| Overall Rating | Silver |
|---|---|
| Overall Score | 55.03 |
| Liaison | Sara McIntyre |
| Submission Date | Aug. 10, 2022 |
Sewanee - The University of the South
OP-5: Building Energy Efficiency
| Status | Score | Responsible Party |
|---|---|---|
|
3.88 / 6.00 |
Sara
McIntyre Sustainability Coordinator OESS |
"---"
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 | 13,529,100 Kilowatt-hours | 46,161.29 MMBtu |
| Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) | 0 Kilowatt-hours | 0 MMBtu |
Stationary fuels and thermal energy, performance year (report MMBtu):
| MMBtu | |
| Stationary fuels used on-site to generate electricity and/or thermal energy | 51,840 MMBtu |
| Imported steam, hot water, and/or chilled water | 0 MMBtu |
Total site energy consumption, performance year:
98,001.29
MMBtu
Performance year building space
1,491,195
Gross square feet
Floor area of energy intensive space, performance year:
| Floor area | |
| Laboratory space | 28,341 Square feet |
| Healthcare space | 0 Square feet |
| Other energy intensive space | 49,080 Square feet |
EUI-adjusted floor area, performance year:
1,596,957
Gross square feet
Performance year heating and cooling degree days
| Degree days | |
| Heating degree days | 3,565 Degree-Days (°F) |
| Cooling degree days | 1,428 Degree-Days (°F) |
Total degree days, performance year:
4,993
Degree-Days (°F)
Performance period
| Start date | End date | |
| Performance period | Jan. 1, 2019 | Dec. 31, 2019 |
Metric used in scoring for Part 1
12.29
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 | 14,109,613 Kilowatt-hours | 48,142.00 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 | 74,082 MMBtu |
| Imported steam, hot water, and/or chilled water | 0 MMBtu |
Total site energy consumption, baseline year:
122,224.00
MMBtu
Baseline year building space
1,377,194
Gross square feet
Baseline period
| Start date | End date | |
| Baseline period | Jan. 1, 2013 | Dec. 31, 2013 |
A brief description of when and why the energy consumption baseline was adopted:
Sewanee has joined the Department of Energy's Better Building Challenge in 2016 and 2013 was the base year that is being used for that challenge. Utilization of the EPA Portfolio Manager tool is required for this participation and is the data source for the above submission.
Source energy
3
Total energy consumption per unit of floor area:
| Site energy | Source energy | |
| Performance year | 0.07 MMBtu per square foot | 0.13 MMBtu per square foot |
| Baseline year | 0.09 MMBtu per square foot | 0.16 MMBtu per square foot |
Metric used in scoring for Part 2
19.56
Optional Fields
A brief description of the institution's initiatives to shift individual attitudes and practices in regard to energy efficiency:
Beginning in 2015, the University created the position of Energy Specialist in the Facilities Management division working on energy management issues exclusively. One vital task the Energy Specialist addresses is HVAC scheduling to match space occupancy, and nighttime, weekend and holiday setback schedules. Other objectives of this position are data analysis and monitoring of utility consumption, measuring and verifying of energy conservation measures completed, occupant education on thermal comfort features and expectations and championing energy conservation efforts on all scales; assessing cost effectiveness, technical feasibility, impact and acceptance.
A brief description of energy use standards and controls employed by the institution:
Sewanee has had a thermal comfort policy in place since 2013. A unique schedule is determined for each building which defines occupied and unoccupied times with the intent to minimize the occupied periods.
The goals of thermal comfort policy are to be in the range of 68-71 degrees for winter occupied temperatures and 74-77 degrees for summer occupied temperatures.
For all buildings on the Building Automation System, the unoccupied set points are 80º F for cooling and 55º F for heating.
For all buildings on the Building Automation System, the unoccupied set points are 85º F for cooling and 55º F for heating.
The goals of thermal comfort policy are to be in the range of 68-71 degrees for winter occupied temperatures and 74-77 degrees for summer occupied temperatures.
For all buildings on the Building Automation System, the unoccupied set points are 80º F for cooling and 55º F for heating.
For all buildings on the Building Automation System, the unoccupied set points are 85º F for cooling and 55º F for heating.
A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:
Sewanee, while not having completed a wholesale conversion to LED lighting, approaches projects as they become feasible and logical in the remodeling of space and in new construction. Late in 2017 an upgrade of 1965 lighting controls in the duPont Library was completed employing digital controls with a WattStopper product, which was implemented in two additional buildings in year 2020. In addition, LED lighting provides significant labor savings as the maintenance is much lower.
A brief description of passive solar heating, geothermal systems, and related strategies employed by the institution:
NA
A brief description of co-generation employed by the institution:
NA
A brief description of the institution's initiatives to replace energy-consuming appliances, equipment, and systems with high efficiency alternatives:
With the Campus Infrastrucure Renewal Program, deferred maintenance projects were addressed, many which had an energy-consuming focus and an energy savings outcome. These included roof repairs, building envelope upgrades, HVAC upgrades including the addition of several efficient condensing boilers. The Wellness Commons, completed in 2020, was connected to the central chilled water plant, joining a network of 65% of central campus buildings.
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:
Based on information and tracking data of our Energy Specialist. Data is also housed on the EPA portfolio star manager.
There is a discrepancy in the total floor area between this credit and PRE-4. The total area used in PRE-4 (and in OP-4) is the total floor area in use in December of 2021 - which is after several new buildings were built and came on line. It is also after a major renovation (Carnegie Hall) came back online after being offline for a long while. The floor area used here is based on the calendar year of 2019 - because that matches the reporting time window used in this question. In other areas the floor area matches our fiscal year that includes 2019 and the square footage is different because of the buildings that came offline for construction or renovation (or flea treatment, etc) and those that were online or opened during that time.
There is a discrepancy in the total floor area between this credit and PRE-4. The total area used in PRE-4 (and in OP-4) is the total floor area in use in December of 2021 - which is after several new buildings were built and came on line. It is also after a major renovation (Carnegie Hall) came back online after being offline for a long while. The floor area used here is based on the calendar year of 2019 - because that matches the reporting time window used in this question. In other areas the floor area matches our fiscal year that includes 2019 and the square footage is different because of the buildings that came offline for construction or renovation (or flea treatment, etc) and those that were online or opened during that time.
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.