenFIDO (SLAC)   

9:30am - 10:00am - HiPAS (SLAC)

10:00am - 10:15am - Feedback from TAC           

10:15am - 10:30am - Break           

10:30am – 11:30am - Glow Presentation (Hitachi)-  (Bo Yang & Joseph) 

11:30am - 11:45am - Feedback from TAC            

11:45am – 12:00pm - Next Steps and Adjourn


Join WebEx Meeting: 

Meeting number (access code): 126 202 5367
Meeting password: California (22543676 from phones and video systems)


Join by Phone: 

+1-408-418-9388 United States Toll

Global call-in numbers

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September 11, 2020 at 9:00 am - 12:00 pm PDT

Working Materials

Workshop – GLOW – IEEE-PES-Webinar

Fall 2020 TAC Meeting – Sep 11, 2020

Spring 2020 TAC Meeting – April 2, 2020

Fall 2019 TAC Meeting – September 5, 2019

Spring 2019 TAC Meeting – April 3, 2019

Fall 2018 TAC Meeting – September 6 & 7, 2018

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