Overall Rating	Silver
Overall Score	53.49
Liaison	Julia Angstmann
Submission Date	Dec. 20, 2021

STARS v2.2

Butler University
OP-5: Building Energy Efficiency

Status	Score	Responsible Party
	4.66 / 6.00	Taylor Korn Campus Engineer University Operations

"---" 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	31,947,000 Kilowatt-hours	109,003.16 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	119,362 MMBtu
Imported steam, hot water, and/or chilled water	0 MMBtu

Total site energy consumption, performance year:

228,365.16 MMBtu

Performance year building space

Gross floor area of building space, performance year:

289,996.71 Gross square meters

Floor area of energy intensive space, performance year:

	Floor area
Laboratory space	6,541.21 Square meters
Healthcare space	0 Square meters
Other energy intensive space	9,004.81 Square meters

EUI-adjusted floor area, performance year:

312,083.94 Gross square meters

Performance year heating and cooling degree days

Degree days, performance year:

	Degree days
Heating degree days	2,927.22 Degree-Days (°C)
Cooling degree days	723.89 Degree-Days (°C)

Total degree days, performance year:

3,651.11 Degree-Days (°C)

Performance period

Start and end dates of the performance year (or 3-year period):

	Start date	End date
Performance period	June 1, 2020	May 31, 2021

Metric used in scoring for Part 1

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

61.86 Btu / GSM / Degree-Day (°C)

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	32,071,637 Kilowatt-hours	109,428.43 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	104,272 MMBtu
Imported steam, hot water, and/or chilled water	0 MMBtu

Total site energy consumption, baseline year:

213,700.43 MMBtu

Baseline year building space

Gross floor area of building space, baseline year:

194,120.91 Gross square meters

Baseline period

Start and end dates of the baseline year (or 3-year period):

	Start date	End date
Baseline period	June 1, 2015	May 31, 2016

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

This was the most recent data available.

Source energy

Source-site ratio for imported electricity:

Total energy consumption per unit of floor area:

	Site energy	Source energy
Performance year	0.79 MMBtu per square meter	1.54 MMBtu per square meter
Baseline year	1.10 MMBtu per square meter	2.23 MMBtu per square meter

Metric used in scoring for Part 2

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

30.92

Optional Fields

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:

Butler has a Green Office program where individuals can learn how to reduce energy consumption.

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

The University has implemented energy efficiency and conservation standards for new construction and major renovation on campus.
Campus setpoints are to maintain 70 +/- 2 degrees with occupant control allowed for an additional +/- 2 degrees range.
The University has began to classify facilities as non-essential and essential buildings, and setback HVAC systems at non-essential facilities at pre-determined appropriate times of day/year.
All new construction and major renovations shall be LEED Silver certified.

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

All new light fixtures on campus must be LED, unless specified exception has been granted approval. Vacancy sensors are a campus standard for all classrooms and offices (new construction or renovation or lighting retrofit project). Common areas such as bathrooms, hallways are to use occupancy sensors.

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

N/A

A brief description of co-generation employed by the institution:

N/A

A brief description of the institution's initiatives to replace energy-consuming appliances, equipment, and systems with high efficiency alternatives:

Campus standard for kitchen appliances to be rated Energy Star or equivalent in operation.
Existing HVAC systems, when due for replacement, are considered as wholistic system and shall be upgraded to most energy efficient operation and control strategies.
New HVAC systems for new construction must meet or exceed ASHRAE 90.1 design standards which includes optimal control strategies and efficiency ratings.

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:

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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.