May 22-23, 2008 ACC BTA Workshop May 22-23, 2008 Regional Renewable Energy Transmission Initiatives Laurie Woodall K.R. Saline and Associates, PLC Arizona Corporation Commission 5 th Biennial Transmission Assessment Docket E-00000D-07-0376
Dec 24, 2015
May 22-23, 2008
ACC BTA Workshop May 22-23, 2008
Regional Renewable Energy Transmission Initiatives
Laurie WoodallK.R. Saline and Associates, PLC
Arizona Corporation Commission 5th Biennial Transmission Assessment
Docket E-00000D-07-0376
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Overview
Increasing public policy interest in renewable development
Need for more transmission in evidence
Specific initiatives addressing integration of renewable energy sources into system
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Public PolicyInterest in Renewables
Climate change / greenhouse gas concerns
Regulatory requirements-renewable portfolio standards
Diversity of fuel sources for growing load
Potential for federal regulation of conventional fuel sources - “Carbon Tax”
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Need for Transmission
Growing loads, transmission limitations
Renewables may be remotely located without access to available transmission
Financing of transmission can be expensive and difficult for smaller intermittent renewable generators
Some studies, governmental/NGO private initiatives to address these issues
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WestConnect PlanningBiennial Long Range Study
A Westconnect–wide long range, conceptual study of transmission improvements needed to integrate renewables in the 10th year and beyond
Study will include findings of NREL wind/solar integration study, Colorado Resource Energy Zones Study, New Mexico collector study, and SWAT Renewable Task Force
Complete initial study in 2009
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Other Initiatives WGA West-wide Renewable Energy Zones
Regional initiative to identify best renewable resources and designate Renewable Energy Zones, based upon commercial potential and cost-performed by consultant
Inclusive stakeholder process to establish criteria to designate and validate zones for development
Develop conceptual transmission plans through WECC and subregional planning groups to deliver from highest ranking zones
Report to WGA re: commercial obstacles Identify options for interstate cooperation of planning and
permittingKick off meeting May 28, 2008 in Salt Lake City
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California Renewable Energy Transmission Initiative (“RETI”)
PG&E, SCE, and SDG&E filed renewable transmission reports with CPUC in September 2007
RETI formed with collaborating agencies and entities: CPUC, CEC, CAISO, Utilities, and other stakeholders
Purpose - identify transmission necessary for California to achieve its renewable energy goals in cost-effective and environmentally sensitive manner. Final B&V report 5/16/08
Study area includes CA, BC,WA, NV, OR, AZ and Baja Norte
Phases: Identify zones, identify conceptual transmission, assist in development of detailed plans
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Colorado Initiatives
Clean Energy Development Authority (“CEDA”) to develop three year plan, work with Colorado PUC & Colorado Coordinated Planning Group (“CCPG”)
SB 07-100 requires each regulated utility to:– Designate Resource Energy Zones, – Develop needed transmission plans, – Encourage locally owned renewables, and – Submit plans and CPCN applications
Utilities working with CCPG in phases: – April-July transmission planning groups, – November issue study plans, – Nov-Jan 09 prepare CPCN studies, – March 09 file CPCN applications, – Oct 09 file transmission plans
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Colorado Resource Energy Zones
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Nevada’s Initiative (“RETAAC”) Renewable Energy Transmission Access Authority
Created by Executive Order of the GovernorRPS - Nevada is a net importerPurpose:
– Identify and rank commercially developable locations for renewable energy
– Assess existing and planned transmission access to these resources
– Make recommendations for additional transmission
Phase 1 Report identified REZ, transmission required for access to grid, recommended transmission lines
Future phases will include more detailed environmental review
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NevadaRETAAC
Plan Circles/Ovals
Identify Renewable Energy Zones
Conceptual Transmission Plan Shown By Brown / Purple Lines
Per NPC/SPPC 5/19/08 SWAT presentation
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New Mexico’s Initiatives
SWAT New Mexico Study Group performed 2007 Cluster Study of Potential Wind Projects in Central NM
2007 Legislature created the New Mexico Renewable Energy Transmission Authority (RETA)
RETA’s Purpose:– Orchestrate multistate, multi-electric utility negotiations to
facilitate development of NM transmission infrastructure for renewable energy development and export
– Focus is on electric system transmission infrastructure planning, financing, and implementation
– A onetime only $1 million general startup fund authorized
2008 SWAT Renewable Task Force Study Participant
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Stage 5+Integration with High Plains Express
WillardWillardWillard
Ft. CraigFt. CraigFt. Craig
BABABA
BelenBelenBelen
GladstoneGladstoneGladstone
VL TapVL TapVL Tap
Total WindGuadalupe/Willard/Duran:
> 4000 MW (?)
• Build HPX 500 kV lines (may not need two circuits from Guadalupe to Ft Craig)
• Install 500/230 kV transformer at Gladstone• Install 500/345 kV transformer at Guadalupe• Install 500/345 kV transformer Ft Craig• Install 500/345 kV transformer at Duran
100
200
DuranDuranDuran
>1000
250
>1000
150
400
Existing 345 kV line
New station
Existing station
Proposed wind project
Existing or committed wind project
Existing 115 kV line
New 345 kV line
1200
NM Wind Collector System Integrated with HPX
● Conceptual 345 kV Collector System in Central NM
● Cluster Study performed by PNM
Per 2007 SWAT NM Study Group
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Sources
1. Nevada RETAAC: http://gov.state.nv.us/Energy/FinalReport.htm
2. National Renewable Energy Lab Resource Center http://www.nrel.gov/renewable_resources/
3. New Mexico Renewable Energy Transmission Authority: http://www.emnrd.state.nm.us/MAIN/RETA2.htm
4. US Dept of Energy Efficiency and Renewable Energy: http://www.eere.energy.gov/
5. WestConnect: http://www.westconnect.com/
6. AZ Climate Change: http://www.azclimatechange.gov/index.html
7. California RETI: http://www.energy.ca.gov/reti/index.html
8. Colorado: http://www.colorado.gov/energy/utilities/clean-energy-development-authority.asp
9. WGA: http://www.westgov.org/wga/initiatives/wrez/index.htm
10. Clean Electric Resource Strategy: http://www.westernresourceadvocates.org/media/pdf/Clean%20Electric%20Energy%20Strategy%20for%20Arizona.pdf
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Sources (Continued)
11. TRANSMISSION RANKING COST REPORT OF SAN DIEGO GAS & ELECTRIC COMPANY (U 902 E) FOR RENEWABLE PORTFOLIO STANDARD PROCUREMENT: http://www.sdge.com/regulatory/tariff/svc%20TRCR%20Filing.pdf
12. TRANSMISSION RANKING COST REPORT OF PACIFIC GAS AND ELECTRIC (U 902 E) FOR RENEWABLE PORTFOLIO STANDARD PROCUREMENT: http://www.pge.com/includes/docs/pdfs/b2b/energysupply/wholesaleelectricsuppliersolicitation/renewableportfoliostdsori-ii_other-doc_pge_20070907-01.pdf
13. TRANSMISSION RANKING COST REPORT OF EDISON ELECTRIC COMPANY (U 902 E) FOR RENEWABLE PORTFOLIO STANDARD PROCUREMENT: http://www.sce.com/nrc/rfp/2008_RPS_Appendix_D_SCE_TRCR.pdf