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Efficiency as Utility Culture

WTD has a long history of energy savings. We have been using biogas in the treatment process since 1966, began creating electricity from biogas in 1983, and started scrubbing and selling pipeline-quality biogas for use as natural gas in local homes and businesses since 1988. By becoming more energy independent we can insulate the agency against gas and electricity rate volatility or the loss of power during storms

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WTD Energy History- Click to englarge

A forward-thinking Energy Program is fundamental to WTD's environmental ethic and commitment to financial stewardship. Tasked with reigning in energy use and costs, the Energy Program is all about the numbers:

  • Collect and analyze energy data
  • Use data to support operational decisions
  • Integrate energy efficiency into capital projects

Since its establishment, the Energy Program has already led multiple strategic efforts to encourage and guide future energy-related projects.

Asset Management and Life Cycle Cost Analysis

WTD integrates energy investments, analysis, and ongoing energy savings into the overall asset management strategy. This integration allows WTD to design and build facilities with the least amount of risk, the highest degree of reliability, and at a reasonable cost. Life cycle cost analysis and Reliability Centered Maintenance principles take into account all aspects regarding energy usage: operations and maintenance needs, capital investments, chemical costs, construction cost, disposal costs, and any other quantifiable variable.

WTD owns and maintains about $6 billion in assets that include:
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  • 15 boilers
  • 863 variable frequency drives
  • 43 pump stations
  • 2,398 pumps
  • 67 engines
  • 2,413 motors

Staff Training on Energy Efficiency

In 2012, the Association of Energy Engineers (AEE) trained over 30 WTD employees on topics ranging from optimizing boiler efficiency to the pitfalls of performance contracting. This capacity-building opportunity was funded by the Federal Energy Efficiency and Conservation Block Grant (EECBG) sought by the Energy Program.

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