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Conservation:An Alternative Energy Source for Local Communities
Ted Coates, Power Manager
September 20, 2008
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Tacoma Power BackgroundTacoma Power Background
Tacoma Power established in 1893 with public purchase of Tacoma Light & Water Company
Number of Customers: 162,587
Number of Employees: 800
Service Territory: approximately 180 square miles
Governed by five member Public Utility Board
Average Cost of Power to Customers: approximately 6.19 cents
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2006 Sources of Energy2006 Sources of Energy
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0
100
200
300
400
500
600
700
800
900
2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027
aM
W
Owned Hydro Resources: Critical Water
Other Contracts (Priest & SCBID)
BPA
Forecasted Load
(150)
(100)
(50)
-
50
100
2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027
aMW
Critical Water Surplus/Deficit
Projected Load Growth: Approximately 1.0% per year for 20 year forecast
Customer Load ForecastCustomer Load Forecast
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Key Objective from our 2004 IRPEvaluate Conservation Acquisition OpportunitiesKey Objective from our 2004 IRPEvaluate Conservation Acquisition Opportunities
Develop a Conservation Potential Assessment (CPA) to identify available conservation acquisition opportunities
The CPA is a road map that estimates the type, amount, and cost of conservation opportunities within the Tacoma Power service area
Tacoma Power retained a consulting firm, Quantec to conduct the CPA
Completed in January 2007, the CPA estimates about 54 aMW of achievable conservation over the next 10 years
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I-937 – The Energy Independence ActI-937 – The Energy Independence Act
Passed by public vote in 2006
With regard to conservation, this new law requires Washington utilities to acquire all “cost-effective” conservation (starting in 2010)
The Law specifies administrative penalties to be assessed for shortfalls - $50 per megawatt hour (2006 dollars subject to inflation)
As a result of this law, the 54 aMW of achievable conservation over 10 years identified in the CPA has been transformed into an enforceable annual conservation target of 5.4 aMW
Tacoma Power has begun an update to that CPA which may change the conservation target
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Effect of Conservation Acquisitions on Tacoma Power’s Load and Resource BalanceEffect of Conservation Acquisitions on Tacoma Power’s Load and Resource Balance
(100)
(50)
-
50
100
2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027
aMW
Critical Water Surplus/Deficit
0
100
200
300
400
500
600
700
800
900
2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027
aM
W
Owned Hydro Resources: Critical Water
Other Contracts (Priest & SCBID)
BPA
Forecasted Load
Forecasted Load after Conservation Acquisitions
Conservation Acquisition
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How Will We Achieve This Energy Conservation?How Will We Achieve This Energy Conservation?
Energy Conservation is the ability to achieve the same amount of work with less energy
It is not shivering in the dark, or shuttering businesses
Guiding principles: Meet customer needs
Meet cost effectiveness tests
Be consistent with neighboring utilities PSE, SCL and SnoPUD
Maximize use of trade allies
Program Challenges: Infrastructure to deliver conservation
Competition for trade allies, equipment and qualified staff
Economic conditions may impact conservation results
Customer and contractor acceptance of new technologies
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How Will We Achieve This Energy Conservation?How Will We Achieve This Energy Conservation?
Residential Example
Approximately 141,400 Residential accounts:
86,400 Single Family HomesRoughly 30,000 are electrically heated
2,600 Multi-Family Buildings30,400 multi-family unitsLarge majority electrically heated
Residential date from: County Assessor’s office Customer Accounts
building type, age, etc.2005 residential survey results
presence of electric heat Previous Conservation Work2000 Census demographics
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Residential Customer ResearchResidential Customer Research
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Proposed ProgramsResidentialProposed ProgramsResidential
Energy Efficient Showerheads & Aerators High Efficiency Water Heaters Program Residential Lighting Program Residential New Construction
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Proposed ProgramsResidentialProposed ProgramsResidential
Weatherization (Low Income & Non Low Income) High Efficiency Heat Pump Program Appliances
Energy Star Washwise Refrigerator Decommissioning
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Proposed ProgramsCommercial & IndustrialProposed ProgramsCommercial & Industrial
Expanded Bright Rebates Program (lighting)
Efficiency Options Program (custom projects)
Energy Smart Grocer Program (contracted delivery)
Fort Lewis & McChord Conservation Project
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Proposed ProgramsCommercial & IndustrialProposed ProgramsCommercial & Industrial
Equipment Rebates Program (VFDs, motors, HVAC)
Enhanced Compressed Air Program New Construction Program Building Retro-Commissioning Program Resource Conservation Manager
Program
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Implications for Local Communities?Implications for Local Communities?
First, utilities will aggressively promote conservation to their customers.
It is important for local governments to support these efforts.
Second, Conservation costs money so rates are likely to rise.However, customer bills should be less affected due to the energy
savings.
Moreover, increased conservation will reduce the need for new and expensive generating resources and expanded “transmission and distribution” facilities.
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