Overall Rating	Platinum
Overall Score	88.13
Liaison	Tonie Miyamoto
Submission Date	Nov. 7, 2022

STARS v2.2

Colorado State University
OP-5: Building Energy Efficiency

Status	Score	Responsible Party
	4.27 / 6.00	Carol Dollard Energy Engineer Facilities Management

"---" 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	169,585,845 Kilowatt-hours	578,626.90 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems)	503,822 Kilowatt-hours	1,719.04 MMBtu

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

	MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy	1,032,756 MMBtu
Imported steam, hot water, and/or chilled water	0 MMBtu

Total site energy consumption, performance year:

1,613,101.94 MMBtu

Performance year building space

Gross floor area of building space, performance year:

13,283,759 Gross square feet

Floor area of energy intensive space, performance year:

	Floor area
Laboratory space	2,260,788 Square feet
Healthcare space	609,678 Square feet
Other energy intensive space	589,082 Square feet

EUI-adjusted floor area, performance year:

19,613,773 Gross square feet

Performance year heating and cooling degree days

Degree days, performance year:

	Degree days
Heating degree days	5,643 Degree-Days (°F)
Cooling degree days	679 Degree-Days (°F)

Total degree days, performance year:

6,322 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, 2021	June 30, 2022

Metric used in scoring for Part 1

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

13.01 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	150,321,679 Kilowatt-hours	512,897.57 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems)	91,210 Kilowatt-hours	311.21 MMBtu

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

	MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy	1,161,759.70 MMBtu
Imported steam, hot water, and/or chilled water	0 MMBtu

Total site energy consumption, baseline year:

1,674,968.48 MMBtu

Baseline year building space

Gross floor area of building space, baseline year:

9,480,790 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, 2009	June 30, 2010

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

FY10 as a baseline year is consistent with CSU's Climate Action Plan baseline year when carbon neutrality goals were established.

Source energy

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	0.21 MMBtu per square foot
Baseline year	0.18 MMBtu per square foot	0.28 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:

26.79

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:

Colorado State University takes numerous approaches. The Campus Energy Coordinator works directly with faculty and staff on the academic half of campus to adopt and employ no-cost and low-cost energy conservation behaviors in their offices, units, departments, and buildings. Outreach may channel through the Building Proctor or through a motivated individual conservation champion. Several “green teams” or “sustainability committees” have formed at the building level through this process.

The Eco Leaders Peer Education Program coordinates the Eco Actions Campaign – an annual outreach and education program aimed at students on campus to pledge to adopt energy, water, transportation, and other conservation and sustainability related practices.

Within Facilities Management there is an Energy Team who annually prioritizes and implements key projects and opportunities to improve energy and water efficiency in our existing buildings. This cross-disciplinary team of Facilities professionals helps to raise awareness for the importance of energy and water efficiency improvements and actively works to deliver successful projects advancing energy and water efficiency.

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

CSU has a comprehensive Building Automation System (BAS). The system is a Johnson Controls Metasys system. The BAS has direct control over the HVAC equipment in nearly all campus buildings.

In addition, nearly all buildings have "smart meters" providing interval data to further understand electricity, water & natural gas consumption on a real time basis.

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

LED lighting is the standard for all new construction & replacements are continuing across all existing spaces.

A brief description of passive solar heating, geothermal systems, and related strategies employed by the institution:

In 2020, CSU installed one of the largest ground source heat pumps in the western US. This system utilizes 342 wells, 550 feet deep to exchange heat with the ground and efficiently provide heating and cooling to the Moby Complex (a 375,000 GSF mixed use athletic facility).

In commercial spaces in our climate, there are typically more cooling than heating loads. Therefore, when we employ passive solar techniques for our buildings, it is for daylighting, views, and connection to the outdoors rather than for space heating.

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:

Facilities Management manages the Energy Reserve Fund, a revolving fund that is used to finance energy & water efficiency projects on campus. This fund is used to implement $1 million/year in energy efficiency projects.

In addition, Housing & Dining Services has a Sustainability Fund that supports the price difference between standard and ENERGY STAR / high-performing appliances and equipment.

Website URL where information about the institution’s energy conservation and efficiency program is available:

https://www.fm.colostate.edu/energy

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.