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City ofWapakonetaWastewater Treatment Plant
Wapakoneta, Ohio
Project Background
Energy Systems Group (ESG) was selected
by the City of Wapakoneta to investigate
energy efficiency measures to implement
at a variety of city facilities. As part of
the $1.34 million energy performance
contract, Energy Systems Group designed
and developed improvements for the
City’s wastewater treatment plant.
The 4 million gallons per day (MGD)
capacity plant, originally built in 1932, uses
an activated sludge treatment process.
Strategies & Solutions
The upgrades included the addition of
dissolved oxygen sensors for the aeration
system, which allowed the large horsepower
motors on the blowers to operate less often.
Other improvements included expansion
and repairs for the supervisory control, or
SCADA, system. These projects improved
operator control of the plant. This work
would not have been possible without
the alternative funding approach of an
energy savings performance contract.
This project resulted in total energy savings
of $338,360 over the ten year contract. This
represents a reduction of over 25% of the
total annual electric costs for the plant.
Energy Savings Over
I felt the project went very
smoothly and the savings
were quickly apparent. The
construction experience was
especially amazing. One of the
subcontractors even worked
nights so as not to disrupt our
operation. I would definitely
do it again.”
Robert Burns,
Wastewater Superintendent
ESG is an award-winning energy services company that provides its customers with
innovative energy efficiency, technology, and long-term financing solutions for
modernization of their facilities and energy infrastructure.
© 2012 Energy Systems Group, LLC. All rights reserved.