California Statewide Residential Appliance Saturation Study
Welcome to the 2019 Residential Appliance Saturation Study Reporting Center!
 

 

The 2019 RASS provides a snapshot of California household equipment and average energy consumption in 2019 that can be compared to results from the two previous RASS study years 2009 and 2003.

Use the tabs above to explore the study results:

  • Saturation Tables provides the ability to design queries of the RASS data to generate tables of survey results for one study year (2019, 2009 or 2003) or to compare across two years (2019 vs. 2009, 2019 vs. 2003 or 2009 vs. 2003)
  • UEC Tables provides the capability to download static tables of estimates of annual unit energy consumption values for household equipment from one study year (2019, 2009 or 2003) or across all three study years (2019 to 2009 to 2003)


Overview of the California Energy Commission's Residential Appliance Saturation Study

From 2018 to 2020, the California Energy Commission funded and administered a Residential Appliance Saturation Study that serves as an update to the 2009 RASS, with the following utilities participating: Pacific Gas and Electric Company (PG&E), Southern California Edison (SCE), Sacramento Municipal Utility District (SMUD), San Diego Gas & Electric Company (SDG&E), Southern California Gas Company (SoCalGas), and Los Angeles Department of Water and Power (LADWP). DNV Energy Insights (formerly KEMA, Inc.) was the prime consultant for this study as well as the 2009 and 2003 studies.

The research team implemented the study as online and mailed paper surveys. The surveys requested households to provide information on appliances, equipment, and general consumption patterns, including electric vehicle (EV) charging and the presence of renewable energy technology such as a solar photovoltaic (PV) system. The research team completed data collection in early 2020 just before the full impact of COVID-19 events.

The study yielded energy consumption estimates for 28 electric and nine natural gas residential end uses and appliance saturations for households. The project team developed these consumption estimates using a conditional demand analysis, an approach that applied statistical methods to combine survey responses, household energy consumption data, and weather information to calculate average annual consumption estimates per appliance. The 2019 RASS resulted in end-use saturations for 39,682 individually metered and 303 master-metered households. The team weighted survey and conditional demand analysis results to provide population-level estimates, representative of the participating utilities that allow comparison across utility service territories, forecasting climate zones, and other variables of interest including dwelling type, dwelling age group, and income.




Documents
YearTitleDescriptionLast Updated
2019 2019 Executive SummaryStatewide abbreviated summary of 2019 study results - 15 pages05/26/2021
2019 2019 Project OverviewStatewide 2019 study results, similar to Exec Summ in prior studies - 63 pages05/26/2021
2019 2019 Volume 1: MethodologyDescription of 2019 study design, process and overview of results - 143 pages05/26/2021
2019 2019 Volume 2: Study ResultsDetailed 2019 UEC results, Load Profies and Gas Daily Use - 43 pages05/26/2021
2019 2019 AppendicesAppendices A through P for the 2019 study- 196 pages05/26/2021
2019 2019 Banner subset - LADWPSubset of Volume 2 banners - 2019 Results for LADWP - 5 Excel workbooks05/26/2021
2019 2019 Banner subset - PG&ESubset of Volume 2 banners - 2019 Results for PG&E- 5 Excel workbooks05/26/2021
2019 2019 Banner subset - SCESubset of Volume 2 banners - 2019 Results for SCE- 5 Excel workbooks05/26/2021
2019 2019 Banner subset - SoCalGasSubset of Volume 2 banners - 2019 Results for SoCalGas- 5 Excel workbooks05/26/2021
2019 2019 Banner subset - SDG&ESubset of Volume 2 banners - 2019 Results for SDG&E- 5 Excel workbooks05/26/2021
2019 2019 Banner subset - SMUDSubset of Volume 2 banners - 2019 Results for SMUD- 5 Excel workbooks05/26/2021
2019 2019 Banner subset - CA statewideSubset of Volume 2 banners - 2019 CA Statewide Results - 5 Excel workbooks05/26/2021
2009 2009 Executive SummaryStatewide overview of 2009 study results - 46 pages10/13/2010
2009 2009 Volume 1: MethodologyDescription of 2009 study design, process and overview of results - 145 pages10/13/2010
2009 2009 Volume 2: Study ResultsDetailed 2009 UEC results - 27 pages10/13/2010
2009 2009 AppendicesAppendices A through O for the 2009 study10/13/2010
2009 2009 Banner subset - CEC Forecast Zone and RASS TotalSubset of Volume 2 banners - 2009 Results by CEC Forecast Zone and RASS Total10/13/2010
2009 2009 Banner subset - LADWP Subset of Volume 2 Banners - LADWP results for 200910/13/2010
2009 2009 Banner subset - PG&E Subset of Volume 2 Banners - PG&E results for 200910/13/2010
2009 2009 Banner subset - SCESubset of Volume 2 Banners - SCE results for 200910/13/2010
2009 2009 Banner subset - SDG&E Subset of Volume 2 Banners - SDG&E results for 200910/13/2010
2009 2009 Banner subset - SoCalGas Subset of Volume 2 Banners - SoCalGas results for 200910/13/2010
2003 2003 Executive Summary Statewide overview of 2003 study results - 42 pages06/30/2020
2003 2003 Volume 1 - Methodology and Appendices Description of 2003 study design, process, and overview of results - 417 pages10/13/2010
2003 2003 Volume 1 - Methodology Description of 2003 study design, process, and overview of results - 162 pages10/13/2010
2003 2003 Volume 2 - Study Results and Banners Detailed 2003 UEC results and saturation banners - 7387 pages10/13/2010
2003 2003 Volume 2 - Study Results Detailed 2003 UEC results - 30 pages10/13/2010
2003 2003 Banner subset - RASS TotalSubset of Volume 2 Banners - 2003 RASS total results10/13/2010
2003 2003 Banner subset - LADWP Subset of Volume 2 Banners - LADWP results for 200310/13/2010
2003 2003 Banner subset - PG&E Subset of Volume 2 Banners - PG&E results for 200310/13/2010
2003 2003 Banner subset - SCESubset of Volume 2 Banners - SCE results for 200310/13/2010
2003 2003 Banner subset - SDG&E Subset of Volume 2 Banners - SDG&E results for 200310/13/2010
2003 2003 Banner subset - SoCalGas Subset of Volume 2 Banners - SoCalGas results for 200310/13/2010
2003 2003 Revised RASS Report Final report describing updated AC UEC values using 2004 billing data10/13/2010