Overall Rating Silver - expired
Overall Score 59.34
Liaison Elizabeth MacKenzie
Submission Date July 24, 2018
Executive Letter Download

STARS v2.1

University of Iowa
OP-6: Clean and Renewable Energy

Status Score Responsible Party
Complete 0.78 / 4.00 George Paterson
Energy Control Center Manager
Facilities Management
"---" indicates that no data was submitted for this field

Total energy consumption (all sources, excluding transportation fuels), performance year :
3,383,309 MMBtu

Total clean and renewable electricity generated on site during the performance year and for which the institution retains or has retired the associated environmental attributes:
1,114.70 MMBtu

A brief description of on-site renewable electricity generating devices :

The University of Iowa has operated a combined heat and power plant since 1926. The University of Iowa uses traditional feedstock and biomass to generate steam for cost-effective electricity, cooling and water treatment on campus. In 2003, the UI Power Plant pioneered a unique and innovative source of fuel, oat hulls, through a partnership with Quaker Oats in Cedar Rapids, Iowa. Oat hulls provide an economical, environmentally friendly source of fuel. The hulls are a by-product of the cereal-making process at Quaker. They are trucked to the Power Plant and co-fired with coal in the circulating fluidized bed (CFB) boiler. The biomass fuel project supports the 2020 Sustainability Vision - Task 2. The task requires the UI to green its energy portfolio and achieve 40% renewable energy by 2020. Replacing coal with biomass is a central strategy. A variety of biomass fuel sources are being investigated including wood chips, miscanthus grass, timber stand, and organic industrial byproducts.

Additionally, there are rooftop solar panels on some campus buildings.


Non-electric renewable energy generated on-site, performance year:
654,527 MMBtu

A brief description of on-site renewable non-electric energy devices:

The University of Iowa has operated a combined heat and power plant since 1926. The University of Iowa uses traditional feedstock and biomass to generate steam for cost-effective electricity, cooling and water treatment on campus. In 2003, the UI Power Plant pioneered a unique and innovative source of fuel, oat hulls, through a partnership with Quaker Oats in Cedar Rapids, Iowa. Oat hulls provide an economical, environmentally friendly source of fuel. The hulls are a by-product of the cereal-making process at Quaker. They are trucked to the Power Plant and co-fired with coal in the circulating fluidized bed (CFB) boiler. The biomass fuel project supports the 2020 Sustainability Vision - Task 2. The task requires the UI to green its energy portfolio and achieve 40% renewable energy by 2020. Replacing coal with biomass is a central strategy. A variety of biomass fuel sources are being investigated including wood chips, micanthus grass, timber stand, and organic industrial byproducts.


Total clean and renewable electricity generated by off-site projects that the institution catalyzed and for which the institution retains or has retired the associated environmental attributes, performance year:
0 MMBtu

A brief description of off-site, institution-catalyzed, renewable electricity generating devices:
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Total third-party certified RECs, GOs and/or similar renewable energy products (including renewable electricity purchased through a utility-provided certified green power option) purchased during the performance year:
0 MMBtu

A brief description of the RECs, GOs and/or similar renewable energy products, including contract timeframes:
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The website URL where information about the programs or initiatives is available:
Additional documentation to support the submission:
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Electricity use, by source (percentage of total, 0-100):
Percentage of total electricity use (0-100)
Biomass 4.30
Coal 42.80
Geothermal 0
Hydro 0
Natural gas 9.10
Nuclear 10.80
Solar photovoltaic 0
Wind 32.90
Other (please specify and explain below) 0

A brief description of other sources of electricity not specified above:
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Energy used for heating buildings, by source::
Percentage of total energy used to heat buildings (0-100)
Biomass 24.40
Coal 29.50
Electricity 0
Fuel oil 0
Geothermal 0
Natural gas 46.20
Other (please specify and explain below) 0

A brief description of other sources of building heating not specified above:
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Percentage of total energy consumption from clean and renewable sources:
19.38

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.