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2020 Annual Conference and Training - CDP Exam

CDP Exam

The CDP exam will be offered twice during the conference and training week - once on Wednesday, 9/16 in the morning and once on Friday, 9/18 in the afternoon. Test takers may not take the exam more than once during the week and payment is due prior to sitting for the exam. You must be an SDP member to take the exam and qualify for the CDP.


Registration for the exam is available through the conference and registration page (click the button below). You are not required to attend any of the conference and training in order to sit for the exam, though it is an excellent opportunity to prepare and refresh your knowledge in advance of sitting for the exam. 


Additional Exam Details


1. The exam has two sections-- Ethics andTechnical.

2. The Ethics section of the exam includes questions about the SDP Code of Ethics and the SDP Standards of Professional Conduct.

3. The Technical part of the exam includes questions in the following areas:

-Plant and Reserve Accounting

-Life Analysis Concepts

-Life Analysis Using Actuarial Models

-Life Analysis Using Simulation Models

-Salvage and Cost of Retiring Analysis

-Technology Forecasting

-Depreciation Calculations


4. To pass the exam, a minimum score of 70% is required on the Ethics part of the exam. Additionally, a score of 70% is required on the Technical part of the exam OR on the Ethics and Technical parts combined.
5. An applicant who has twice unsuccessfully taken the exam must wait a minimum of 1 year before retaking the exam.

6. Exam results are sent within 30 days of second exam seating. 


Recommended Study Material

SDP currently offers the Depreciation Systems textbook by Wolf and Fitch, Bulletin 125, and Bulletin 155 on our website as a gift with donations to our Education Fund, see details here. The other resources can be found online, in libraries, or by reaching out directly to the publishing organization listed with the title.


-American Gas Association (AGA) and Edison Electric Institute (EEI), Introduction to Depreciation for Public Utilities and Other Industries, 2003, AGA (, EEI ( Available for purchase online here
-Marston, Winfrey, and Hempstead, Engineering Valuation and Depreciation, Iowa State University Press, 1953.
-National Association of Regulatory Utility Commissioners (NARUC), Public Utility Depreciation Practices, NARUC, 1996, (
-Porter, Roper, Mason, Rossini, and Banks, Forecasting and Management of Technology, John Wiley and Sons, NY, 1991.
-Vanston, John, Technology Forecasting: An Aid to Effective Technology Management, Technology Futures, Austin, TX, 1988.
-Winfrey, Robley, Bulletin 125: Statistical Analyses of Industrial Property Retirements, 1935 as revised 1967, Iowa State University Engineering Publications and Communications Services.
-Winfrey, Robley, Bulletin 155: Depreciation of Group Properties, Iowa State University Engineering Publications and Communications Services.
-Wolf and Fitch, Depreciation Systems, Iowa State University Press, 1992.
-Wolf, Fitch, and Bissinger, Estimation of Depreciation, Iowa State University Press, (515) 292-0155.





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