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Judy Chang
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Judy Chang

Principal

Cambridge
Judy.Chang@brattle.com
Voice: +1.617.864.7900
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Education

Harvard University, Kennedy School of Government, Master's in Public Policy; University of California at Davis, B.Sc. in Electrical Engineering
 

Biography

Judy Chang is an economist with a public policy background. She has expertise in the analysis of electricity power markets and advises clients on the financial and regulatory issues relating to renewable energy investment and procurement decisions. She is experienced in leading utility executives, board members, and stakeholders in making challenging strategic decisions complicated by pressures from customers, policy-makers, regulators, and wholesale and retail competitors. Ms. Chang’s recent long-term strategic planning engagements have involved the development of future energy market scenarios and assisting utilities to make strategic decisions that balance regulatory requirements for renewable energy, energy efficiency, other demand-side resources, with the potential retirement of existing generation facilities due to various environmental regulations. These projects involved close analyses of relevant regulatory and economic issues surrounding system planning, including considerations for financial, operational, and market design issues.

Ms. Chang has authored numerous expert reports and submitted expert testimony before the U.S. Federal Energy Regulatory Commission and state regulatory authorities regarding power market issues. She has served as an expert witness in regulatory proceedings and litigation settings. Recently, she was an expert witness in evaluating long-term power purchase agreements between renewable energy developers and electric utilities. Her other recent work includes evaluating the potential impact of integrating renewable energy onto power systems. Accordingly, she has designed and helped develop a model that estimates the operational effects and the associated costs of variable resources on a grid.

Ms. Chang has authored a number of articles and reports and presented at a variety of industry conferences. She recently spent two years in India, where she worked on evaluating and financing renewable energy investments for international and multilateral agencies. She holds a Master’s in Public Policy from Harvard University’s Kennedy School of Government, is a member of the Board of Directors of the Massachusetts Clean Energy Center, and the founding Executive Director of New England Women in Energy and the Environment.
 

Selected Publications

  • "Bridging the Seams: Interregional planning under FERC Order 1000 (external link)," by Johannes P. Pfeifenberger, Judy Chang, and Delphine Hou, Public Utilities Fortnightly, November 2012.
  • "Challenges of Renewable Integration: Comparison of Experiences," by Judy Chang, The Brattle Group, Inc., presented at the 4th Annual Renewable Energy Technology Conference & Exhibition, Washington, DC, October 18, 2012.
  • "Energy Supply and Demand: “A Market Perspective”," by Judy Chang, The Brattle Group, Inc., presented at the EnergySMART 2012 Conference, Boston, MA, October 3, 2012.
  • "The Future of Electric Utilities in the U.S. and China," by Peter S. Fox-Penner and Judy Chang, The Brattle Group, Inc., presented to the State Grid Energy Research Institute, Beijing, China, June 25, 2012.
  • "The Potential Impact of Solar PV on Electricity Markets in Texas," by Jürgen Weiss, Judy Chang, and Onur Aydin, The Brattle Group, Inc., prepared for the Solar Energy Industries Association and the Energy Foundation, June 19, 2012.
  • "Estimating the Socioeconomic Value of Satellite-Derived Solar & Meteorological Data: A Case Study and Discussion of Tradeoffs," by Judy Chang, The Brattle Group, Inc., presented at the Workshop on Defining, Measuring, and Communicating the Socio-economic Benefits of Geospatial Information/GEOSS 2012, Boulder, CO, June 14, 2012.
  • "Policy Challenges Associated with Renewable Energy Integration (external link)," by Judy Chang, Peter S. Fox-Penner, and Philip Q Hanser, The Brattle Group, Inc., prepared for the 2011 MITEI Symposium: Managing Large-Scale Penetration of Intermittent Renewables, April 2011.
  • "Policy Challenges Associated with Renewable Energy Integration," by Judy Chang, The Brattle Group, Inc., presented at the 2011 MIT Energy Initiative Symposium on Managing Large-Scale Penetration of Intermittent Renewables, April 2011.
  • "Renewable Integration: Quantifying the Effects of Variable Energy Resources," by Judy Chang, The Brattle Group, Inc., January 24, 2011.
  • "Shareholder Incentives: Ratemaking Mechanisms for Sustainable Energy Efficiency Programs," by Judy Chang, The Brattle Group, Inc., presented at the Law Seminar International Conference on Electric Utility Rate Cases, Boston, Massachusetts, November 9, 2010.
  • "Looking Forward: High Wind and Solar Penetration on the Grid," by Judy Chang, The Brattle Group, Inc., presented at the NARUC Renewable Energy Retreat, Riverside, CA, October 7, 2010.
  • "Renewable Integration Model Presentation," by Judy Chang and Philip Q Hanser, The Brattle Group, Inc., presented at the California Public Utility Commission’s Long-Term Procurement Plan Workshop, San Francisco, CA, August 25, 2010.
  • "Renewable Energy Integration: Issues and Analyses," by Judy Chang, The Brattle Group, Inc., presented at the EUCI Conference on Renewable Energy Development and Transmission Expansion, Portland, OR, August 11, 2010.
  • "Plugging In: Can the grid handle the coming electric vehicle load?," by Dean M. Murphy, Marc Chupka, Onur Aydin, and Judy Chang, Public Utilities Fortnightly, June 2010.
  • "Renewable Integration Model and Analysis," by Judy Chang, Ross Baldick, Antonio Alvarez, and Philip Q Hanser, The Brattle Group, Inc.; poster presented by Kamen Madjarov at IEEE 2010 Transmission and Distribution Conference and Exposition, New Orleans, LA, April 21, 2010.
  • "Renewables and Storage: Does Size Matter," by Judy Chang and Jurgen Weiss, The Brattle Group, Inc., presented at the 15th Annual POWER Research Conference on Energy Research and Policy, University of California, Berkeley, March 18, 2010.
  • "Renewables and Storage – Does Size Matter?," by Judy Chang, Kathleen Spees, and Jürgen Weiss, The Brattle Group, Inc., March 11, 2010.
  • "Job and Economic Benefits of Transmission and Wind Generation Investments in the SPP Region," by Johannes P. Pfeifenberger, Judy Chang, and Delphine Hou, The Brattle Group, Inc., March 2010.
  • "2010 Integrated Resource Plan for Connecticut," by Samuel A. Newell, Dean M. Murphy, Marc Chupka, Judy Chang, and Mariko Geronimo, The Brattle Group, Inc., January 1, 2010.
  • "Update on Renewable Energy Market Trends," by Judy Chang, The Brattle Group, Inc., presented at a Seminar on Financing Clean Energy Projects under the Reinvestment Act of 2009, (organized by Environment Business Council of New England), June 11, 2009.
  • "Assessment of a Maine ISA Structure as a Possible Alternative to ISO-NE Participation," by Ken Belcher, Johannes P. Pfeifenberger, Judy Chang, and Delphine Hou, The Brattle Group, Inc., May 2009.
  • "Transmission Super Highways: Assessing the Potential Benefits of Extra-High-Voltage Transmission Overlays in the Midwest," by Peter S. Fox-Penner, Judy Chang, Delphine Hou, and Ryan Hledik, The Brattle Group, Inc., March 2009.
  • "2009 Integrated Resource Plan for Connecticut," by Onur Aydin, Judy Chang, Marc Chupka, Mariko Geronimo, Dean M. Murphy, Samuel A. Newell, and Joseph B. Wharton, The Brattle Group, Inc., January 1, 2009.
  • "International Renewable Energy Financing," by Judy Chang, The Brattle Group, Inc., presented at Euromoney’s Renewable Energy Finance Forum, New Delhi, India, November 30, 2006.
  • "Wind Power Grid Integration: How to Evaluate Potential Grid Impact of Proposed Wind Projects," by Judy Chang, The Brattle Group, Inc., presented at the Electric Power 2005 Conference, April 6, 2005.
  • "LMPs/FTRs Alone Will Not Solve Transmission Problems Blackout Showed," by Philip Q Hanser and Judy Chang, Natural Gas & Electricity, November 2003.
  • "Transmission Management in the Deregulated Electric Industry – A Case Study on Reactive Power," by Judy Chang, The Brattle Group, Inc., presented at the Ancillary Services Conference, Denver, CO, October 9, 2003.
  • "Transmission Management in the Deregulated Electric Industry: A Case Study on Reactive Power," by Dean M. Murphy, Frank C. Graves, and Judy Chang, The Electricity Journal, October 2003.
  • "Regulatory Design for Reactive Power and Voltage Support Services," by Judy Chang, The Brattle Group, Inc., presented to the Comisión de Regulación de Energía y Gas, Bogotá, Colombia , December2001.
  • "International Review of Reactive Power Management," by Judy Chang, The Brattle Group, Inc., ”, presented to the Comisión de Regulación de Energía y Gas, Bogotá, Colombia, May 4, 2001.

Selected Testimony

  • "Testimony and Exhibits of Judy W. Chang and Jürgen Weiss, Ph.D. in Response to the Petition of Western Massachusetts Electric Company (WMECO), for approval of power purchase agreements between WMECO and one on-shore wind projects, before the Massachusetts Department of Public Utilities, D.P.U. 11-12," by Judy Chang and Jurgen Weiss, June 21 2011.
  • "Testimony (Oral) of Judy W. Chang and Dr. Jurgen Weiss in Response to NSTAR Electric Company’s Petitions for Approval of a Purchase Power and Renewable Energy Certificate Contract in accordance with the requirements of the Act Relative to Green Communities (St. 2008, c. 169, § 83) and the Request for Proposal Process approved by the Department of Public Utilities in D.P.U. 10-76, before the Massachusetts Department of Public Utilities, Dockets No. 11-05, 11-06 and 11-07," by Judy Chang and Jurgen Weiss, June 2011.
  • "Direct Prefiled Testimony of Judy W. Chang and Dr. Jurgen Weiss in Response to NSTAR Electric Company’s Petitions for Approval of a Purchase Power and Renewable Energy Certificate Contract in accordance with the requirements of the Act Relative to Green Communities (St. 2008, c. 169, § 83) and the Request for Proposal Process approved by the Department of Public Utilities in D.P.U. 10-76, before the Massachusetts Department of Public Utilities, Dockets No. 11-05, 11-06 and 11-07," by Judy Chang and Jurgen Weiss, May 27, 2011.
  • "Testimony (Oral) of Dr. Jurgen Weiss and Judy W. Chang in Response to the Petition of Massachusetts Electric Company and Nantucket Electric Company d/b/a National Grid for approval by the Department of Public Utilities of amended power purchase agreements between National Grid and Cape Wind Associates, LLC., before the Massachusetts Department of Public Utilities, Docket No. 10-54," by Judy Chang and Jurgen Weiss, September 2010.
  • "Direct Prefiled Testimony of Dr. Jurgen Weiss and Judy W. Chang in Response to the Petition of Massachusetts Electric Company and Nantucket Electric Company d/b/a National Grid for approval by the Department of Public Utilities of amended power purchase agreements between National Grid and Cape Wind Associates, LLC., before the Massachusetts Department of Public Utilities, Docket No. 10-54," by Jürgen Weiss and Judy Chang, August 20, 2010.
  • "Prepared Joint Direct Testimony of Judy Chang and Philip Hanser, on Behalf of the City of Vernon, California in its Prepared Petition for Declaratory Order and Request for Waiver of Filing Fee of City of Vernon, California, before the Federal Energy Regulatory Commission (FERC) Docket No. EL09-64-000," by Judy Chang and Philip Hanser, July 15, 2009.
  • "Comment—“A Marginal –Value Approach to Pricing Reactive Power Services” in Principles for Efficient and Reliable Reactive Power Supply and Consumption, before the Federal Energy Regulatory Commission (FERC), Docket No. AD05-1-000," by Judy Chang, Philip Q Hanser, and Martin Baughman, April 4, 2005.
  • "Prepared Joint Affidavit of Judy Chang and Philip Hanser on behalf of Northeast Utilities Service Company and affiliated companies’ market-based rate authorization, before the Federal Energy Regulatory Commission (FERC), Docket No. ER96-496-010, et al.," by Judy Chang and Philip Hanser, September 27, 2004, Revised December 9, 2004.
  • "Prepared Joint Affidavit of Judy Chang and Philip Hanser on behalf of Northeast Utilities, Devon Power LLC, et. al., before the Federal Energy Regulatory Commission (FERC), Docket No. ER03-563-030," by Judy Chang and Philip Hanser, March 24, 2004.
 

Areas of Expertise