Overall Rating	Silver
Overall Score	54.69
Liaison	Trevor Ledbetter
Submission Date	Jan. 6, 2025

STARS v2.2

University of Arizona
OP-5: Building Energy Efficiency

Status	Score	Responsible Party
	3.05 / 6.00	Trevor Ledbetter Director Office of Sustainability

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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	146,271,847 Kilowatt-hours	499,079.54 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems)	2,911,067 Kilowatt-hours	9,932.56 MMBtu

Stationary fuels and thermal energy, performance year (report MMBtu):

	MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy	1,489,932 MMBtu
Imported steam, hot water, and/or chilled water	0 MMBtu

Total site energy consumption, performance year:

1,998,944.10 MMBtu

Performance year building space

Gross floor area of building space, performance year:

13,181,505 Gross square feet

Floor area of energy intensive space, performance year:

	Floor area
Laboratory space	3,273,551 Square feet
Healthcare space	87,874 Square feet
Other energy intensive space	469,706 Square feet

EUI-adjusted floor area, performance year:

20,374,061 Gross square feet

Performance year heating and cooling degree days

Degree days, performance year:

	Degree days
Heating degree days	2,205.10 Degree-Days (°F)
Cooling degree days	6,944.80 Degree-Days (°F)

Total degree days, performance year:

9,149.90 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, 2022	June 30, 2023

Metric used in scoring for Part 1

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

10.72 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	131,300,284 Kilowatt-hours	447,996.57 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems)	3,192,189 Kilowatt-hours	10,891.75 MMBtu

Stationary fuels and thermal energy, baseline year (report MMBtu):

	MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy	1,511,119 MMBtu
Imported steam, hot water, and/or chilled water	0 MMBtu

Total site energy consumption, baseline year:

1,970,007.32 MMBtu

Baseline year building space

Gross floor area of building space, baseline year:

12,052,075 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, 2019	June 30, 2020

A brief description of when and why the energy consumption baseline was adopted:

This baseline was used because it is the first year of the reporting period.

Source energy

Source-site ratio for imported electricity:

Total energy consumption per unit of floor area:

	Site energy	Source energy
Performance year	0.15 MMBtu per square foot	0.23 MMBtu per square foot
Baseline year	0.16 MMBtu per square foot	0.24 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:

4.39

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:

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A brief description of energy use standards and controls employed by the institution:

University conforms all new construction and retrofits to the 2018 International Codes, which reference ASHRAE 90.1 for energy efficiency standards. New construction also must conform to Silver level certification under LEED for New Construction, which also references 90.1. The university is in the midst of a multi-year project to upgrade building automation systems across campus for major equipment to state-of-the-art BacNet based digital controls.

A brief description of Light Emitting Diode (LED) lighting and other energy-efficient lighting strategies employed by the institution:

All exterior lighting, including wall packs and pole lighting, have already been converted to LED. The University Facilities Management department as adopted an LED-only policy for interior relamping, with an ongoing program of updating interior lighting to LED flat panel fixtures with dimmable and schedulable controls and occupancy sensing.

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:

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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.