Overall Rating Silver
Overall Score 53.94
Liaison DeLayne Miller
Submission Date Dec. 15, 2022

STARS v2.2

Tennessee Technological University
OP-5: Building Energy Efficiency

Status Score Responsible Party
Complete 2.58 / 6.00 DeLayne Miller
Sustainability Manager
Facilities: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

Electricity use, performance year (report kilowatt-hours):
kWh MMBtu
Imported electricity 47,330,835.77 Kilowatt-hours 161,492.81 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 289,085.58 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, performance year:
450,578.39 MMBtu

Performance year building space

Gross floor area of building space, performance year:
3,373,556 Gross square feet

Floor area of energy intensive space, performance year:
Floor area
Laboratory space 1,006,736 Square feet
Healthcare space 0 Square feet
Other energy intensive space 83,924 Square feet

EUI-adjusted floor area, performance year:
5,470,952 Gross square feet

Performance year heating and cooling degree days 

Degree days, performance year:
Degree days
Heating degree days 4,029.30 Degree-Days (°F)
Cooling degree days 1,607.40 Degree-Days (°F)

Total degree days, performance year:
5,636.70 Degree-Days (°F)

Performance period

Start and end dates of the performance year (or 3-year period):
Start date End date
Performance period July 1, 2020 June 30, 2021

Metric used in scoring for Part 1

Total site energy consumption per unit of EUI-adjusted floor area per degree day, performance year:
14.61 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.

Electricity use, baseline year (report kWh):
kWh MMBtu
Imported electricity 41,059,718 Kilowatt-hours 140,095.76 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 206,440.63 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, baseline year:
346,536.39 MMBtu

Baseline year building space

Gross floor area of building space, baseline year:
3,040,356 Gross square feet

Baseline period

Start and end dates of the baseline year (or 3-year period):
Start date End date
Baseline period July 1, 2011 June 30, 2012

A brief description of when and why the energy consumption baseline was adopted:
The baseline of FY12 was adopted because this is the earliest there is complete utility data that is not archived and this was prior to the campus' Central Steam Plant Upgrade which replaced the coal-fire boiler with gas-fired.

Source energy

Source-site ratio for imported electricity:
3.14

Total energy consumption per unit of floor area:
Site energy Source energy
Performance year 0.13 MMBtu per square foot 0.24 MMBtu per square foot
Baseline year 0.11 MMBtu per square foot 0.21 MMBtu per square foot

Metric used in scoring for Part 2

Percentage reduction in total source energy consumption per unit of floor area from baseline:
0

Optional Fields 

Documentation to support the performance year energy consumption figures reported above:
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A brief description of the institution's initiatives to shift individual attitudes and practices in regard to energy efficiency:
Tennessee Tech offers personal Energy Efficiency Training.
https://www.tntech.edu/engineering/research/cmr/outreach/tennessee-3-star-industrial-assessment-center/energy-efficiency-training

A brief description of energy use standards and controls employed by the institution:
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A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:
As a construction standard, TN Tech continues to install, & upgrade to, LED lighting across campus in both full-building renovation projects, single room renovations and in exterior walkway and parking lot lighting.

A brief description of passive solar heating, geothermal systems, and related strategies employed by the institution:
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A brief description of co-generation employed by the institution:
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A brief description of the institution's initiatives to replace energy-consuming appliances, equipment, and systems with high efficiency alternatives:
Being a state university, TN Tech must follow the State of Tennessee's High Performance Building Requirements for all renovations and new construction. The following is from this manual:
"EE2. Energy Efficient Purchasing Policy
EE2.1 Energy Star qualified appliances and equipment: In accordance with Tennessee Code Annotated section 12-3-905, purchase and install Energy Star qualified equipment for all Energy Star eligible equipment types including appliances, office equipment, electronics, and commercial food service
equipment."

TN Tech has installed workout equipment made by SportsArt, to harness the energy produced during workouts. Seven ellipticals, four recumbent bikes, and four upright bikes and treadmills have been added to our fitness center to feed directly back into the buildings power supply. This equipment will be moved into the new Fitness Center upon completion Spring 2020.

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:
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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.