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Storm Restoration

Nashville, TNJune 25-27, 2014

2014 Transmission & Distribution BenchmarkingData Review Conference

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Agenda

Guidelines Review

Key Measures

Anomalies, Issues, Outliers and Corrections

Next Steps

Guidelines

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Key Terms and Definitions

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Storm Event An individual storm or closely spaced series of storms which

resulted in numerous, widespread electric service interruptions. Multiple storms are typically grouped and

counted as one storm event if restoration from an earlier storm was still in progress when subsequent storms

occurred.

Excludable Classify storms as excluded if the majority of restoration days

Storm Event * were excludable as major event days per the IEEE Standard 1366 (2.5 beta method)

Peak Number of The peak number of simultaneous sustained customer Customers Out interruptions that were recorded during a storm event

Total Customers The total number of sustained customer interruptions Interrupted caused by a storm event calculated on a cumulative

basis throughout the duration of the event. Individual

customers that may have experienced multiple sustained interruptions during a

storm event should be counted multiple times. Do not count momentary

interruptions.

* New definition to be added to Glossary

Key Terms and Definitions (Continued)

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Significant Storm A storm event that interrupted more than 1% up to 10% of a company’s total distribution end use customers

(cumulative interruptions)

Major Storm A storm event that interrupted more than 10% up to 20% of a company’s total distribution end use customers

(cumulative interruptions)

Catastrophic Storm A storm event that interrupted more than 20% of a company’s total distribution end use customers

(cumulative interruptions)

Hours to Complete The time in hours that it took to restore all customers Restoration interrupted by a storm event,

starting from the hour when the first service interruptions occurred and extending

through the hour when the last affected customer that could receive

service was restored Storm CAIDI = Total Customer Minutes Interrupted/Total

Customers Interrupted, calculated for the full duration of a storm event (same timeframe as Hours to

Complete Restoration definition)

Key Measures

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Storm Activity Profiles

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* # of reporting companies that experienced storms in these size ranges

We need more companies to report their 2013 data. These early results suggest that the overall storm activity in 2013 was much lower than what was experienced over the previous six years

2013 YE 2012 YE 2007-2011

Min Mean Max # of Bars Min Mean Max # of

Bars Mean # of Bars

Number of Storm Events Per Company Per Year

Significant Storms 3 6.7 11 7 1 8.4 15 11 8.0 15

Major Storms 0 0.4 2 7 0 0.7 3 12 0.5 17

Catastrophic Storms 0 0.1 1 7 0 0.3 2 12 0.2 17

Average Storm CAIDI Per Event (minutes)                

Significant Storms 99 157 223 7* 135 185 325 11* 162 15*

Major Storms 104 260 416 2* 104 219 348 4* 444 9*

Catastrophic Storms 465 465 465 1* 450 1467 1883 3* 1248 8*

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Number of Storm Events Experienced in 2013

Report page 2

OutlierStorm experience varied widely across the community

Min 3

Mean 7.2

Max 12

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Average Storm CAIDI – 2013

As expected, the average Storm CAIDI increased with storm size

(This graph should show parallel bars for each storm size grouped by company, not stacked bars. 1QC will fix)

Report page 3

Avg. for Significant Storms

157

Avg. for Major Storms 260

Avg. for Catastrophic Storms

435

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Major and Catastrophic Storms – Percent of Poles Replaced

Report page 8

2013 2007 - 2012

# Bars 4 19

Min 0.0095% 0.0033%

Mean 0.0107% 0.1368%

Max 0.0112% 0.9471%

The pole damage for the four 2013 storms was very uniform and falls at the low end of the range experienced in 2007 to 2012

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Major and Catastrophic Storms – Total Restoration Cost per Customer Restored (Capital + O&M)

Report page 10

2013 2007 - 2012

# Bars 4 24

Min $3.16 $3.59

Mean $45.24 $65.12

Max $86.83 $131.61

The cost per customer restored varied widely on the 2013 storms. Overall the 2013 costs rank at the low end of the very wide range experienced in 2007 to 2012

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Major and Catastrophic Storms - Peak Line Staffing Per 1,000 Customers Out at Peak

Calculation Used:Storm 1: RP30.1A/RP20f.1A, RP30.2A/RP20f.1AStorm 2: RP30.1B/RP20f.1B, RP30.2B/RP20f.1B Report part 2, page 2

2013 2007 - 2012

# Bars 4 27

Min 1.0 2.3

Mean 6.9 8.0

Max 11.3 33.5

Company 38 should verify its line staffing data for Storm 1. This is the lowest value in our database for major and catastrophic storms going back to 2007.

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Major and Catastrophic Storms - Peak Total Field Staffing Per 1,000 Customers Out at Peak

Calculation Used:Storm 1: RP30.1A/RP20f.1A, RP30.2A/RP20f.1A, RP30.3A/RP20f.1A, RP30.4A/RP20f.1A, RP30.5A/RP20f.1A, RP30.6A/RP20f.1AStorm 2: RP30.1B/RP20f.1B, RP30.2B/RP20f.1B,RP30.3B/RP20f.1B, RP30.4B/RP20f.1B, RP30.5B/RP20f.1B, RP30.6B/RP20f.1BReport part 2, page 3

2013 2007 - 2012

# Bars 4 27

Min 5.3 5.0

Mean 11.4 12.2

Max 20.8 40.3

Company 38 should verify its line staffing data for Storm 1. It’s unusual to deploy less line staffing than tree trimming and other field staffing

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Major and Catastrophic Storms - Descriptions and Damage Summaries

Calculation Used:Data extracted from questions RP20, RP20f and RP31

ID Transmission Damage Substation Damage Distribution Damage Rest. Cost # Poles Repl.23 Storm 1 none none 214 poles, 252 XFMRS, 6,700 fuse links,

900 cross arms, 5,600 lbs of wire.$76,531,455 214

30 Storm 1 Majority of damage was related to distribution

$5,145,802 52

30 Storm 2 Majority of damage was related to distribution

$3,309,899 61

38 Storm 1 6 transmission lines operated out and in; found a few cracked insulators

None several incidents of conductor down $422,450 39

ID Storm TypeStorm Name Excludable?* Date Total CI

Hrs to Restore Weather Severity Conditions During Restoration

23 Storm 1 Snow, Ice Cleon Yes 12/5/2013 881,378 143 Wind, sleet, snow, freezing rain, ice accumulation 1/2 to 1 inch.

cold, ice lasting 3 to 4 days, freezing fog, transportation problems

30 Storm 1 Snow Rocky Yes 2/26/2013 106,678 75 8-12 inches of heavy, wet snow Most snow still on ground, slow driving conditions, cold temperatures

30 Storm 2 Thunderstorm Yes 5/19/2013 77,419 47 Torrential rains, gale force winds with gusts up to 77 mph

Clear weather

38 Storm 1 Wind 2/25/2013 133,762 29 Thunderstorm with high winds gust up to 30MPH

Rain with some high winds

* Answered "Yes" if majority of restoration days were excludable as major event days Per IEEE 2.5 Beta Method

Report part 2 page 4

Company 38 did not answer the “Excludable?” questionCompany 30 should provide more complete system damage information

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Major Storms - % Impact Curves

Calculation Used:Storm 1: RP35A/(ST5_T&DDist End Use Customers) * 100, Storm 2: RP35B/(ST5_T&DDist End Use Customers) * 100

Report part 2, page 5

Company 30 Storm 2 shows no customers out before the hour of the customer outage peak -- this is unusual

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Major Storms - Customers Restored (Cumulative)

Calculation Used:Storm 1: Sum RP55A, Storm 2: Sum RP55BReport part 2, page 7

Company 30 Storm 2 shows no customer restorations before the hour of the customer outage peak – this is unusual

Issues found: Storm Restoration

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Page # Q # Primary Issue Who3 RP15 Change graph type – it should show parallel bars for each

storm size grouped by company, not stacked bars1QC

Part 2, pages 2 and 3

RP30 Verify line staffing data for Storm 1 --- value is low compared to other storms in our database and in relation to reported tree trimming and other field staffing for this storm. Also, the number of line people reported as working on this storm is a small faction (less than 10%) of company distribution line field staffing reported in question SO15

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Part 2, page 4

RP 20 Did not answer “Excludable” question for Storm 1: mark “yes” if majority of restoration days were excludable per IEEE Standard 1366 (2.5 beta definition)

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Part 2, page 4

RP31 For both reported storms, please provide more specific information on Distribution damage and clarify whether there was any Transmission or Substation damage

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Part 2, pages 5 and 7

RP35, RP55

For Storm 2 ,verify that there were no storm-related customer outages and restorations prior to the hour of the reported customer outage peak

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Next Steps

1. Data Stewards will work with companies to address their data gaps, outliers and other issues

2. Insights Conference presentation will include an analysis of all storm activity in the community from 2007 to 2013, including: Updated Restoration Curves incorporating the 2013 major and

catastrophic storms Updated Correlation Graphs incorporating the 2013 major and

catastrophic storms Highlights of Emergency Response practice information collected this

year in the Distribution Reliability section of the questionnaire

Thank you for your Input and Participation!

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Corporate OfficesCalifornia400 Continental Blvd. Suite 600El Segundo, CA 90245(310) 426-2790

Maryland3 Bethesda Metro Center Suite 700Bethesda, MD 20814(301) 961-1505

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First Quartile Consulting is a utility-focused consultancy providing a full range of consulting services including continuous process improvement, change management, benchmarking and more. You can count on a proven process that assesses and optimizes your resources, processes, leadership management and technology to align your business needs with your customer’s needs.

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About 1QC

Satellite Offices

Debi McLain Debi.McLain@1QConsulting.com760-272-7277

Tim. SzybalskiTim.Szybalski@1QConsulting.com301-535-0590

Dave CanonDave.Canon@1qconsulting.com817-980-7909

Dave CarterDave.Carter@1qconsulting.com414-881-8641

Your Presenters

Ken Buckstaff Ken.Buckstaff@1QConsulting.com310-922-0783