PROJECT DESCRIPTION

Delta provided Electrical engineering services for the evaluation of existing street lighting system and assessment of alternatives inclusive of SMART Meter Technology.

The general scope of work was to provide the City of Evanston with a street light master plan as a proactive approach to determine available options, costs, priorities associated with street light improvements, and for programming future capital improvement projects.

In 2007, the City completed the replacement of mercury vapor fixtures in the City’s historic Tallmadge lights with brighter, more energy efficient induction lighting. Davit light fixtures have been upgraded to induction lighting as opportunities arose.  Recent street  infrastructure  along  the  Emerson  Street/Ridge  Avenue/Green  Bay  Road Corridor Improvement Project included replacing the old Davit light fixtures with new Davit fixtures which included pedestrian scale down lighting and LED fixtures.

The existing system comprised of the following:

• Lighting Control Technology – All the street lights are on Power Central controlled photoelectric cells.
• Power Centers – There are currently 107 street light power centers that control the street lighting through-out the City and most of these were replaced since 2010. Most are 100 AMP capacity and a few are 150 AMP capacity.
• Street Light Metering – The City currently does not utilize light metering and relies on ComEd’s system to estimate consumption.

Specific services provided by Delta Engineering included:

• Field reconnaissance of existing lighting system and cost analysis of adding smart meters to controllers
• Report on advantages of installing new “smart city” technology, what data it can report to municipality and 7-pin nodes for new lighting units
• Cost analysis of utilizing smart meter technology, dimming and the return of investment for using led luminaires smart meter technology, smart city networking and software