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Potato/Onion Shed Variable Frequency Drives

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UES Measures Standard protocols list Demand Response Technologies Supporting Documents Propose a measure or standard protocol Proposed measures and status Whole Building Efforts

Subcommittees

  • Commercial HVAC
  • Connected Thermostats
  • Demand Response
  • Duct Sealing
  • Guidelines
  • Heat Pump Water Heaters
  • Implementers Group
  • Modeling
  • Natural Gas
  • New Homes
  • Non-Residential Lighting
  • Operations
  • Refrigeration
  • Research and Evaluation
  • Residential HVAC
  • RTF Policy Advisory Committee
  • Small and Rural Utilities
  • Weatherization
  • Whole Building
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UES Measure

  • Potato/Onion Shed Variable Frequency Drives

Potato/Onion Shed Variable Frequency Drives

At a Glance

Category 
small saver
Status 
active
Fuel type 
electric
Sector 
agricultural
Applications 
motors/drives
Sunset date 
Oct 31, 2026

This measure entails the retrofitting of an onion or potato storage shed's ventilation fan, between 5 horsepower and 500 horsepower, with a Variable Frequency Drive (VFD). For this measure savings are calculated using a linear regression of 38 projects and presented as savings per horsepower (kWh/hp) multiplied by fan motor horsepower. 

At the August 2019 RTF Meeting, the RTF extended the sunset date out another 5 years without making any changes to these savings. The RTF is interested, however, in collecting any available data from recent to update the savings in the future. 

Workbook

Latest Version

Potato/Onion Shed VFD v5.1

File Potato/Onion Shed VFD v5.1
Approved at May 2024 RTF meeting. QA Complete
Date 
Aug 9, 2024
Version number 
5.1

Past Versions

version date document
4.3
Jun 03, 2024
File Potato/Onion Shed VFD v4.3
Approved at May 2024 RTF meeting. Undergoing QAQC.
4.1
Jul 14, 2023
File Potato/Onion Shed VFD v4.1
Updated cost effectiveness using procost version 5.08
4.0
Apr 18, 2022
File Potato/Onion Shed VFD v4.0
Updated with 2021 Plan cost effectiveness methodology
3.3
Nov 14, 2016
File Potato/Onion Shed VFD v3.3
Updated to 7th Plan format and assumptions. QC review complete. RTF reaffirmed these savings at is August 2019 meeting.
3.2
Jun 28, 2016
File AgPotatoOnionShedVFD_v3_2.xlsm
Updated to 7th Plan format and assumptions. Currently undergoing QC.
3.1
Jan 04, 2016
File AgPotatoOnionShedVFD_v3_1.xlsm
Delivery verification checklist added
3.0
Jun 25, 2014
File AgPotatoOnionShedVFD_v3_0.xlsm
QC review complete.
2.5
May 20, 2014
File AgPotatoOnionShedVFD_v2_5.xlsm
Updated per recommendation memo. Currently undergoing QC.
1.3
Oct 24, 2012
File AgPotatoOnionShedVFD_v1_3.xls
Summary sheet added.
1.2
Oct 01, 2012
File Spud_OnionShedVFD_FY10v1_2.xls
Original savings workbook.
Supporting Documents
File Potato/Onion Shed VFD Recommendation Memo
Dec 19, 2018
Documents the results of PECI’s detailed review of the UES measure

Decisions

Expand All Decisions

Latest decision

Decision details

Decided 
May 21, 2024
RTF Meeting

Approve Measure Updates

Decision Details

Approve Potato/Onion Shed Variable Frequency Drives costs and load shape as presented, and:
-Keep the Category at Small Saver
-Keep the Status at Active
-Keep the sunset date on October 31, 2026

Decided 
March 19, 2024
RTF Meeting

Approve Measure Updates

Decision Details

Approve the updates as presented to the Potato/Onion Shed Variable Frequency Drive

-Use the costs from the VSD UES for equal to or below 50 HP measure applications
-Update the savings shape to be a flat over the course of the day
-Keep the Category at Small Saver
-Keep the Status at Active
-Set the Sunset Date to October 31, 2026

Decided 
August 27, 2019
RTF Meeting: August 27, 2019

Extend Sunset Date

Decision Details

Extend the sunset date for the Potato/Onion Shed Fan Variable Frequency Drive to August 2024 and:

  • Keep the Category Small Saver
  • Keep the Status Active
  • RTF will explore available data from recent projects to see if there might be an enhancement to the existing analysis.
Decided 
April 23, 2019
RTF Meeting: April 23, 2019

Extend Sunset Date

Decision Details

Extend the sunset date for the Potato/Onion Shed VFD UES to August 2019. 

Decided 
September 22, 2015
RTF Meeting: September 22, 2015

Approve measure update

Decision Details

Adopt the delivery verification guidance, and related specification refinements, as presented for the following measures:

  • Agricultural Irrigation Hardware
  • Agricultural Lighting – Area Lights
  • Agricultural Stock Watering Tanks
  • Agricultural Variable Frequency Drives – Potato/Onion Shed;
  • Commercial Appliances – Clothes Washers
  • Commercial Cooking Equipment – Combination Ovens
  • Commercial Cooking Equipment – Convection Ovens
  • Commercial Cooking Equipment – Fryers
  • Commercial Cooking Equipment – Hot Food Holding Cabinets
  • Commercial Cooking Equipment – Pre-Rinse Spray Valves
  • Commercial Cooking Equipment – Steamers
  • Commercial DHW – Efficient Tanks
  • Commercial DHW – Showerheads
  • Commercial Grocery – Anti-sweat Heater Controls
  • Residential Heating/Cooling – DHP for FAF in SF and MH
  • Residential Heating/Cooling – DHP for Zonal Heat MH
  • Residential New Construction – Slab Insulation
Decided 
April 23, 2014
RTF Meeting: April 23, 2014

Approve measure update

Decision Details

Approve the Variable Frequency Drives - Potato/Onion Shed measure as a Small Saver UES; Set the measure status to Active; and set the sunset date to April 30, 2019.

Decided 
November 19, 2013
RTF Meeting: November 19, 2013

Sunset date extension

Decision Details

Accept staff’s proposed plan to bring the Out-of-Compliance UES measure into compliance and to extend the sunset date to April, 2014.

Decided 
October 24, 2012
RTF Meeting: October 24, 2012

Set measure to Out of Compliance

Decision Details

Adopt the SBW recommendations for the Agriculture Potato/Onion Storage Shed VFD on Product Ventilation Fan measure and change the status to Out of Compliance with a sunset date of November 1, 2013.

RTF staff will work with stakeholders to develop a plan to bring the measure back into compliance with the Guidelines based on the recommendation memo and seek RTF approval of that plan by the sunset date. If a plan is not approved by the RTF by the sunset date, the measure will be deactivated.

Decided 
April 07, 2009
RTF Meeting: April 7, 2009

Approve measure update

Decision Details

The RTF approved recommendations for BPA and others to: a) use 1,000 kWh/year per horsepower as the deemed value for VSD potato and onion shed ventilation fans, and b) derive an estimated cost for this measure using the following equation: Measure cost = $229.61*HP + $4,727.43.

Decided 
November 04, 2008
RTF Meeting: November 4, 2008

Approve measure update

Decision Details

The RTF adopted a deemed savings value of 1,000 kWh per hp for the spud/onion shed VFD measure, with a provison that people are free to bring custom projects to the table for consideration.

Small/rural Checklist

Latest Version

July 2014 Potato/Onion Shed Small/Rural Checklist

File July 2014 Potato/Onion Shed Small/Rural Checklist
Date 
Jul 7, 2014

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