| Overall Rating | Gold - expired |
|---|---|
| Overall Score | 68.49 |
| Liaison | Ryan Todd |
| Submission Date | March 1, 2021 |
California State University, Sacramento
OP-5: Building Energy Efficiency
| Status | Score | Responsible Party |
|---|---|---|
|
3.80 / 6.00 |
"---"
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 | 41,216,301 Kilowatt-hours | 140,630.02 MMBtu |
| Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) | 861,580 Kilowatt-hours | 2,939.71 MMBtu |
Stationary fuels and thermal energy, performance year (report MMBtu):
| MMBtu | |
| Stationary fuels used on-site to generate electricity and/or thermal energy | 122,446 MMBtu |
| Imported steam, hot water, and/or chilled water | 0 MMBtu |
Total site energy consumption, performance year:
266,015.73
MMBtu
Performance year building space
6,059,245
Gross square feet
Floor area of energy intensive space, performance year:
| Floor area | |
| Laboratory space | 279,805 Square feet |
| Healthcare space | 210,645 Square feet |
| Other energy intensive space | 877,934 Square feet |
EUI-adjusted floor area, performance year:
7,918,079
Gross square feet
Performance year heating and cooling degree days
| Degree days | |
| Heating degree days | 2,367 Degree-Days (°F) |
| Cooling degree days | 1,268 Degree-Days (°F) |
Total degree days, performance year:
3,635
Degree-Days (°F)
Performance period
| Start date | End date | |
| Performance period | July 1, 2018 | June 30, 2019 |
Metric used in scoring for Part 1
9.24
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 | 43,081,246.83 Kilowatt-hours | 146,993.21 MMBtu |
| Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) | 800,350 Kilowatt-hours | 2,730.79 MMBtu |
Stationary fuels and thermal energy, baseline year (report MMBtu):
| MMBtu | |
| Stationary fuels used on-site to generate electricity and/or thermal energy | 110,087 MMBtu |
| Imported steam, hot water, and/or chilled water | 0 MMBtu |
Total site energy consumption, baseline year:
259,811.01
MMBtu
Baseline year building space
5,166,951
Gross square feet
Baseline period
| Start date | End date | |
| Baseline period | Aug. 1, 2013 | July 31, 2014 |
A brief description of when and why the energy consumption baseline was adopted:
The performance year was chosen based on the most recent 12 month period prior to starting work on the STARS report. The baseline year was determined by choosing the 12 month period prior to completing the first STARS assessment.
Source energy
3
Total energy consumption per unit of floor area:
| Site energy | Source energy | |
| Performance year | 0.04 MMBtu per square foot | 0.09 MMBtu per square foot |
| Baseline year | 0.05 MMBtu per square foot | 0.11 MMBtu per square foot |
Metric used in scoring for Part 2
15.73
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:
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A brief description of energy use standards and controls employed by the institution:
Facilities Management takes the following steps to efficiently utilize natural gas and electricity to meet the heating and cooling needs of the campus:
• Interior building temperatures will be maintained at 68 degrees F in the winter and 78 degrees F in the summer.
• Domestic hot water temperatures will not be set above 115 degrees F.
• All air conditioning equipment and fans will be shut off on weekends, holidays, and nightly, wherever appropriate.
• During working hours, ventilation will be maintained to meet health and safety standards.
• Windows and doors should remain closed at all times to prevent loss of conditioned air. It is impossible to maintain controlled conditions if windows are open in offices or classrooms.
• Heat generating equipment and large items of furniture, such as bookshelves or cabinets, should not be set in front of thermostats to prevent false temperature readings and cause over-cooling or under-heating.
• Use of portable electric heaters and fans is not allowed unless authorized by the campus Energy Coordinator. Approval is dependent upon medical need or failure of the building heating and ventilating systems.
• Interior building temperatures will be maintained at 68 degrees F in the winter and 78 degrees F in the summer.
• Domestic hot water temperatures will not be set above 115 degrees F.
• All air conditioning equipment and fans will be shut off on weekends, holidays, and nightly, wherever appropriate.
• During working hours, ventilation will be maintained to meet health and safety standards.
• Windows and doors should remain closed at all times to prevent loss of conditioned air. It is impossible to maintain controlled conditions if windows are open in offices or classrooms.
• Heat generating equipment and large items of furniture, such as bookshelves or cabinets, should not be set in front of thermostats to prevent false temperature readings and cause over-cooling or under-heating.
• Use of portable electric heaters and fans is not allowed unless authorized by the campus Energy Coordinator. Approval is dependent upon medical need or failure of the building heating and ventilating systems.
A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:
LED Street Lighting Project:
Sac State has replaced all the old High Pressure Sodium cobra head street lighting fixtures with energy efficient LED street lights. The project has resulted in 54% energy savings, reduced maintenance costs, and better lighting quality, color, and improved security.
Gym LED Lighting Retrofit:
Sac State replaced 30 existing High Pressure Sodium lights in Yosemite Hall’s North Gym with 20 LED lamps with individual occupancy sensors that resulted in 73% energy savings, reduced maintenance cost due to longer lamp life, and better lighting quality and color.
The campus conducted a LED lighting retrofit in Mendocino Hall which reduced lighting consumption by 85% and has an estimated energy savings of $22,247 a year.
Sac State has replaced all the old High Pressure Sodium cobra head street lighting fixtures with energy efficient LED street lights. The project has resulted in 54% energy savings, reduced maintenance costs, and better lighting quality, color, and improved security.
Gym LED Lighting Retrofit:
Sac State replaced 30 existing High Pressure Sodium lights in Yosemite Hall’s North Gym with 20 LED lamps with individual occupancy sensors that resulted in 73% energy savings, reduced maintenance cost due to longer lamp life, and better lighting quality and color.
The campus conducted a LED lighting retrofit in Mendocino Hall which reduced lighting consumption by 85% and has an estimated energy savings of $22,247 a year.
A brief description of passive solar heating, geothermal systems, and related strategies employed by the institution:
N/A
A brief description of co-generation employed by the institution:
N/A
A brief description of the institution's initiatives to replace energy-consuming appliances, equipment, and systems with high efficiency alternatives:
The water energy savings grant project funded by the Department of Water Resources (DWR), facilitated the replacement of countless commercial and residential grade appliances throughout campus with energy star certified appliances.
Website URL where information about the institution’s energy conservation and efficiency program is available:
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Additional documentation to support the submission:
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Data source(s) and notes about the submission:
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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.