wholesale power supply socorro electric cooperative,...
TRANSCRIPT
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Wholesale Power Supply Socorro Electric Cooperative, Inc.
Rob Wolaver, P.E.Senior Manager, Energy Resources
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Outline
Tri-State Background Tri-State Generation Mix Power Delivery Wholesale Electricity Markets
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Tri-State Background
Founded in 1952. 65th Anniversary Year Not-for-profit, cooperative wholesale power supplier
owned by the 43 distribution cooperatives it serves Diverse: Residential, Industrial, Irrigation, Tourism
Serve >1.5 Million Customers (Rural & lower income) Generation & Purchased Power Portfolio 4,000 MW including coal, gas, oil, wind, solar & hydro
Transmission: > 5,500 Miles of 115, 230 & 345 kV Employees: 1,585
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Tri-State 2016 Financial Data
Revenue: $1.4 Billion Assets: $4.9 Billion Liabilities: $3.8 Billion Equity: $1.1 Billion
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2016 Average Retail Rates
*Data for San Miguel Power Association is from 2015
0
2
4
6
8
10
12
14
Cen
ts /
kWh
Source: FERC Form 1, Utility Annual Reports, and RUS Form
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Coal43%
Natural Gas19%
Oil2%
Basin12%
Renewable24%
2016 Capacity (%)
Coal50%
Natural Gas2%
Basin9%
Renewable 27%
Oil, <1% Market Purchases
12%
2016 Energy As a % of Gross Member Sales
2016 Tri-State Resource Mix
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July 25, 2017 Resource Mix
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Growth of Tri-State and Member Renewable Generation (Excludes WAPA Hydropower)
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Growth in Tri-State Wind and Solar Energy Generation (GWH/Yr)
0
200
400
600
800
1,000
1,200
1,400
1,600
1,800
2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
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Alta Luna Solar Project
25 MWac Single-axis
tracking Northeast of
Deming, NM Completed
January 2017 25 year PPA Annual output will
serve approx. 8,000 homes
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Renewable Integration
Wind and solar need to be supplemented and “backed-up” with conventional hydro, coal and gas generation
Today, you cannot realistically replace coal 1:1 with intermittent renewables
Battery or other storage technology could change this situation
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Coal Retirements & Renewables
Three Announced Coal Unit Retirements
Employee and community transition
Cost Incremental cost of baseload generation is cheaper
than variable renewables Accelerated depreciation
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Tri-State Federal Hydropower
Two Purchased Power Agreements Colorado River Storage Projects
Glen Canyon, Blue Mesa, Flaming Gorge, Elephant Butte Loveland Area Projects
Mount Elbert, Yellowtail, Flatiron, Guernsey, Seminoe
2016 Data $82.4 Million Power Purchase Expense Approximately 600 MW, 2,350 GWH/Yr Served 15% of Tri-State Member Load
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Renewable Generation Pricing Trends
Price of new renewable generation is heavily impacted by federal tax credits
“Utility-Scale” Projects
Transmission is a major issue for wind
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Wholesale Power Delivery
Generation, Transmission, Metering, Billing
Necessary Contracts and Structures
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Generation / Load Balance
Generation must balance customer load demand Electricity cannot be stored at grid-level volumes Power is scheduled Deliveries are coordinated among generators,
transmission providers and load-serving entities 24 x 7 Operation Prepare for routine and upset conditions
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Rules of the Road
Federal Energy Regulatory Commission (FERC) North American Electric Reliability Council (NERC) Western Electricity Coordinating Council (WECC) New Mexico Public Regulation Commission (PRC) Balancing Authority (Public Service Company of New Mexico)
National Electric Safety Code (NESC)
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Power Scheduling 24/7 Staffing Technology Software Communications
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Necessary Contracts and Structures
Power Supply Power Purchase Agreement Generation Ownership
Transmission Network Integration Transmission Service Agreement
(NITSA) Ownership
Load Serving Entity Cooperative, Municipal, Investor-Owned Utility
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Power Purchase Agreements
Typical Terms and Conditions Term and Termination Price Firmness Credit Provisions / Security / Triggers Point of Delivery / Point of Receipt Load Forecasting Metering Dispute Resolution Rollover / Extension Default and Remedies
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Transmission Service Contracts
Application for Service Identify Load and Generators
Study Process to Establish Availability or Required Upgrades
Establish NITSA Establish Network Operating Agreement Ancillary Services Voltage Support, Reserves, System Dispatch, Energy
Imbalance, Regulation and Frequency Response
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Natural Gas (Left Axis, Blue Line, $/MMBTU)Wholesale Electricity (Right Axis, Green Bars $/MWH)
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Sample Economics of Alternate Supply
Service Estimated Cost$/MWh
Market Price of Block Power (PV ATC 2018-23) $30
Shaped Power + Ancillary Services $5
Upstream Transmission (El Paso $5 or PNM $7.50) $6
Tri-State Transmission $9
Socorro Distribution (?) $5
Supplier Margin $5
Estimated Delivered Cost To Socorro Meter $60
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Distribution Functions
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Equipment Procurement, Warehousing, Spares Replacements
TransformersWireMetersPoles
Line Crews – Training, Specialized EquipmentMetering, Billing, Collections, Budgeting, AccountingRate-Making, PRC Filings, ReportingEmergency ResponseMaintenance, Construction, Interconnections, ROW
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Looking to the Future
Organized Markets Southwest Power Pool (SPP) California Independent System Operator (CALISO)
Distributed Generation
Energy Storage
Carbon Regulation
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