At Distributech 2018 … Learn about Pepco Holding Incorporated’s use of EDD’s Integrated System Model technology for DER analysis and Big Data

The DEW/ISM software from Electrical Distribution Design represents a new paradigm in modeling and analysis for electric utilities.  Come listen to Steve Steffel, Manager of Regional Capacity Planning – Distributed Energy Resources, speak on Tuesday, January 23rd at 3 pm in the session:  Real World Experiences Streamlining DER Interconnection Studies.  Steve’s presentation, entitled “Big Data Analytics at Pepco Holdings: Integrated System Model,” will describe the implementation of DEW/ISM that includes a 1.9M meter Integrated System Model of PHI’s primary and secondary system.  The ISM includes over 730 MW’s of DER and an 8760 hourly load model for all 1.9M customers with net-metered accounts separated into native load and DER output.  The ISM provides a platform for automating engineering analysis and maintaining model data quality that is critical for managing the modern smart grid.

EDD’s Chief Technical Officer, Dr. Robert Broadwater, will be on hand to answer questions and to meet with interested parties to discuss the DEW/ISM technology.

Visit our website <> or contact us <> for more information on EDD or the DEW/ISM software.


EDD presents at WPI Seventh Annual Energy Symposium: Engineering Impacts from Energy Policy

EDD’s Dr. Jason Bank (Principal Engineer) and James Tarpey (Executive Consultant) will be presenting at the September 28th WPI Energy Symposium.  Their talk will be part of the session:  “State Policies Driving Engineering Changes.”

EDD provides the DEW/ISM advanced network modeling and analysis software product to electric utility clients.  The presentation will center on specific client use cases of DEW/ISM where regulatory policy changes are causing utilities to reinvent how engineers model, analyze, and design distribution systems to integrate increasing levels of Distributed Energy Resources (DER).

DEW/ISM has significant market advantages over traditional engineering software for building and maintaining large detailed Integrated System Models of electric distribution and/or transmission systems.  With DEW/ISM engineers can connect and make use of measurements from AMI, SCADA, PV, storage and other smart devices.  Automation of engineering analysis with DEW/ISM reduces the cost and time required for DER interconnection requests, and provides for more consistent results.

Click here to view the presentation.

Visit our website <> or contact us <> for more information on EDD or DEW/ISM software.


EDD presents at 2017 IEEE PES General Meeting

At the 2017 IEEE PES General Meeting in Chicago, EDD’s Jason Bank was an invited speaker on the panel Advancing Distribution System Modelling Tools for PV Integration. His presentation, DEW-ISM Implementation at PEPCO: A Model and Data Driven Approach to Automating PV Interconnection Studies, covered results from an ongoing project at PEPCO to automate the analysis of PV interconnection studies.  The project at PEPCO starts with the construction of an Integrated System Model of the entire distribution and secondary system. The primary model has 2.4M components and the secondary model has 3.9M components.  The model is updated from GIS, hourly meter data and SCADA.  A production version of the model is maintained in memory to support a multitude of engineering analysis functions that run in the DEW software at very fast speeds on a small processor.  The DEW/ISM solution is integrated to the DER queue manager application to enable automatic analysis of DER interconnection requests.


View the presentation here  …  IEEE PES GM 2017 Pres jbank

Visit our website <> or contact us <> for more information on EDD or DEW/ISM software.



PEPCO Holdings uses DEW/ISM to Calculate DER Hosting Capacity

Pepco Holdings (PHI) has gone live with their DER Hosting Capacity website  The site enables any stakeholder to view an interactive map to determine how much renewable energy and other distributed energy resources can be connected to the distribution system.  The Hosting Capacity is calculated using the DEW/ISM software from EDD, and the results are displayed on a geospatial interactive map.  The EDD Hosting Capacity algorithm is run against the Integrated System Model of PHI’s distribution system.  The ISM is part of EDD’s software solution.  The ISM is a geospatial power-flow model that includes PHI’s 1.9M metered customers with 8,760 hourly load models for each customer, 2,248 primary circuits, 356,000 distribution transformers with secondary conductors, 49 downtown networks, 338 substations and approximately 65,000 DER representing 731 MW’s.  The advantage of the EDD Hosting Capacity approach using the ISM model is that many thousands of power-flow runs are made so that a highly accurate estimate of hosting capacity can be provided.  For further information about EDD products and services, including Hosting Capacity analysis, please visit our website ( or contact us ( for a product demonstration.


EDD becomes Associate Member in CURENT at University of Tennessee; DEW/ISM to be used in Transmission Networks research

The University of Tennessee has established the Engineering Research Center for Ultra-wide-area Resilient Electric Energy Transmission Networks (called “CURENT”).  The purpose of CURENT is to establish a mechanism whereby the educational and research environment can be used to develop better understanding of electric power engineering and related fields, and simulate industrial innovation.

Electrical Distribution Design, Inc. of Blacksburg, VA has been invited and has agreed to join CURENT as an Associate Member as part of the Industrial Partners Program.  EDD will provide DEW/ISM software licenses and technical support to the CURENT team.

Member organizations include the University of Tennessee, National Science Foundation, Department of Energy and the State of Tennessee.  Partnering Universities include Rensselaer Polytechnic Institute, Northeastern University and Tuskegee University.

The DEW/ISM (Distributed Energy Workstation/Integrated System Model) is a commercial software program for advanced modeling and analysis that is being used by leading electric utilities and related businesses.  DEW/ISM provides integrated system models for unbalanced three-phase power flow solutions of transmission, substation and distribution systems of any size and complexity.  DEW/ISM is the only power flow software that utilizes Graph Trace Analysis (GTA) for modeling and analyzing electric networks.  EDD’s Chief Technical Officer and Virginia Tech professor, Dr. Robert Broadwater, is the inventor of GTA.

Visit our website <> or contact us <> for more information on EDD or DEW/ISM software.