Overall Rating Silver
Overall Score 52.54
Liaison Becky Haney
Submission Date Feb. 26, 2020

STARS v2.2

Calvin University
OP-5: Building Energy Efficiency

Status Score Responsible Party
Complete 3.17 / 6.00 Russell Bray
Director of Physical Plant
Physical Plant
"---" indicates that no data was submitted for this field

Electricity use, performance year (report kilowatt-hours):
kWh MMBtu
Imported electricity 21,959,974 Kilowatt-hours 74,927.43 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) 11,654.80 Kilowatt-hours 39.77 MMBtu

Stationary fuels and thermal energy, performance year (report MMBtu):
MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy 180,935 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, performance year:
255,902.20 MMBtu

Gross floor area of building space, performance year:
2,210,347 Gross Square Feet

Floor area of energy intensive space, performance year:
Floor area
Laboratory space 57,530 Square Feet
Healthcare space 3,452 Square Feet
Other energy intensive space 85,557 Square Feet

EUI-adjusted floor area, performance year:
2,417,868 Gross Square Feet

Degree days, performance year:
Degree days
Heating degree days 6,896.40 Degree-Days (°F)
Cooling degree days 924.40 Degree-Days (°F)

Total degree days, performance year:
7,820.80 Degree-Days (°F)

Start and end dates of the performance year (or 3-year period):
Start date End date
Performance period July 1, 2018 June 30, 2019

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

Electricity use, baseline year (report kWh):
kWh MMBtu
Imported electricity 25,073,310 Kilowatt-hours 85,550.13 MMBtu
Electricity from on-site, non-combustion facilities/devices (e.g., renewable energy systems) 15,382.70 Kilowatt-hours 52.49 MMBtu

Stationary fuels and thermal energy, baseline year (report MMBtu):
MMBtu
Stationary fuels used on-site to generate electricity and/or thermal energy 188,277 MMBtu
Imported steam, hot water, and/or chilled water 0 MMBtu

Total site energy consumption, baseline year:
273,879.62 MMBtu

Gross floor area of building space, baseline year:
2,210,347 Gross Square Feet

Start and end dates of the baseline year (or 3-year period):
Start date End date
Baseline period Jan. 1, 2009 Dec. 31, 2009

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

The baseline year was chosen as it was after any major renovations and building construction. The baseline year is recent enough to capture reliable data from the past and use that to see how much progress we have made with sustainability efforts.

The 2009 (baseline) stationary fuels used on site (188,277MMbtu) was indicated as being in the records. (per Jack Philips' email, 3.18.20). - BRH


Source-site ratio for imported electricity:
3

Total energy consumption per unit of floor area:
Site energy Source energy
Performance year 0.12 MMBtu / GSF 0.18 MMBtu / GSF
Baseline year 0.12 MMBtu / GSF 0.20 MMBtu / GSF

Percentage reduction in total source energy consumption per unit of floor area from baseline:
8.81

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:

See Kill-a-Watt in credit EN-1.


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

Most areas are heated to 70 degrees F and cooled to 72 degrees F.

(10.25.18) : HDD and CDD were calculated using for FY 2017-18: https://portfoliomanager.energystar.gov/pm/degreeDaysCalculator
which uses the base of 65 degrees-F as stated for Part 2.


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

The campus is trying to convert more and more spaces to LED. Many large spaces and spaces with daily usage have already been converted to LED lighting. About 1/3 of street lights have been converted to LED. See more information about CERF at https://calvin.edu/support/energy/


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:

Any building remodeling projects would be looked at as a way to evaluate the current energy consumption items and challenge if there are better alternatives available.


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

Additional documentation to support the submission:
---

The grid purchased electricity comes from 21,000,000+ kWh for Calvin's main bill and ~1,500,000 kWh for the remaining properties in the institutional boundary.
Conversion from kWh to MMBtu was performed with information from the U.S. Energy Information Administration (eia): https://www.eia.gov/energyexplained/index.php?page=about_energy_conversion_calculator
Solar panel power (on-site renewable) comes from Chuck Holwerda.
(JW 1.22.19)

For the performance year energy consumption I placed our imported electricity, steam, and chilled water under electricity because it is all sourced from electricity and we don't have it separated it out. (KM 1.18.20)

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 and complete the Data Inquiry Form.