U.S. Department of Energy - Energy Efficiency and Renewable Energy

Building Technologies Program – Appliances and Commercial Equipment Standards

Distribution Transformers NOPR Technical Support Document

This Technical Support Document (TSD) provides the technical analyses and results in support of the information presented in the Notice of Proposed Rulemaking (NOPR) for distribution transformers.

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Title Page (PDF 16 KB)
Table of Contents (PDF 290 KB)
List of Acronyms and Abbreviations (PDF 64 KB)
Chapters
Chapter 1. Introduction (PDF 77 KB)
Chapter 2. Analytical Framework (PDF 180 KB)
Chapter 3. Market and Technology Assessment (PDF 400 KB)
Chapter 4. Screening Analysis (PDF 129 KB)
Chapter 5. Engineering Analysis (PDF 3.9 MB)
Chapter 6. Energy Use and End-Use Load Characterization (PDF 215 KB)
Chapter 7. Markups for Equipment Price Determination (PDF 76 KB)
Chapter 8. Life-Cycle Cost and Payback Period Analyses (PDF 672 KB)
Chapter 9. Shipments Analysis (PDF 182 KB)
Chapter 10. National Impact Analysis (PDF 248 KB)
Chapter 11. Life-Cycle Cost Subgroup Analysis (PDF 137 KB)
Chapter 12. Manufacturer Impact Analysis (PDF 479 KB)
Chapter 13. Utility Impact Analysis (PDF 484 KB)
Chapter 14. Net National Employment Impact (PDF 78 KB)
Reports
Report 1 Environmental Assessment (PDF 182 KB)
Report 2 Regulatory Impact Analysis (PDF 171 KB)
Appendices
Appendix 3A Core Steel Market Analysis (PDF 294 KB)
Appendix 5A Supplementary Engineering Analysis Results (PDF 4.5 MB)
Appendix 5B Scaling Relationships in Transformer Manufacturing (PDF 317 KB)
Appendix 5C Q1 2005 Material Pricing Analysis (PDF 5.4 MB)
Appendix 8A Life Cycle Cost and Payback Period Results (PDF 864 KB)
Appendix 8B Uncertainty and Variability (PDF 51 KB)
Appendix 8C Sample Utilities (PDF 58 KB)
Appendix 8D Life-Cycle Cost Sensitivity Results (PDF 1.8 MB)
Appendix 8E Average Transformer Design Properties from Life-Cycle Cost Model (PDF 273 KB)
Appendix 10A User Instructions for Shipments and National Impact Analysis Spreadsheet Model (PDF 59 KB)
Appendix 10B National Energy Savings and Net National Present Value Results (PDF 580 KB)
Appendix 11A Life-Cycle Cost Subgroup Results (PDF 777 KB)
Appendix 12A Manufacturer Impact Analysis Interview Guides: Liquid-Immersed and Medium-Voltage, Dry-Type (PDF 234 KB)
Appendix 12B Manufacturer Impact Analysis Small Business Interview Guide (PDF 87 KB)
Appendix 12C Government Regulatory Impact Model (GRIM) Supporting Documentation (PDF 164 KB)
Appendix 13A NEMS-BT Extension Modeling Beyond 2025 (PDF 69 KB)