ALEJANDRA MEJIA OCTOBER 22, 2015 Savings to Code Subcommittee: Update and Preview of Expected Deliverable.

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Presentation transcript:

ALEJANDRA MEJIA OCTOBER 22, 2015 Savings to Code Subcommittee: Update and Preview of Expected Deliverable

Executive Summary – Deliverable October 22, 2015 Savings To Code Update and Preview 2 Background  Stringent Codes & Standards and code baseline default were limiting reach of ratepayer-funded programs  Issue slated for discussion in 2017, Rolling Portfolio Phase III  Opportunity came sooner than expected: AB 802 mandates code baseline for all applicable measures by Fall 2016 Process “Interim Deliverables”  Categorization of To Code opportunity types  Annotated bibliography of existing literature and other resources Key Findings:  “Repair Indefinitely” measures are the highest To Code opportunity  Two examples ready for workpaper development  Further data requirements for individual projects would create necessary barriers Key Question:  Should the Cal TF consider developing/reviewing “to code” measure in 2016?

Savings To Code Subcommittee Armen Saiyan, TF Doug Mahone, TF Martin Vu, TF Mary Matteson Bryan, TF Spencer Lipp, TF Andrew Brooks, TF Christopher Rogers, TF Tom Eckhart, TF Sherry Hu, TF Non-TF: Nicholas Dirr, Kevin Messner, Marc Costa 3 January 22, Crosscutting Technical Positions Objectives Characterize key below code opportunities being missed Quantify possible savings from key opportunities, such that:  PAs can begin capturing savings “stranded by code”  Minimize ratepayer expenditures on free rider activities  Saving claims are not “double counted”

Opportunity Categorization April 23, 2015 Savings Below Code Subcommittee 4 To Code Opportunities in Existing Buildings Code Noncompliance Permitted Alterations Non-Permitted Alterations Missed Opportunities in Existing Buildings Code Triggers— skylights, etc. Non-Code Triggers— programmable thermostats, etc. “Repair Indefinitely”

Key Criteria Examples October 22, 2015 Savings To Code Update and Preview Failure mode is not catastrophic  Kept in service indefinitely through repairs and part replacements History of rebuild/repair rather than replace Far less expensive to rebuild/repair than to replace Large electric motors  Often rewound Large pumps and fans  Difficult to replace, easier to repair Windows  Often last the lifetime of the building 5 What is a Repair Indefinitely (RI) Measure?

October 22, 2015 Savings To Code Update and Preview 6 Key Recommendation One: Adopt Repair Indefinitely as a DEEMED Measure Type

Proposed Rule Set for “Deeming” RI Measures September 2015 Discussion: Repair Indefinitely Rule Sets 7 Code Baseline for Full or 2/3 UEL Functioning Equipment? Existing Conditions Baseline No Yes No Yes Meet RI Criteria? 1. Failure mode not catastrophic 2. History of repair 3. Cheaper to repair All Determined Ex Ante

October 22, 2015 Savings To Code Update and Preview 8 Key Recommendation Two: Only Require a Level of Rigor that Can be Met by AVAILABLE Data As long as there is enough confidence in the data/results

RI Characterization One: Steam and Hot Water Boilers October 22, 2015 Savings To Code Update and Preview 9 Existing sample of 177 boilers replaced by a Federal program in San Francisco  Exact age of replaced equipment is very costly and virtually impossible to determine  Cal TF staff used combination of primary document review and exercise of professional judgment (via program manager and experts)  Determined that 138 of the boilers replaced had been maintained in service decades past their DEER EULs  Only 6 determined as replacements upon equipment burn out San Francisco Environment reported 164,465 Therms per year for the entire project – 1,000 average Therms per year per project  Savings distribution heavily skewed to greater savings per project

RI Characterization Two: Multifamily Windows October 22, 2015 Savings To Code Update and Preview 10 Sample of 58 multifamily buildings retrofitted in BayREN territory  Building age proxy for age of replaced single pane, aluminum frame windows: Modeled savings: 2.9 Therms or 38.1 kWh per window

Conclusion October 22, 2015 Savings To Code Update and Preview 11 There are significant To Code opportunities being missed by today’s EE programs  Repair Indefinitely opportunities are the “lowest hanging fruit” in the To Code tree  Perfect for for the High Opportunity list required by AB 802 Repair Indefinitely measures should be deemed for ex ante savings estimates  Multifamily boilers and windows have already been characterized by the subcommittee Only the level of rigor achievable by available data should be required for deeming RI measures

Question for Cal TF October 22, 2015 Savings To Code Update and Preview 12 Should Cal TF consider developing/reviewing “to code” workpaper for CPUC approval in early 2016?

October 22, 2015 Savings To Code Update and Preview 13 “Authorize electrical corporations or gas corporations to provide financial incentives, rebates, technical assistance, and support to their customers to increase the energy efficiency of existing buildings based on all estimated energy savings.” High Opportunity measures starting January 1 st, 2016 All other applicable measures September 16 th, 2016 Appendix: AB 802 Language

Appendix: Measure for Further Study – Commercial Rooftop HVAC October 22, 2015 Savings To Code Update and Preview 14 Sample of over 50,000 commercial units maintained by EE implementers statewide Potential savings averaged across building types and climate zones: 174 kWh per ton of handling capacity Found 14,127 of the units were in operation past 15- year DEER EUL – 2,403 were 25 years or older  Distribution of equipment age not enough for subcommittee to recommend deeming as RI  Further data analysis needed to establish more accurate equipment lifetime