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CASE STUDIES |
Anoka County Government Facilities, Anoka, MN
Public-Private Partnership Saves Taxpayer Dollars
The Anoka County Comprehensive Energy Services project included facility improvement measures in ten buildings totaling over 880,000 square feet. Anoka
County entered into a Comprehensive Energy Services contract with ESG in an effort to generate savings to reinvest in their government buildings and building systems. This project is unique in that retrofits will be carefully implemented in phases while other planned facility improvement projects and traditional remodeling projects are being implemented in tandem in the future.
Challenges:
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Aging and outdated government service facilities and infrastructure including HVAC and electrical systems. |
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Increasing demand on utilities, increasing energy and operating costs - budget shortfalls. |
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Shortage of capital funds to address deferred maintenance. |
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Uncomfortable working environments for building inhabitants. |
Solutions:
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Design a $6.5 million Performance Contract with Energy Service Group to audit and update Anoka County building's for increased energy efficiency and environmental comfort. |
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Installation of lighting retrofits including converting existing fixtures from T-12 fluorescent lamps and magnetic ballasts to T-8 lamps and electronic ballasts, and convert incandescent lighting to fluorescent lighting. Installation of new fixtures to increase light levels. |
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Installation of room occupancy sensors and exterior photocells for improved lighting control. |
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Central heating and cooling plant modifications to include new energy efficient boiler and chiller installations. |
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Installations of on-site electricity generator to convert government buildings to utility peak control electricity rates and provide emergency back-up power. |
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Deferred maintenance improvements including replacement of air handling units, cleaning and repairing mechanical system components for improved efficiency and comfort. |
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Installation of variable speed drives on motors for efficient control and extended equipment life. |
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Installation of energy efficient motors on mechanical systems for efficiency and reliability. |
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Installation of a countywide energy management system and direct digital controls on HVAC equipment for improved efficiency and comfort. |
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Ongoing ten year partnership with Energy Service Group providing training and maintenance staff development, measurement/verification and performance assurance. |
Results:
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Guaranteed annual utility savings of $230,000. |
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Environmental savings of over 460,000 gallon of water annually, and over 2.3 million kWh of electricity. |
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Implemented projects with minimal interruptions to county staff working environments. |
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Improved comfort levels, operating efficiency, and taxpayer image. |
Conclusion:
By initiating the $6.5 million contract with ESG, Anoka County subsidized the project with savings generated by decreased energy consumption.
"We wanted to see savings in our utility bills," says Dale Winch, director of property management of Anoka County. "But we didn't want the emphasis only on energy. When we analyzed the lighting retrofit, ESG recommended lighting options that would save energy and also recommended and installed additional lighting to improve the light levels in the work environment. We also combined energy conservation measures with needed deferred maintenance improvements."
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