Water-saving Measures: Energy and Cost Savings Calculator

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This model was commissioned by the CPUC to examine the details of water-saving measures as they apply to gas and electricity savings. The calculator determines the following for individual water conservation measures as well as utility programs: water savings, energy savings, energy savings avoided cost, and the Total Resource Cost (TRC). The model is publicly available online. While the model is useful in calculating energy savings and cost savings from water related measures, it does not calculate energy intensity or resulting drops in energy intensity as a result of water conservation. Energy intensity is a user defined input. Instructions for use of the model are well documented by the authors. In addition, the model provides several default water saving measures to get users started; however, source for some default values are absent from documentation.



 



Citation Information

  • Title: Water-Energy Measure Calculator
  • Prepared by: James J. Hirsh & Associates and Lon W. House (Water and Energy Consulting)
  • Source type: Excel model and report documentation
  • Date: June 2007
  • Website: http://www.doe2.com/download/Water-Energy/

Background

This calculator was commissioned by the California Public Utilities Commission (CPUC) to examine the details of water-saving measures as they apply to gas and electricity savings. The calculator determines the following for individual water conservation measures as well as utility programs: water savings, energy savings, energy savings avoided cost, and the Total Resource Cost (TRC). The model is publicly available online [2].

Review of Model from CPUC Embedded Energy in Water Study 2

  • The model is useful for calculating energy savings and cost savings from water related measures.
  • The model does not calculate energy intensity or resulting reductions in energy intensity as a result of water conservation. Energy intensity is a user defined input.
  • The model provides several default water saving measures to get users started. [2].

References

  1.  "Embedded Energy in Water: Study 2, Appendix A"
  2. 2.0 2.1 (Published: August 2010) "Embedded Energy in Water: Study 2, Appendix A, page A-24"