Construction will last for 2 years in these 20-year contracts and will be split into two projects:

Construction will last for 2 years in these 20-year contracts and will be split into two projects:

Package 1

Includes the following sites: County Building and Dunne Building-Completed Q1 2016

• 31% Greenhouse Gas emission reduction

• $11.4 million construction

• Reduce energy consumption by 30% and water consumption by 13%

• Lighting upgrades, energy management control system upgrades, water conservation measures, upgrades to chilled water, hot water, and steam distribution systems

Package 2

Includes the following sites: Skokie, Bridgeview, Markham and Rolling Meadows Courthouses, 5 Highway Maintenance Facilities-Completion Anticipated Q4 2017

• 56% Greenhouse Gas emission reduction

• $32.8 million construction

• Reduce energy consumption by 53% and water consumption by 27%

• LED lighting upgrades, boiler plant upgrades, chiller plant upgrades, energy management controls systems upgrades, window replacements, water conservation measures

• Geothermal ground source heat pump at Skokie Courthouse

• Solar Photovoltaic “trees” installed at Bridgeview courthouse parking lot

Featured project updates

Cook County’s energy service contracts will be entering the measurement and verification stage to track annual energy savings and emissions goals after installation is complete.  This monitoring will continue to track these energy and emissions savings for 20 years.  This tracking will also help to ensure the mandate for an 80% emissions reduction by 2050 is on target to be met.  The following three projects showcase some of the innovative energy savings measures that the energy service contracts at Cook County enabled.

Bridgeview Courthouse

Bridgeview Courthouse

Renewable energy investment continues to be a strategic way to reduce energy source greenhouse gas emissions and to use alternative energy resources for long term utility cost savings.  Twelve Solar Trees were installed in the parking lot at the Bridgeview Courthouse to use sunlight to generate electricity.  These trees also reduce heat and snow impacts by shading areas of the parking lot.  The combined power output potential is 200 kW as each tree has a 16.8 kW capacity.  

Skokie Courthouse: Central Plant Geothermal Ground Source Heat Pump

Skokie Courthouse

Skokie Courthouse was the first County-owned facility to add a geothermal heat pump system to its energy portfolio.  A geothermal heat pump system uses heat from the ground to reduce electricity or natural gas needs required for mechanical cooling and heating.  Combined with new natural gas boilers and more efficient chillers, the geothermal heat source pump system uses a closed looped system that is about three times more efficient for heating and 21% more efficient for cooling than the original mechanical systems. 

Thermal Walls - Department of Highways and Transportation Buildings

Thermal Walls

Thermal walls were installed at Department of Transportation and Highways facilities in Riverdale, Des Plaines, Schaumburg, and Orland Park.  A thermal wall aims to use passive energy and design principles to reduce heat losses and achieve gains for more efficient facility heating practices.  The walls directly convert sunlight into thermal energy for heating on sunny days, and small fan units blow the warm air into the interior of the building.  South-facing design and new air distribution ductwork allow for energy storage and use of the solar thermal energy during the evening hours, and heating during the day that reduces utility costs and associated greenhouse gas emissions.