| Overall Rating | Gold |
|---|---|
| Overall Score | 79.54 |
| Liaison | Kelli O'Day |
| Submission Date | June 20, 2023 |
University of California, Davis
OP-5: Building Energy Efficiency
| Status | Score | Responsible Party |
|---|---|---|
|
4.96 / 6.00 |
Camille
Kirk Director of Sustainability and Campus Sustainability Planner Office of Sustainability |
"---"
indicates that no data was submitted for this field
Part 1. Site energy use per unit of floor area
Performance year energy consumption
| kWh | MMBtu | |
| Imported electricity | 186,518,683 Kilowatt-hours | 636,401.75 MMBtu |
| Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) | 29,705,834.65 Kilowatt-hours | 101,356.31 MMBtu |
Stationary fuels and thermal energy, performance year (report MMBtu):
| MMBtu | |
| Stationary fuels used on-site to generate electricity and/or thermal energy | 1,020,071.01 MMBtu |
| Imported steam, hot water, and/or chilled water | 0 MMBtu |
Total site energy consumption, performance year:
1,757,829.06
MMBtu
Performance year building space
13,933,790
Gross square feet
Floor area of energy intensive space, performance year:
| Floor area | |
| Laboratory space | 2,130,139 Square feet |
| Healthcare space | 220,328 Square feet |
| Other energy intensive space | 692,159 Square feet |
EUI-adjusted floor area, performance year:
19,326,883
Gross square feet
Performance year heating and cooling degree days
| Degree days | |
| Heating degree days | 2,847.90 Degree-Days (°F) |
| Cooling degree days | 1,784.10 Degree-Days (°F) |
Total degree days, performance year:
4,632
Degree-Days (°F)
Performance period
| Start date | End date | |
| Performance period | Jan. 1, 2021 | Dec. 31, 2021 |
Metric used in scoring for Part 1
19.64
Btu / GSF / Degree-Day (°F)
Part 2. Reduction in source energy use per unit of floor area
Baseline year energy consumption
STARS 2.2 requires electricity data in kilowatt-hours (kWh). If a baseline has already been established in a previous version of STARS and the institution wishes to continue using it, the electricity data must be re-entered in kWh. To convert existing electricity figures from MMBtu to kWh, simply multiply by 293.07107 MMBtu/kWh.
| kWh | MMBtu | |
| Imported electricity | 238,796,440 Kilowatt-hours | 814,773.45 MMBtu |
| Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) | 0 Kilowatt-hours | 0 MMBtu |
Stationary fuels and thermal energy, baseline year (report MMBtu):
| MMBtu | |
| Stationary fuels used on-site to generate electricity and/or thermal energy | 1,326,074 MMBtu |
| Imported steam, hot water, and/or chilled water | 0 MMBtu |
Total site energy consumption, baseline year:
2,140,847.45
MMBtu
Baseline year building space
9,732,420
Gross square feet
Baseline period
| Start date | End date | |
| Baseline period | July 1, 2005 | June 30, 2008 |
A brief description of when and why the energy consumption baseline was adopted:
The University of California Sustainable Practices Policy requires each UC campus to select a three year average baseline to assess progress towards an annual 2% reduction in energy use intensity through energy efficiency efforts. The Davis campus energy usage has been decreasing since the year 2000 in spite of significant growth, so we have elected to use a three-year baseline from fiscal year 2005-06 through 2007-08 in order to better demonstrate as much as possible of the long story of energy efficiency and energy conservation efforts on campus over the past two decades.
Source energy
3
Total energy consumption per unit of floor area:
| Site energy | Source energy | |
| Performance year | 0.13 MMBtu per square foot | 0.22 MMBtu per square foot |
| Baseline year | 0.22 MMBtu per square foot | 0.39 MMBtu per square foot |
Metric used in scoring for Part 2
43.86
Optional Fields
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A brief description of the institution's initiatives to shift individual attitudes and practices in regard to energy efficiency:
The UC Davis Energy Conservation Office has created CEED (The Campus Energy Education Dashboard) for public use. It is an interactive map for the public to explore how much energy campus buildings are using in real time. For example, one can see what heats and cools buildings, and how energy use varies based on building type. The website program is constantly being updated; it and is currently on version 3.0, which allows users to look at building comparisons on EUI breakdowns, building rankings, outside air temperatures, and LEED Certification Highlights.
UC Davis buildings also have a TherMOOstat and TherMOOfan. The Energy Conservation Office built the TherMOOstat so that students, faculty and staff can let the energy conservation team know how they think the rooms feel on campus. It can be used for any building on the main campus, as often as any user likes. With the comfort feedback that is sent back to the team, it crowdsources indoor comfort and gives everyone the opportunity to contribute to comfort and energy savings. The TherMOOfan is another opportunity presented by the Energy Conservation Office to improve energy efficiency and campus comfort. To accomplish both in large classrooms, high volume, low-speed (HVLS) ceiling fans have been incorporated. HVLS fans can circulate a high volume of air throughout a large space efficiently, thus reducing the need for heating and cooling. The HVLS fan also provides comfort, as classrooms can maintain a more consistent temperature. To take a step further, the UC Davis Energy Conservation Office has added a code to the fans to turn off or on based on expected occupancy in the room, and to set a default speed in rooms when no votes are received (through TherMOOstat). The code also takes into account the outside air temperature, so when a student first walks into the classroom, the fans will operate at optimal speed.
The UC Davis Office of Sustainability offers a Green Workplace certification program that teaches participants how to green their actions and workspaces (offices, labs, and field work). Energy conservation and efficiency practices are part of this program. In addition, the Office of Sustainability offers the Aggie Green Pledge program, a personal sustainability take-action program that includes energy conservation and efficiency pledges.
CEED: https://facilities.ucdavis.edu/energy-engineering/ceed
TherMOOstat: https://facilities.ucdavis.edu/energy-engineering/controls-comfort.
Green Workplace: https://sustainability.ucdavis.edu/action/green_workplace/index.html
Aggie Green Pledge program: https://sustainability.ucdavis.edu/action/pledge/index.html
UC Davis buildings also have a TherMOOstat and TherMOOfan. The Energy Conservation Office built the TherMOOstat so that students, faculty and staff can let the energy conservation team know how they think the rooms feel on campus. It can be used for any building on the main campus, as often as any user likes. With the comfort feedback that is sent back to the team, it crowdsources indoor comfort and gives everyone the opportunity to contribute to comfort and energy savings. The TherMOOfan is another opportunity presented by the Energy Conservation Office to improve energy efficiency and campus comfort. To accomplish both in large classrooms, high volume, low-speed (HVLS) ceiling fans have been incorporated. HVLS fans can circulate a high volume of air throughout a large space efficiently, thus reducing the need for heating and cooling. The HVLS fan also provides comfort, as classrooms can maintain a more consistent temperature. To take a step further, the UC Davis Energy Conservation Office has added a code to the fans to turn off or on based on expected occupancy in the room, and to set a default speed in rooms when no votes are received (through TherMOOstat). The code also takes into account the outside air temperature, so when a student first walks into the classroom, the fans will operate at optimal speed.
The UC Davis Office of Sustainability offers a Green Workplace certification program that teaches participants how to green their actions and workspaces (offices, labs, and field work). Energy conservation and efficiency practices are part of this program. In addition, the Office of Sustainability offers the Aggie Green Pledge program, a personal sustainability take-action program that includes energy conservation and efficiency pledges.
CEED: https://facilities.ucdavis.edu/energy-engineering/ceed
TherMOOstat: https://facilities.ucdavis.edu/energy-engineering/controls-comfort.
Green Workplace: https://sustainability.ucdavis.edu/action/green_workplace/index.html
Aggie Green Pledge program: https://sustainability.ucdavis.edu/action/pledge/index.html
A brief description of energy use standards and controls employed by the institution:
To reduce the individual building energy usage, UC Davis has implemented the Active Commissioning Enterprise (ACE), a self-funding program that maximizes energy efficiency in existing buildings. Beginning in 2015 with Monitoring-Based Commissioning (MBCx) projects, ACE sought to reduce building energy consumption through systems improvement and upgrades. Past MBCx projects were done in Ghausi Hall, the Plant and Environmental Sciences Building, and Veterinary Medicine 3A Buildings. MBCx projects in the Peter J. Shields Library and the Genome and Biomedical Sciences Facility were completed in fiscal year 2019-20.
The Energy Conservation Office is also proactive in reducing energy waste on holidays. By leveraging the campus's complex digital building control system, our engineers implement new holiday schedules and temperature setpoints for building heating, ventilation, and air conditioning (HVAC) systems. For example, during the holidays, some buildings are left completely vacant, which means they don't need their temperatures controlled as tightly. Therefore, temperature settings in these buildings are relaxed significantly during the holidays. The relaxed temperature settings also prevent long warm-up or cool-down times after the holidays, meaning shorter times for a building to return to normal operations after the holidays.
For more information: https://facilities.ucdavis.edu/energy-engineering/projects
The Energy Conservation Office is also proactive in reducing energy waste on holidays. By leveraging the campus's complex digital building control system, our engineers implement new holiday schedules and temperature setpoints for building heating, ventilation, and air conditioning (HVAC) systems. For example, during the holidays, some buildings are left completely vacant, which means they don't need their temperatures controlled as tightly. Therefore, temperature settings in these buildings are relaxed significantly during the holidays. The relaxed temperature settings also prevent long warm-up or cool-down times after the holidays, meaning shorter times for a building to return to normal operations after the holidays.
For more information: https://facilities.ucdavis.edu/energy-engineering/projects
A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:
The Davis campus retrofitted parking structure, roadway, and pathway lighting fixtures to bi-level LED lamps; and retrofitted LED lighting and controls in 42 buildings (totaling 2.5 million square feet) under the UC Davis Smart Lighting Initiative. The campus has also retrofitted the Hutchison Intramural Field lighting with LED fixtures and reduced the fixture count from 192 HID lights to 96 LEDs which will use less than 1/3 of the power and provide better lighting with very low maintenance.
Hutchison Intramural Field Lighting article, “Lighting the Way for Intramural Sports”: https://facilities.ucdavis.edu/news/lighting-way-intramural-sports
Hutchison Intramural Field Lighting article, “Lighting the Way for Intramural Sports”: https://facilities.ucdavis.edu/news/lighting-way-intramural-sports
A brief description of passive solar heating, geothermal systems, and related strategies employed by the institution:
The Campus Design Guide, Part II Design Requirements calls for access to natural light and views, and the Physical Design Framework describes a variety of expected design strategies to reduce heat island effect, and use proper building orientation and window sizing and shading to minimize solar gain during the hot months and maximize solar gain during winter. The Davis campus has two buildings that use geothermal systems for heating and cooling, but the campus does not have a district-wide geothermal system.
Campus Design Guide: https://dcm.ucdavis.edu/2019-campus-design-guide
Physical Design Framework: https://campusplanning.ucdavis.edu/physical-design-framework
Campus Design Guide: https://dcm.ucdavis.edu/2019-campus-design-guide
Physical Design Framework: https://campusplanning.ucdavis.edu/physical-design-framework
A brief description of co-generation employed by the institution:
The Davis campus does not use co-generation.
A brief description of the institution's initiatives to replace energy-consuming appliances, equipment, and systems with high efficiency alternatives:
The Davis campus has undertaken many energy conservation and efficiency projects since 2007. Current projects that work to maximize energy efficiency on campus include: Active Commissioning Enterprise (ACE) Building Projects to reduce building energy consumption through systems improvement and upgrade, Holiday Shutdown Savings Project to be proactive in reducing energy waste on holidays via new implemented holiday schedules and temperature setpoints for building heating, ventilation, and air conditioning (HVAC) systems, Small Workplace Air and Remote Monitoring (SWARM) to include smaller buildings in efforts to increase energy efficiency campus-wide, and theECO Mode for Labs to ensure that UC Davis labs have lower ventilation rates, explicit signage indicating no hazardous materials or activities are allowed in the space, and hibernated fume hoods.
More detailed explanations of the listed projects, and other ongoing projects can be found here: https://facilities.ucdavis.edu/energy-engineering/projects.
More detailed explanations of the listed projects, and other ongoing projects can be found here: https://facilities.ucdavis.edu/energy-engineering/projects.
Website URL where information about the institution’s energy conservation and efficiency program is available:
Additional documentation to support the submission:
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Data source(s) and notes about the submission:
The values for baseline years are the average of each of the individual years 2005-06, 2006-07, 2007-08.
Please note that UC Davis does not import steam, hot water, and/or chilled water. The campus has its own district steam heating and chilled water systems.
Alex Berk, student employee at UCD Sustainability, assisted in compiling this credit response.
Please note that UC Davis does not import steam, hot water, and/or chilled water. The campus has its own district steam heating and chilled water systems.
Alex Berk, student employee at UCD Sustainability, assisted in compiling this credit response.
The information presented here is self-reported. While AASHE staff review portions of all STARS reports and institutions are welcome to seek additional forms of review, the data in STARS reports are not verified by AASHE. If you believe any of this information is erroneous or inconsistent with credit criteria, please review the process for inquiring about the information reported by an institution or simply email your inquiry to stars@aashe.org.