Trey Acteson

Report
Southeast Alaska Power Agency
NWHA 2014 Annual Conference – Seattle, WA
Trey Acteson, CEO
SEAPA’s Mission: To provide the lowest wholesale power rate consistent with sound utility
planning and business practices. We exist for the long-term benefit of our member utilities
and the rate payers, providing unified regional leadership for project development and
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prudent management of our interconnected power system.
Southeast Alaska
Regional Profile:
Extends 500 miles Metlakatla to Yakutat
35,000 sq. miles
Land ownership dominated by Fed 95%
Mostly Inventoried Roadless
18,500 miles of shoreline
34 Communities
• 28 < 1000 people
• 12 < 100 people
S.E. Population 75,000
• 33k Juneau
• 20k SEAPA Interconnected Region
• 9k Sitka
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Who is SEAPA?
Southeast Alaska Power Agency
• Regional Generation & Transmission Joint Action Agency
• SEAPA owns the Tyee and Swan Lake Hydroelectric Projects, providing wholesale power
and energy to the Municipalities of Ketchikan, Wrangell and Petersburg
• SEAPA owns the transmission lines linking those communities together – Approximately
175 miles of transmission, including 14 miles of submarine cable
• Evolved from the Four Dam Power Pool
• SEAPA’s hydro projects were originally built by the State in early 1980’s and later purchased
• Provide bundled services (Scheduling, Planning, Engineering, O&M, Water Mgmt., etc.)
• Facilitate regional project development
SEAPA Control Area
2011
Meters
PSG2112
WRG- 1979
KTN7443
Totals: 11,534
2012
Load/MWh
55,404
38,509
181,932
275,845 MWh
Petersburg
PSG
Wrangell
Tyee
Note: Only 12,000 meters to
spread cost of new development
WRG
KTN
Swan
SEAPA Generation
Swan
Lake
Tyee
Lake
25 MVA
77,000 MWh
25 MVA
130,000 MWh
Ketchikan
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Regional Hydrosite Evaluation
Purpose: Enhance S. E. Alaska Integrated
Resource Plan (SEIRP)
• Catalog potential hydropower sites
• Establish desired data set for evaluation
• Conduct field studies to fill SEIRP gaps
• Raise base level of knowledge
• Create ranking criteria/methodology
• Establish regional database for decision
makers
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Hydrosite Evaluation – Focus Area
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Challenges
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Over 60 unique sites
Limited funding 1.7 million
Remote logistics
Weather
Safety
Balancing confidentiality with mission
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Project Approach
Step 1 - Select project manager (MCM)
Step 2 – Define overall objectives (Calibration)
– Review Preliminary Assessment (SEIRP)
– Perform Gap Analysis
Step 3 – Project definition
– Data collection objectives
Step 4 – Reconnaissance
Step 5 – Analysis & Recommendations
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Status
Inspection criteria defined
Project library structure created
Gap analysis of SEIRP
Reconnaissance plan developed
Field team deployed to Annette Island in 2013 to evaluate
energy and capacity content capabilities of entire island
• Basin hydrology assessment (inflow prediction)
• Flood estimation using USGS regression analysis
• Stream gauge installation at two sites
• Intake/Impoundment surveys
• Bathymetric survey (depth) and side band LIDAR
(storage) assessment
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Process Refinement
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Best to deploy hydro guru on initial recon
Cluster “like” sites to minimize costs
Cleary define objective for each site
Clearly define technical teams and equipment
Explore lower-tech data collection options
Ensure adequate redundancy
Expect delays – Be flexible
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Photo Tour
• Blue Lake – Sitka
• Whitman Lake – Ketchikan
• Swan Lake – Near Ketchikan
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Blue Lake - Sitka
Raise dam 83’
New Powerhouse (3) 5.7MW
turbines
New 1 MW Fish Valve Unit
Decommission (4) turbine
generators
New intake structure and gate
house
New surge chamber
Penstock and tunnel upgrades
Additional 34,500 MWH firm
energy (27%)
Cost: $142M + 15M Diesel Project
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More Blue Lake
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Whitman Lake – Ketchikan (KPU)
Dam constructed in 1927
2 - 42” penstocks
4.6 MW output
Supplies hatchery
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SEAPA’s Swan Lake Dam
174’ High & 430’ long at crest. Reservoir capacity 86,000 acre-feet.
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Swan Lake Reservoir Expansion Project
Cost: $13,391,869
BENEFITS:
• Displaces up to 800,000
gallons of diesel annually
($2.75 million)
• Adds 25% more active
storage
• Maximizes use of existing
infrastructure
• Shifts spill to winter
generation
• Compliments other projects
• Adds operational flexibility
• Timed with load growth
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Swan Lake Status
• FERC Board of Consultants assembled
• 30% Design Firm under contract
• Non-capacity license amendment to be filed in
April 2014
• Actively pursuing State grant funding
• Construction 2015/16
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Questions?
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