Overall Rating Gold
Overall Score 81.87
Liaison Rania Assariotaki
Submission Date Feb. 21, 2023

STARS v2.2

The American College of Greece
OP-5: Building Energy Efficiency

Status Score Responsible Party
Complete 5.71 / 6.00 Ourania Assariotaki
Sustainability Manager
Office of Public Affairs
"---" indicates that no data was submitted for this field

Electricity use, performance year (report kilowatt-hours):
kWh MMBtu
Imported electricity 3,946,576 Kilowatt-hours 13,465.72 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 12,816.30 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, performance year:
26,282.02 MMBtu

Gross floor area of building space, performance year:
59,617.60 Gross square meters

Floor area of energy intensive space, performance year:
Floor area
Laboratory space 1,907.21 Square meters
Healthcare space 74 Square meters
Other energy intensive space 12,332 Square meters

EUI-adjusted floor area, performance year:
75,912.02 Gross square meters

Degree days, performance year:
Degree days
Heating degree days 1,214.70 Degree-Days (°C)
Cooling degree days 1,141.30 Degree-Days (°C)

Total degree days, performance year:
2,356 Degree-Days (°C)

Start and end dates of the performance year (or 3-year period):
Start date End date
Performance period Jan. 1, 2021 Dec. 31, 2021

Total site energy consumption per unit of EUI-adjusted floor area per degree day, performance year:
146.95 Btu / GSM / Degree-Day (°C)

Electricity use, baseline year (report kWh):
kWh MMBtu
Imported electricity 5,247,389 Kilowatt-hours 17,904.09 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 13,011.50 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, baseline year:
30,915.59 MMBtu

Gross floor area of building space, baseline year:
39,510.72 Gross square meters

Start and end dates of the baseline year (or 3-year period):
Start date End date
Baseline period Jan. 1, 2019 Dec. 31, 2019

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

most recent, representative year used from now on in Energy Management System


Source-site ratio for imported electricity:
2

Total energy consumption per unit of floor area:
Site energy Source energy
Performance year 0.44 MMBtu per square meter 0.44 MMBtu per square meter
Baseline year 0.78 MMBtu per square meter 0.78 MMBtu per square meter

Percentage reduction in total source energy consumption per unit of floor area from baseline:
46.04

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:

Continuing the Energy Saving Awareness Campaign from November 2019, which consist of:
• Notifications for energy efficiency tips on air conditioning equipment usage by new employee orientation booklets, posted messages around the spaces, announcements, acg blackboard and site.
• Collaboration with the IT department for implementing good practices on pc usage.
• Collaboration with a/c maintenance contractor and technical team to shape a note of succinctly stated instructions for a/c equipment proper operation in terms of energy saving and comfort conditions.


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

Energy use standards & controls employed by ACG :
• Energy Management System Certified according to ISO50001 standard, in July 2020
• Notifying the acg community for the appropriate temperature for all spaces during summer or winter conditions, according to the applicable T.E.E. directives Τ.Ο.Τ.Ε.Ε.2423/86.
• Controlling temperature through BMS in approx..80% of acg spaces.
• Implementing restriction policy on a/c operation for the middle season period according to T.E.E. directives Τ.Ο.Τ.Ε.Ε.2423/86


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

Use of led technology lights for all cases on spaces renovation, or new construction, or replacement of burned lights in existing rooms.
2019-2021 replacing light fixtures with led technology saving 100Mwh/year


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:

In years 2020-2021 projects were undertaken at campus for upgrading and insulation of:
- air conditioning external piping and ducts
- natural gas heating pipes
- the classrooms openings and walls
Gym equipped with air purification devices (by Airius) which contribute to energy consumption reduction
All the spaces renovation projects include replacement of energy consuming equipment (heating & cooling system, lights, pc etc) with high efficiency alternatives and replacement of natural gas and fossil fuel with electricity


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.