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EES. Consulting. ProCost Version 3.0 Modifications. RTF Update Kevin Smit Kelly Tarp 425-889-2700. A registered professional engineering corporation with offices in the Seattle, Bellingham, and Portland metropolitan areas Telephone (425) 889-2700 Facsimile (425) 889-2725.

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procost version 3 0 modifications



ProCost Version 3.0 Modifications

RTF Update

Kevin Smit

Kelly Tarp


A registered professional engineering corporation with officesin the Seattle, Bellingham, and Portland metropolitan areas

Telephone (425) 889-2700 Facsimile (425) 889-2725

what is procost
What is ProCost?
  • It’s the Council’s energy efficiency measure cost-effectiveness model
    • Calculates costs and benefits for EE measures
    • Produces a wide range of results, from different perspectives
  • Developed in MS Excel using various worksheets and the Visual Basic macro functions.
  • Who uses ProCost?
    • The Council: to develop the supply curves for the regional power plans
    • The RTF: for measure and program cost-effectiveness analysis
    • Others including utility personnel, consultants, etc.
  • The current version is “2.3 Build 257f”
procost structure
ProCost Structure

The main ProCost file contains the ProCost VB macro and performs all the calculations.

The MC_And_Loadshape file contains data that is read into ProCost.

Excel Workbooks

Excel Worksheets

overall objectives of v3 0
Overall Objectives of V3.0
  • ProCost Functionality Changes:
    • Early Retrofit Measures – savings value changes within the measure lifetime
    • Simultaneous Calculations for Retrofit and Lost Opportunity Measures – enable different risk credit values for each
    • Marginal Line Losses – line loss varies by time segment and conservation load shape
    • Periodic Replacements Costs – End Effects
    • User-defined Time Segments Up to 8760 Hours per Year
  • Documentation
    • User’s Guide
    • Reference Manual
simultaneous retrofit and lo
Simultaneous Retrofit and LO
  • Lost opportunity measures have higher avoided cost threshold (more valuable to acquire if lost otherwise)
  • Requires two input values for the Risk Mitigation Credit
  • New input row in “ProData”, Utility System Parameter section
  • New Column on measure input/output worksheet:
periodic replacement costs
Periodic Replacement Costs
  • End effects for periodic replacement costs – not in V2.3
  • Added the capability to correctly handle the short remaining portion prior to the end of measure life.

Used same partial replacement method used for capital cost end effects

  • Impacts of the following not shown:
  • Present value time zero
  • Input cost reference year
  • Program start date
  • Sponsor shares
Early Retrofit Capability: Measures installed prior to the end of the useful life of pre-conditions baseline

Two savings values within a measure life

Remaining Useful Life

marginal line losses
Marginal Line Losses
  • Marginal line losses not in V2.3
  • Added the capability to handle marginal line losses by time segment(approved by RTF in 2008)
marginal line losses cont
Marginal Line Losses (cont.)
  • Changes to user input
  • Results comparison
user defined time segments
User Defined Time Segments
  • Version 2.3 uses Monthly by 4-Segment = 48 bins/year
  • Added capability for up to 8760 (hourly) time segments
  • Key Components:
    • For testing, EES generated 8760 data from 48 segment data
    • Restructured MC_AND_LOADSHAPE format
    • Load shapes, load factors, and coincidence factors for user defined time segments developed under a separate RTF effort
    • Separate MC_AND_LOADSHAPE file for each segment type (e.g., 48 and 8760 segments)
    • New header in MC_AND_LOADSHAPE
user defined time segments cont
User Defined Time Segments (cont.)
  • Challenges:
    • MC_AND_LOADSHAPE file size
      • Current model requires 8760 segments X 20 years for each load shape
      • Separate MC file for each segment type (e.g., 48 and 8760 segments)
      • Current 8760 segment MC file contains just 3 load shapes for testing plus all 20 year price forecasts (65 MB)
      • Suggested calendar function will reduce data to a single year X 8760 segments
      • Estimated file size = 64 MB (1 year X 8760 segments X 200 load shapes)
      • Additional options to reduce file size by condensing data to 1 worksheet
    • 8760 runtime
      • MC file takes approx. 45 sec. to open + additional 45 sec. to run ProCost
      • Static versus dynamic arrays – kept static, but using dynamic could improve efficiency
      • Precision – reduced arrays to single precision from double
testing 8760 capability
Testing 8760 Capability
  • EES completed initial testing against 48-bin an analysis
  • Council staff testing impact of change
  • Initial findings to be reported on Feb 20, 2013
  • User’s Guide
    • How to use ProCost
    • High level “getting started” guide
  • ProCost Reference Manual
    • How ProCost works
    • Every thing else about ProCost
what s next
What’s Next?
  • Prior to 3.0 Release
    • Integrate the new conservation load shape data and calendar function
    • Stabilize the ProData interface
    • Additional testing and developing of test cases
    • Cost reference year, 2006
  • Longer Term Items
    • New MC file format
    • Source review
    • New capability for capacity and peak kW
    • Batch processor tool
    • Online version