Public Works Energy Reduction Demonstration Project

BACKGROUND

Built in 1994 and owned by the City of Margate, the Public Works building is a government facility with offices, meeting rooms, a garage, wood shop, kitchen, locker rooms, and storage. The Public Works Energy Reduction Demonstration Project is a retrofit project that will improve the energy efficiency of the facility while increasing comfort for occupants. 

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SOLUTIONS

An internal team consisting of Public Works staff and the Sustainability Office together identified energy saving opportunities at the property. Overall, the city’s annual budget is funding $250,000 of HVAC, lighting, and cool roof upgrades to the facility. 

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The roof and HVAC were identified as needing replacement and, while reviewing replacement options, it was found that a cool roof and high-efficiency HVAC unit would provide the greatest return on investment. Additionally, the roof replacement provided the opportunity to address a lighting quality issue in the garage by adding skylights. The existing 400-watt exterior lighting was identified as being inefficient, and new LED technology will be installed for better lighting while reducing the exterior lighting load by nearly 63%. Motion sensors are being installed on interior lights as well.

  • HVAC Replacement – Will upgrade efficiency of HVAC from SEER 11 to SEER 14. This is expected to save approximately 15,500 kWh annually, or 7.7% of total building energy use and $1,550.
  • Cool Roof Replacement – Expected to decrease the cooling load on the building by approximately 12% and save 8,500 kWh annually, for a total expected building energy use reduction of 4.2% and savings of $850 per year.

Exterior LED Retrofit – Replacement of 23, 400-watt lights with 150-watt LEDs is expected to save 12.4% of total building energy use and $2,500 annually.

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OTHER BENEFITS

In addition to energy and cost savings, this project is expected to provide higher quality lighting, more consistent comfort levels, and provide City staff with data to implement similar projects at other City facilities. 

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Replacing the metal halide and sodium vapor fixtures with bright LEDs will enhance safety and security, while data obtained from the Better Buildings Challenge has already justified budget requests for energy reduction projects in other city facilities, such as lighting and HVAC improvements. By effectively reducing energy consumption, and thereby costs, the City is providing residents with the best value for their tax dollar while leading by example in sustainability efforts.

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Annual Energy Use

Baseline (2013)
168 kBtu/sq.ft
Expected (2018)
127 kBtu/sq.ft
Actual
Coming Soon

Energy Savings:

24%

Annual Energy Cost

Baseline (2013)
$20,000
Expected (2018)
$15,000
Actual
Coming Soon

Cost Savings:

$5,000

Sector Type

Local Government

Location

Margate, Florida

Project Size

13,000 Square Feet

Financial Overview

$250,000

Public Works Building
Public Works Building