Benchmark-based Whole-Building Energy Performance Targets for UC Buildings

1. Benchmark-based Whole-Building Energy Performance Targets for UC Buildings Rashmi Sahai Sustainability Specialist University of California Office of the President October 8, 2013 rashmi.sahai@ucop.edu

2. Reasons to Move to Whole-Building Energy Performance Targets • California Energy Code Going to net zero • Static Baseline • Includes all building loads • Can carry design targets through to operations • Better integration with climate action goals

3. Benefits of Whole-Building Energy Performance Targets 2013 Code Change Level of Energy Efficiency Needed to Meet 2030 Title 24 Net-Zero Policy Goal Base Load Energy Not Regulated by Title 24

4. Method • Developed for UC Merced in 1999 • Collected whole-campus energy use and floor area data from eight UC and CSU campuses (UC Berkeley, UC Davis, UC Irvine, UC Riverside, UC San Diego, UC Santa Barbara, CSU Fresno, CSU Stanislaus) • This building energy load data correlated reasonably well with climate parameters and with density of buildings containing complex space (e.g., labs) – regression created • Regression equation used to develop climate-adjusted benchmarks for all other UC campuses.

5. Building Energy Performance Metrics

6. UC Building Energy Benchmarks by Campus Academic / Administrative Non-complex Space

7. UC Building Energy Benchmarks by Campus Housing Non-complex Space

8. UC Building Energy Benchmarks by Campus Lab/Complex Space

9. Implementation at UC Merced • Used in build-out of new campus • Started with a target of 80% of benchmark, and decreased this to 65% of benchmark • Design performance has been verified with measured data. • Now design goal is 50% of benchmark • All Buildings have gotten maximum points on LEED EA credit 1.

10. UC Santa Barbara Life Sciences BuildingOccupied in 2005, Certified LEED-EBOM Silver in 2010Current Usage Compared to Benchmark Merced’s Target for New Construction

11. UC San Francisco Health Sciences WestOccupied in 1966, Energy upgrades in last couple yearsCurrent Usage Compared to Benchmark

12. UC Davis Lab BuildingsCurrent Usage Compared to Benchmark

13. References • Brown, K., A. Daly, J. Elliott, C. Higgins, and J. Granderson. 2010. “Hitting the Whole Target: Setting and Achieving Goals for Deep Efficiency Buildings.” Proceedings of the 2010 ACEEE Summer Study of Energy Efficiency in Buildings. 3:28-39. Washington D.C.: American Council for an Energy-Efficient Economy. • Brown, K. 2002. "Setting Enhanced Performance Targets for a New University Campus: Benchmarks vs. Energy Standards as a Reference?" Proceedings of the 2002 ACEEE Summer Study of Energy Efficiency in Buildings. 4:29-40. Washington, D.C.: American Council for an Energy-Efficient Economy. • NBI. 2009a. “Measured Performance Case Study: Classroom and Office Building, UC Merced.” Available online: http://uc-ciee.org/buildings/ucmerced.html or http://www.newbuildings.org/document-library. New Buildings Institute. • NBI. 2009b. “Measured Performance Case Study: Science and Engineering Building I, UC Merced.” Available online: http://uc-ciee.org/buildings/ucmerced.html or http://www.newbuildings.org/document-library. New Buildings Institute.