Rocky Mountain Power Load Growth and Network Planning

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Rocky Mountain Power Load GrowthandNetwork
Planning

• April 27, 2007
• Mark Adams

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First stop,Wyoming Industrial Load Growth
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• New and Proposed Industrial Loads
• Jonah Field / Upper Green River Basin
• Load locations
• Our latest network planning
• Wamsutter / South Central Wyoming
• Load locations
• Our latest network planning
• Entire State
• Additional large load
• Our latest network planning

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Projected Load Increases
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Wyoming Industrial Load Forecast - Megawatts
A display of the 2006 Wyoming peak load for all
customers (Base Load) with a 2 year on year
load growth overlaid with the new industrial load
growth.
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Jonah Field
Total Load of 545.5 Megawatts Jonah is one of
the largest gas fields in the U.S. with reserves
of 2.5 trillion cubic feet of gas. The loads in
this geographic area represent natural gas
processing and transportation and CO2 capture and
transportation customers.
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Jonah Field Infrastructure
PINEDALE
DANIEL
Ross Switchrack
230kV 69kV
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Paradise 75MVA
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230kV
Atlantic
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230kV
BIG PINEY
Chimney Butte 75MVA
230kV
City
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69kV
230kV
230kV
230kV
Jonah Field Switchrack (future 100MVA sub)
Wind River Phase Shifter
Chappel
LA BARGE
EDEN
230kV
Shute
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230kV
Creek
KEMMERER
to Creston Switchrack
Opal
Naughton
Monument
Blacks Fork
Westvaco
Palisades
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Rock
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Blue Rim
Springs
ROCK SPRINGS
South
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Firehole
Mansface
Trona
EVANSTON
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Wamsutter / South Central Wyoming
Total Load of 433.5 Megawatts The loads in this
geographic area represent nature gas and oil
processing, transportation, CO2 injection, and
coal bed methane customers.
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Wamsutter / South Central Wyoming Infrastructure
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All Projects in Wyoming
Balance of the additional new industrial load in
Wyoming is 120 Megawatts, mostly oil and gas
processing customers.
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Infrastructure in Wyoming
The physical electrical network requirements
change dramatically as customers change facility
sites and load requirements and as new customers
make requests. The view represents approximately
500 million in transmission and distribution
infrastructure investment.
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2nd stop,Utah Industrial Commercial Load
Growth
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Northern Utah

1. Northern Utah (less Salt Lake County) currently
   has 123 MW of proposed development.

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Projected Load Increases
  Load Location Probability of Occurrence Customer Projected Load Increase MW 2007 2008 2009 2010 2011 2012
1 Northern Utah Medium 1.2 0.6 1.2 1.2 1.2 1.2 1.2
2 Northern Utah High 10.0 10.0 10.0 10.0 10.0 10.0 10.0
3 Northern Utah High 1.0 0.8 0.8 0.8 0.8 0.8 0.8
4 Northern Utah High 3.5 3.5 3.5 3.5 3.5 3.5 3.5
5 Northern Utah Low 4.0 4.0 4.0 4.0 4.0 4.0 4.0
6 Northern Utah High 13.0 13.0 13.0 13.0 13.0 13.0 13.0
7 Northern Utah Medium 0.9 0.9 0.9 0.9 0.9 0.9 0.9
8 Northern Utah High 30.0 0.0 15.0 30.0 30.0 30.0 30.0
9 Northern Utah High 2.5 1.2 2.0 2.0 2.0 2.0 2.0
10 Northern Utah High 7.5 5.0 5.0 7.5 7.5 7.5 7.5
11 Northern Utah Low 2.0 2.0 2.0 2.0 2.0 2.0 2.0
12 Northern Utah High 2.0 2.0 2.5 2.5 2.5 2.5 2.5
13 Northern Utah High 40.0 40.0 40.0 40.0 40.0 40.0 40.0
14 Northern Utah High 5.5 3.5 5.5 5.5 5.5 5.5 5.5
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South-East Utah

1. South-Eastern Utah has load requests totaling 192
   MW. These increases are expected in the next 1-5
   years.

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Projected Load Increases
  Load Location Probability of Occurrence Customer Projected Load Increase MW 2007 2008 2009 2010 2011 2012
1 Southeastern Utah High 1.2 1.2 1.2 1.2 1.2 1.2 1.2
2 Southeastern Utah High 120.0 8.0 29.0 62.0 72.0 90.0 120.0
3 Southeastern Utah Medium 8.0 0.0 4.0 8.0 8.0 8.0 8.0
4 Southeastern Utah Medium 16.0 0.0 10.0 10.0 10.0 10.0 10.0
5 Southeastern Utah Low 5.0 2.0 5.0 5.0 5.0 5.0 5.0
6 Southeastern Utah High 2.5 2.5 2.5 2.5 2.5 2.5 2.5
7 Southeastern Utah High 1.0 1.0 1.0 1.0 1.0 1.0 1.0
8 Southeastern Utah High 2.0 2.5 2.5 2.5 2.5 2.5 2.5
9 Southeastern Utah High 6.0 3.0 5.0 6.0 6.0 6.0 6.0
10 Southeastern Utah High 30.0 10.0 20.0 30.0 30.0 30.0 30.0
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South-West Utah

• South-West Utah has load requests totaling 35
  MW. These increases are also expected in the
  next 1-5 years

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Projected Load Increases
  Name Probability of Occurrence Customer Projected Load Increase MW 2007 2008 2009 2010 2011 2012
1 Southwest Utah High 3.5 0.0 3.5 3.5 3.5 3.5 3.5
2 Southwest Utah High 2.0 2.0 2.0 2.0 2.0 2.0 2.0
3 Southwest Utah High 5.0 2.5 5.0 5.0 5.0 5.0 5.0
4 Southwest Utah Medium 3.0 3.0 3.0 3.0 3.0 3.0 3.0
5 Southwest Utah High 4.8 4.8 4.8 4.8 4.8 4.8 4.8
6 Southwest Utah High 2.2 2.2 2.2 2.2 2.2 2.2 2.2
7 Southwest Utah High 4.0 0.0 4.0 4.0 4.0 4.0 4.0
8 Southwest Utah Medium 10.0 10.0 10.0 10.0 10.0 10.0 10.0
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Salt Lake County

• Northern Salt Lake County has had requests
  totaling 60 MW.

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Projected Load Increases
Name Probability of Occurrence Customer Projected Load Increase MW 2007 2008 2009 2010 2011 2012
Northern Salt Lake County Medium 1.5 0.8 0.8 1.5 1.5 1.5 1.5
Northern Salt Lake County High 8.0 2.5 5.0 7.5 7.5 7.5 7.5
Northern Salt Lake County High 8.0 0.0 8.0 8.0 8.0 8.0 8.0
Northern Salt Lake County Low 8.5 8.5 8.5 8.5 8.5 8.5 8.5
Northern Salt Lake County Medium 0.9 0.9 0.9 0.9 0.9 0.9 0.9
Northern Salt Lake County High 2.0 2.0 2.0 2.0 2.0 2.0 2.0
Northern Salt Lake County High 18.0   4.0 9.0 13.0 18.0 18.0
Northern Salt Lake County Low 1.0 1.0 1.0 1.0 1.0 1.0 1.0
Northern Salt Lake County High 5.0 0.0 0.0 5.0 5.0 5.0 5.0
Northern Salt Lake County High 0.8 0.8 0.8 0.8 0.8 0.8 0.8
Northern Salt Lake County High 5.0 2.5 5.0 5.0 5.0 5.0 5.0
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South Salt Lake County

• Southern Salt Lake County has had requests
  totaling 33 MW.

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Projected Load Increases
Rocky Mountain Power - New Utah Loads                
  Name Probability of Occurrence Customer Projected Load Increase MW 2007 2008 2009 2010 2011 2012
1 Southern Salt Lake County High 11.5 6.0 8.0 10.0 11.5 11.5 11.5
2 Southern Salt Lake County High 1.5 1.5 1.5 1.5 1.5 1.5 1.5
3 Southern Salt Lake County High 0.8 0.8 0.8 0.8 0.8 0.8 0.8
4 Southern Salt Lake County High 5.0 0.0 5.0 5.0 5.0 5.0 5.0
5 Southern Salt Lake County Medium 1.5 1.5 1.5 1.5 1.5 1.5 1.5
6 Southern Salt Lake County Low 2.0 1.5 2.0 2.0 2.0 2.0 2.0
7 Southern Salt Lake County High 10.0 10.0 10.0 10.0 10.0 10.0 10.0
8 Southern Salt Lake County High 0.5 0.5 0.5 0.5 0.5 0.5 0.5
9 Southern Salt Lake County Low 0.5 0.5 0.5 0.5 0.5 0.5 0.5
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Utah Industrial Load Forecast, MWs
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• Last stop,Utahs Wasatch Front
• Residential and small commercial Load Growth

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Wasatch Front 2006 Summer Peak What Happened?
Year Date Day Time MW CDD Annual Peak CDD Summer Total CDD
2001 August 8 Wednesday 1700 3,268 21.0 22.5 1,142
2002 July 15 Monday 1700 3,473 22.0 25.0 1,121
2003 July 22 Tuesday 1700 3,672 21.5 26.5 1,255
2004 July 14 Wednesday 1700 3,558 19.0 22.0 907
2005 July 21 Thursday 1600 3,853 21.0 24.0 1,042
2006 July 17 Monday 1700 4,051 19.0 25.5 1,196
---------------- Peak Day Statistics-------------
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Cooling Degree Day (CDD) Avg (Tmax Tmin) -
65 For example, a day with an average
temperature of 80 F will have a value of 15 CDD.
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Wasatch Front Transformer Loading - 2008
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Wasatch Front Post Peak Observations

• Summary Points
• The 2006 summer can be considered fairly normal
  for purposes of infrastructure planning.
• Weather-normalized summer peaks are still growing
  at more than 4 per cent.
• Weather sensitivity of peak demand increased to
  60 MW/CDD (a net increase smaller than for past
  years).
• Direct load control (Cool Keeper) reduced annual
  peak demand growth rate by 0.2.

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Questions?