| Overall Rating | Gold |
|---|---|
| Overall Score | 75.90 |
| Liaison | Deborah Steinberg |
| Submission Date | Dec. 6, 2021 |
Carnegie Mellon University
OP-5: Building Energy Efficiency
| Status | Score | Responsible Party |
|---|---|---|
|
3.59 / 6.00 |
Steve
Guenther University Engineer and Assistant Vice President of Facilities Management and Campus Services Facilities Management Services |
Electricity use, performance year (report kilowatt-hours):
| kWh | MMBtu | |
| Imported electricity | 99,264,009 Kilowatt-hours | 338,688.80 MMBtu |
| Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) | 5,845.92 Kilowatt-hours | 19.95 MMBtu |
Stationary fuels and thermal energy, performance year (report MMBtu):
| MMBtu | |
| Stationary fuels used on-site to generate electricity and/or thermal energy | 67,778 MMBtu |
| Imported steam, hot water, and/or chilled water | 387,226 MMBtu |
Total site energy consumption, performance year:
Gross floor area of building space, performance year:
Floor area of energy intensive space, performance year:
| Floor area | |
| Laboratory space | 1,204,572 Square feet |
| Healthcare space | 46,051.80 Square feet |
| Other energy intensive space | 405,457.80 Square feet |
EUI-adjusted floor area, performance year:
Degree days, performance year:
| Degree days | |
| Heating degree days | 5,365 Degree-Days (°F) |
| Cooling degree days | 999 Degree-Days (°F) |
Total degree days, performance year:
Start and end dates of the performance year (or 3-year period):
| Start date | End date | |
| Performance period | July 1, 2020 | June 30, 2021 |
Total site energy consumption per unit of EUI-adjusted floor area per degree day, performance year:
Electricity use, baseline year (report kWh):
| kWh | MMBtu | |
| Imported electricity | 96,873,546 Kilowatt-hours | 330,532.54 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 | 45,055 MMBtu |
| Imported steam, hot water, and/or chilled water | 349,384 MMBtu |
Total site energy consumption, baseline year:
Gross floor area of building space, baseline year:
Start and end dates of the baseline year (or 3-year period):
| Start date | End date | |
| Baseline period | July 1, 2004 | June 30, 2005 |
A brief description of when and why the energy consumption baseline was adopted:
FY 2005 was selected to be consistent with earlier STARS reporting Baseline year. However, the building gross floor area was re-adjusted using performance year methodology. It should be noted that in 2018 CMU revised its approach to calculating square footage. Historically, CMU included in its square footage rented floor area for which we paid utility bills. We also used to calculate square footage using the the area the federal government calls “Net Usable Area." In an effort to standardize our approach to square footage reporting for various campus reports, we now include only the floor area of the buildings we own. We also have shifted to a gross square footage approach,(similar for USGBC and for AASHE).
Source-site ratio for imported electricity:
Total energy consumption per unit of floor area:
| Site energy | Source energy | |
| Performance year | 0.12 MMBtu per square foot | 0.22 MMBtu per square foot |
| Baseline year | 0.13 MMBtu per square foot | 0.26 MMBtu per square foot |
Percentage reduction in total source energy consumption per unit of floor area from baseline:
Documentation to support the performance year energy consumption figures reported above:
A brief description of the institution's initiatives to shift individual attitudes and practices in regard to energy efficiency:
A brief description of energy use standards and controls employed by the institution:
Building Temperatures are determined so as to meet occupant requirements for asset preservation, experimental requirements and personal productivity. Occupancy sensors are used fairly broadly across the university to control lighting and to control ventilation rates in newer construction.
A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:
100% of new or replacement lighting installations are LED.
A brief description of passive solar heating, geothermal systems, and related strategies employed by the institution:
A brief description of co-generation employed by the institution:
Carnegie Mellon University does not currently deploy any co-generation technologies. However, cogeneration is being actively studied for potential installation in 2022-23.
A brief description of the institution's initiatives to replace energy-consuming appliances, equipment, and systems with high efficiency alternatives:
Website URL where information about the institution’s energy conservation and efficiency program is available:
Additional documentation to support the submission:
Data source(s) and notes about the submission:
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.