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Bradley NickellDirector of Transmission Planning

Incorporation of Water in Transmission PlanningApril 2, 2013

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• WECC Background• Transmission Expansion Planning• Incorporation of Water Information

RTEP UpdateToday’s Discussion

CaISO andCaliforniaTransmission Planning Group

CALIF

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• The Western Interconnection includes two Canadian provinces, a portion of Baja California Norte, Mexico, and all or part of the 14 Western stateso ~78 million peopleo ~229 GW of Generationo ~122 Thousand miles of Transmission lines

The Future of Electric Transmission in the WestWestern Interconnection Facts

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• Planning cooperation among Western Interconnection entitiesoCreate economic planning data setso Perform interconnection-wide transmission

expansion studieso Process consistent with applicable FERC Order

890 planning principles• Governed by the WECC Transmission

Expansion Planning Policy Committee (TEPPC)

Transmission Expansion PlanningHistory of Interconnection-wide planning in the West

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Transmission Expansion PlanningWhat are we planning for?

• Identify future infrastructure needs to 1. Serve the expected load reliably 2. Meet public policy directives3. Minimize cost and environmental impact

• Accomplished by1. Maintaining a database of planning data and models2. Facilitating an Interconnection-wide planning process3. Performing economic analysis 4. Preparing Interconnection-wide transmission plans

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Transmission Expansion Planning Organizational Framework

VGSIntegration

Topic BWGA WIRAB/CREPC

Public Policy$12.0M

WREZPhases 3 & 4

NationalLabs

Technical Assistance/Coordination

Topic AWECC/TEPPC

Interconnection-wide Planning$14.5M

ColumbiaGrid CA/MXCAISO West

Connect

SWAT

Other SPGNTTG

CCPG Sierra

SPGTransmission Planning

NGO Participation

State/ProvincialPolicy/Participation

LRS/LSEResource/Load Planning

Coordination

PCCReliability

UniversitiesTraining/Analysis

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Data – Tools – Models • Transmission Planners

and Developers• Generation Planners and

Developers• States and Provinces• Environmental groups

Analysis – Results – Plans • States and Provinces• Environmental groups• Advocacy Groups

TEPPC Stakeholders What do they value?

TEPPC’s diverse stakeholders value different products and processes

All Value the Information Sharing

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TEPPC Products – Analysis2022 expected generation resource mix

Conventional Hydro24%

Steam - Coal26%

Nuclear7%

Combined Cycle15%

Combustion Turbine1%

Cogeneration8%

Other1%

Biomass RPS 1%Geothermal 4%

Small Hydro RPS 1%Solar 3%

Wind 8%

WECC 2022 Energy Generation by Type

~60% use water for cooling

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TEPPC Products – Tools and ModelsLong-term Planning Tool

Capital Expansion model that co-optimizes generation and transmission expansion

Considers policy, cost, and environmental factors

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+ 166+ 92

+ 1318+ 1

+ 1360+ 599

+ 38

+767+ 18

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Biomass RPS

Solar CSP6

Solar PV

Wind

Resource Additions 12,000 GWh

Wind Solar PV Solar Thermal Small Hydro Geothermal Biomass RPS

TEPPC Products – Data Generation Resource Availability

Source: Map excerpt - WREZ Phase I report, Numbers – WECC

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TEPPC Products – DataWater Availability for Future Generation

Source: Sandia National Laboratory, Resource Constraint and Cost Maps for WECC 20-yr Planning

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TEPPC Products – Data Generation Heat Rates

Source Location Wet Cooling(Btu/kWh)

Dry Cooling(Btu/kWh)

Penalty(Btu/kWh)

APS AZ 6,473 7,311 838

Avista NW 6,722 6,856 134

Pacificorp UT 6,885 6,963 78

Xcel CO 6,947 7,143 196

CEC CA (Desert) 6,596 6,795 199

CEC CA (Coast) 6,573 6.596 23

Combined Cycle Heat Rate Comparison for Wet and Dry Cooling

Source: E3 Cost and Performance Review of Generation Technologies, Recommendations for WECC.

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Source: Sandia National Laboratory, Resource Constraint and Cost Maps for WECC 20-yr Planning

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2013 Interconnection-wide PlanPlan Organization

Background and Context Data and Assumptions

10-Year Horizon

20-Year HorizonPlan Summary

Tools and Models

WECC Path Reports Appendices

Sections are layered from broad to detailed

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• Water usage in Production Cost Modeling• Water cost• Additional comparisons

oDroughtoWater withdraw and consumption

Opportunities

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?Questions

Brad NickellDirector of Transmission PlanningWestern Electricity Coordinating Council155 North 400 West, Suite 200Salt Lake City, Utah 84103bnickell@wecc.biz