Overall Rating	Gold - expired
Overall Score	65.15
Liaison	Amber Saxton
Submission Date	Jan. 8, 2021

STARS v2.2

George Mason University
OP-5: Building Energy Efficiency

Status	Score	Responsible Party
	4.43 / 6.00	Patrick Buchanan University Energy Manager Energy 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	100,239,337.12 Kilowatt-hours	342,016.62 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	421,452 MMBtu
Imported steam, hot water, and/or chilled water	0 MMBtu

Total site energy consumption, performance year:

763,468.62 MMBtu

Performance year building space

Gross floor area of building space, performance year:

821,389.98 Gross square meters

Floor area of energy intensive space, performance year:

	Floor area
Laboratory space	19,105.32 Square meters
Healthcare space	0 Square meters
Other energy intensive space	13,439.35 Square meters

EUI-adjusted floor area, performance year:

873,039.96 Gross square meters

Performance year heating and cooling degree days

Degree days, performance year:

	Degree days
Heating degree days	2,462.22 Degree-Days (°C)
Cooling degree days	805 Degree-Days (°C)

Total degree days, performance year:

3,267.22 Degree-Days (°C)

Performance period

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

	Start date	End date
Performance period	July 1, 2018	June 30, 2019

Metric used in scoring for Part 1

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

82.61 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	76,241,266.58 Kilowatt-hours	260,135.20 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	290,594 MMBtu
Imported steam, hot water, and/or chilled water	0 MMBtu

Total site energy consumption, baseline year:

550,729.20 MMBtu

Baseline year building space

Gross floor area of building space, baseline year:

425,359.54 Gross square meters

Baseline period

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

	Start date	End date
Baseline period	July 1, 2005	June 30, 2006

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

Mason's fiscal year runs from July 1st to June 30th of the following year in conjunction with its academic year. Fiscal year 2006 was chosen as a baseline since Mason signed the American College and University President's Climate Commitment in 2007.

Source energy

Source-site ratio for imported electricity:

3.14

Total energy consumption per unit of floor area:

	Site energy	Source energy
Performance year	0.93 MMBtu per square meter	1.82 MMBtu per square meter
Baseline year	1.29 MMBtu per square meter	2.60 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:

30.07

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:

Mason's Office of Energy Management holds an annual event to encourage all students, staff, and faculty on the Fairfax campus to power down their non-critical devices. The Lights out - Power down! event aims to reduce the university's power load by 2,000 kilowatt in one hour. In addition, Mason's Housing and Residence Life provides reminders to residents to turn off, set thermostats, and take shorter showers.

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

George Mason University has set temperatures for hot and cold weather and installed wall mounted and ceiling mounted occupancy and vacancy sensors throughout its campus, including seldom used areas such as restrooms, conference rooms, and stairways.

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

At George Mason University LED technology has been installed in the majority of the outdoor lighting systems on the Fairfax and Prince William Campuses. The lighting systems include road ways, parking lots, walkways and parking garage lighting systems.

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

In Exploratory Hall on Mason's Fairfax campus, daylight harvesting systems were used in the labs and the building uses a screen to evenly distribute light into the interior space to reduce heating and cooling needs and loads. Passive solar heating was also incorporated into the design of the new Health and Human Services building.

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:

Since FY05, Mason has initiated two Energy Performance Savings Contracts with Siemens Industry, Inc. totaling 16.7 million dollars. The 40 energy improvement measures yield 2.5 million dollars in savings annually. The Energy Management Department also used funds returned from the curtailment
program to complete a thermal blanket insulation project that will yield savings of 2.5 million dollars over a 15 year period and a payback of 13 months. The reduction of GHG emissions for all three projects is 20,505 metric tons of CO2 annually.

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

https://facilities.gmu.edu/services/energy-management/

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.