SPP.org 1. Draft Business as Usual Plan SPP.org 3 Wind - Business as Usual.

SPP.org 1

Draft Business as Usual Plan

SPP.org 3

Wind - Business as Usual

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Wind Requirement Per State

Futures 1 & 3 Wind in GW

State (in SPP)Existing &

Construction Wind Additional Wind Wind RequirementAR 0 0.2 0.4KS 1 2.6 2.4LA 0 0 0.4MO 0 0.7 1.1NE 0.4 1.4 1.1NM 0.2 0.2 0.2OK 1.6 3.6 3.3TX 1 2 1.7       

SPP Total 4.2 10.6 10.6

SPP.org

Transfers to Meet Requirements

5

6 intra-State Transfers

3 inter-State Transfers

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Satisfying the Future’s Requirement

• The expected wind energy must be achieved while maintaining voltage

Each state’s capacity and wind requirement modeled as a source-sink transfer

PV analysis

Transfer increased until near voltage collapse

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Satisfying the Future’s Requirement

• The expected wind energy must be achieved while maintaining thermal limits

Each state’s capacity and wind requirement modeled as a source-sink transfer

Limitations to the transfers due to 345 kV contingencies identified

Focuses upon regional issues rather than local issues

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Issue Areas & Corridors

• Voltage

No major issues encountered, up to expected business-as-usual levels

Results in-line with the latest Generation Interconnection Study

• Thermal

230 & 345 kV in the Texas panhandle

345 kV corridor in mid-Kansas

230 & 345 kV corridor in east Kansas

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Satisfying the Future’s Requirement

SPP system with NTC projects

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Limiting Corridors

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Least Cost Planning Approach

• Installation cost & design simplicity

Shortest distances

Lowest Cost

Existing termination points

Only 345 kV and above projects considered

Emphasis given to previously studied projects

SPP.org

Least Cost Plan Components

• Texas panhandle

Tolk – Potter Co

Potter Co – Stateline

• East Kansas

Jeffrey – Iatan

• Mid-Kansas

Spearville – Wichita

Wichita – Rose Hill

• Oklahoma

Stateline – Anadarko

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Business as Usual Least-Cost Plan

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Lease Cost Plan Meets RequirementsWith proposed projects, limits are eliminated

With proposed projects, limits are eliminated

SPP.org

Balanced PortfolioPriority ProjectsSTEP 345 kV projectsITP20 identified 345 kV lines

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Potential projects for further study

• Texas panhandle

Frio Draw – Tolk

Tolk – Tuco

Tuco – Potter Co.

• East Kansas

Jeffrey – Swissvale

Jeffrey – Auburn

• Mid-Kansas

Medicine Lodge – Viola

Viola - Wichita

Knoll – Summit

Spearville – Reno Co.

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Correlation to State of the Market Flowgates

Top 10 flowgates for July 2009 – July 2010

1Osage Switch - Canyon East (115) ftlo Bushland - Deaf Smith (230)

2Lake Road – Alabama (161) ftlo

Iatan to Stranger Creek (345)

3Randall County - Palo Duro (115)

ftlo Amarillo – Swisher (230)

4Lone Oak to Sardis (138) ftlo

Pittsburg – Valiant 345

5Shamrock XFR (115/69) ftlo

Tuco – Oklaunion (345)

6El Paso – Farber (138) ftlo Wichita – Woodring (345)

7Kelly – Seneca (115) ftlo E

Manhattan – Concordia (230)

8 Gentleman to Redwillow (345)

9Holcomb – Plymell Switch (115) ftlo Holcomb - Spearville (345)

10Mansfield – Int. Paper (138) ftlo

Dolet Hills – Swisher (345)

1 & 3

2

4

5

6

7

8

9

10

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Seams Integration

• Expectation of thermal limitations in other futures’ least cost designs

Nebraska – Iowa border near Omaha

Kansas City area

Ft. Smith area

East Texas

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Stakeholder Feedback

• Comments regarding study approach

• Alternative project suggestions

• Areas for development

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Futures 2 - 4

• Staff will begin development of least-cost plans for these three futures

• Same process as business as usual case

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Timeline for Futures 2 - 4

• August 2010

Least-cost plans for futures

• September 2010

Single, flexible plan for all futures

Cost-effective transmission analysis

• October 2010

Robustness evaluation

Limited reliability assessment

Ben RoubiqueLead Engineer, Technical Studies & Modeling501-614-3331broubique@spp.org