Pole-Mounted Lights (Barn Lights)
Proven UES Measure Proposal
Regional Technical Forum
January 22, 2014
Today’s Agenda
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Measure Overview and History
Staff Highlighted Areas
Subject Matter Expert Interviews
UES Workbook
– Measure Descriptions
– Measure Analysis and Input Details
– Savings, Cost, and Cost Effectiveness
• RTF Staff Recommendation
• Proposed Decision
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Measure Overview
• What is a “barn light?”
Photocellcontrolled
Pole- or wallmounted
Often owned and
maintained by utilities
NEMA Type V
dusk-till-dawn
fixture
Typically use
100-200W
HID lamps
(base case)
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Photo from www.frostelectric.com.
Measure History
• 2011 BPA study investigated measure costeffectiveness, but the measure was not presented to
RTF.
• The 2011 study included:
– Interviews with utility lighting Subject Matter
Experts (SMEs) to determine base case equipment
types and distributions across BPA territory
– Estimation of project costs
– Estimation of measure cost-effectiveness
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Measure History (continued)
• In late 2013, RTF Small and Rural (SR) Subcommittee
decided to investigate barn lights as a potential UES
measure
• Scope of the SR barn lights measure investigation:
– Repeat SME interviews from 2011 to update/verify base
case equipment types and distributions
– Expand SMEs interviewed to include BPA utilities and IOUs
– Develop ProCost workbook using updated base case
characterizations, equipment costs, and EULs
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Staff Highlighted Areas
• None.
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Subject Matter Expert (SME) Interviews
• SME’s interviewed in 2013:
Individual
Utility
Region
Erin Hope*
BPA
E Washington
Dick Stroh*
BPA
Idaho
David Bopp
Flathead Electric
NW Montana
Jim Maunder
Ravalli Electric
W Montana
Vic Hubbard
Franklin PUD
S Washington
John Wilson
BPA
All BPA territory
Virginia Harman
Glacier Electric
NW Montana
Michael Lane
Puget Sound Energy
NW Washington
Mariah Schrotzberger
Energy Trust of Oregon
Oregon (IOU territories)
Steve Schauer
Oregon Trail Electric Coop
E Oregon
* SME was also interviewed as part of 2011 Barn Lights study conducted by BPA.
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SME Interview Findings
• Majority of utility-owned barn lights are high pressure
sodium, with smaller numbers of mercury vapor and
metal halide lamps in service.
• SMEs did not put a quantitative estimate on the percent
distribution between the lamp types; instead, many
SMEs said “most” lamps are HPS.
• SMEs reported existing HID lamps with wattages of 100 1000W, with the majority of the lamps on the lower end
of the spectrum (100-250W).
• Two utilities interviewed reported that they were
replacing some HID barn lights with induction or LEDs
– Oregon Trail Electric Coop and Ravalli are replacing 100W
HPS lamps with 50W LEDs on a replace-on-burnout basis,
and leveraging BPA Lighting Calculator incentive.
SME Interview Findings (continued)
• All SMEs reported that utility-owned barn lights are
photocell-controlled.
• There are currently no LED lamp replacements
available for replacement of 200W+ HIDs; the
measure base case options are therefore limited to
100-175W HID lamps.
• Two SMEs reported already existing deemed
incentive offerings for HID to LED retrofits.
– SMEs mentioned they thought the creation of an RTF barn
light measure would create confusion with the existing
incentive offerings, and they would prefer an RTF barn
lights measure was not created.
SME Interview Findings (continued)
• ‘Current Practice’ of barn light lamp replacement
– 100, 150, and 200W HID lamps
• Replaced with similar 100, 150, and 200W HID lamps
on burnout
• Some pilot projects replacing HID with LED, but not
enough for a Current Practice baseline adjustment
– 175W Metal Halide (MH) lamps
• Replaced with similar 175W MH bulbs on burnout
– 175W Mercury Vapor (MV) lamps
• Commonly replaced with 100W HPS lamps on burnout
• For this reason, ‘Current Practice’ for a 175W MV lamp
assumed to be a 100W HPS lamp
Other Findings
• There is only one LED lamp on the market (the
Evluma® 50W Clearlight Beacon LED) that is a
suitable replacement for HID barn lights up to 175W.
– The Evluma LED is not ENERY STAR® or DLC®-approved but
has been reviewed and approved for incentives by BPA.
• Self-ballasted inductions lamps were specified in
2011 analysis; however, there are currently no ULlisted self-ballasted induction lamps available.
– Self-ballasted induction lamps were replaced with remoteballasted induction lamps in ProCost analysis
Measure Descriptions
• Go to the following sections in the Summary
tab in the proposed measure workbook:
– Measure Properties
– Measure Identifiers
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Measure Analysis and Inputs Details
• Go to the following sections in the Summary
tab in the proposed measure workbook:
– Constant Parameters
– Energy Savings Estimation Method, Parameters
and Data Sources
– Measure Incremental Costs and Benefits
– Measure Lifetime
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Savings, Cost, & Cost Effectiveness
• Go to the following sections in the
Presentation tab in the proposed measure
workbook:
– Measure savings
– Measure costs
– Measure TRC B/C ratios
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RTF Staff Recommendation
• Approve the Pole-Mounted Light (Barn Light)
UES as “Proven”
• Set the measure status to “Active”
• Set the sunset date to January 31, 2016
– A two-year sunset period is proposed instead of a
longer (e.g. five-year) period due to the rapidlychanging nature of LED costs and products
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Proposed Decision
“I _______________ move that the RTF:
• Approve the Pole-Mounted Light (Barn
Light) measure as a “Proven” UES;
• Set the measure status to ‘Active;’ and
• Set the sunset date to January 31, 2016.”
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