Wild Horse Solar Photovoltaic Project Steven J. St.Clair Manager - - PowerPoint PPT Presentation

November 19, 2009 Steven J. St.Clair

Manager – Renewable Assets Phone: 425-462-3057 Email: steven.stclair@pse.com

Wild Horse Solar Photovoltaic Project

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Agenda

• Introduction
• PSE Renewable Energy Facilities
• Wild Horse Solar Facility

Considerations Request for Proposals Evaluation Construction Performance Solar Advisor Model Studies

• Conclusions

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PSE, a Washington Company

• State’s oldest and largest utility
• 1 million electric customers
• More than 700,000 natural gas

customers

• Service territory stretches across 11

counties

• Subsidary of Puget Energy

(NYSE:PSD)

• 2-3% customer growth annually

4

Hopkins Ridge Wind Project

Key Dates:

• Letter of Intent

Oct 29, 2004

• PSE Board Approval

Jan 11, 2005

• Closing / Notice to Proceed

Mar 11, 2005

• Commercial Operations Date Nov 22, 2005
• Developed by Renewable Energy

Systems

• All-in cost of $200 million
• 157 MW
• 35% capacity factor
• Vestas Turbines
• 1.8 MW Capacity
• 220 feet tall at hub
• 320 feet to tip of blade

Project Site

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Wild Horse Wind Project

• Developed by Horizon Wind
• ≈ 11 miles east of Ellensburg in Kittitas

County, Washington

• Shrub steppe habitat - primarily grazing land
• ≈ 8-mile 230kV transmission line to PSE IP

Line at new Wind Ridge Substation

• 229 + 44 = 273 MW
• Private land owned by PSE
• ≈ 5,400 acres (≈ 87 WTGs)
• ≈ 1,280 acres (site access)
• State land leased by PSE
• DNR ≈ 2,560 acres (≈ 31 WTGs)
• WDFW ≈ 640 acres (≈ 9 WTGs)
• Five (5) transmission leases
• All-in cost of $380 million
• Commercial Operation Dec 22, 2006

Project Site

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Why Build a Solar Project?

To develop the Solar industry in Washington and the Pacific Northwest

Triple the size of next largest NW solar project Grow Washington solar manufacturing capability Room for another 500 kW

To understand how well solar works in our region and at a wind farm

Nation’s first utility scale wind-solar project Study power profile differences

Educate the State and region about solar energy Double I-937 credit

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US Photovoltaic Solar Resource

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Wild Horse Solar Project

Quarry Site – 90% of the panels. Already disturbed land. Wild Horse Wind Farm – 127 Turbines Visitor’s Center Site – 10% of the panels

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Benefits of Wild Horse Site

• Great solar resource

Same sun as Houston

• Synergies with wind farm

Owned land Existing transmission Personnel already at site

• Potential synergy with future

wind farms

• Good access for educational

purposes

• Reduce/Backup station service

loads

• Room for another 500 kW

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Wild Horse Solar RFP

• Released December 2006
• Unrestricted bid list
• Extensive technical specifications
• Requested flat PV, concentrating,

and thermal systems

• 500 kW with option for an additional

500 kW

• Required 5-year warranty on system

and 25-year on PV modules

• Received 12 conforming proposals

and evaluated on basis of cost, performance, design maturity, and supplier experience

Download: http://www.pse.com/energyEnvironment/ energysupply/Pages/solarRFP.aspx

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Project Overview

• 500 kW solar facility (300 homes when the sun is shining)
• Interconnected to the 34.5 kV wind collection system
• $4.3 million in capital cost
• Selected photovoltaic solar technology
• ~ 5 acre footprint

Dec Jan Feb M ar Apr M ay Jun Jul Aug Sep O ct Nov Dec

RFP & Bidding Evaluation Selection (If Any) & Negotiations Design & Procurement Construction Substantial Completion Final Completion

2007

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Basic System Layout

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Commercial Solar Modules

• Convert solar light energy to

DC electrical energy

• Poly-Crystalline
• Textured cell surface to

increase light capture

• Sharp uses anodized

aluminum frame for strength

• Silicon Energy uses glass

composite construction

• Over 12% efficiency
• 40°F to 190°F operating

temperature range

Sharp USA 187 Watts per module (450 kW total) Silicon Energy 170 Watts per module (50 kW total)

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Panel Interconnection Architecture

Panel I nterconnection

• Strings of 14 modules make a

circuit, ~ 600 VDC

• Circuits joined in combiner

boxes and feed to inverter

• Inverter converts DC power to

AC power

• Voltage increased to 34.5 kV

at padmount utility transformer

• Interconnect to wind turbine

electrical collection system

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Satcon 50 kW and 500 kW Inverters

• Controls all functions of solar

electric system

• Extracts power from PV array

at most efficient point (Maximum Power Point Tracking)

• Converts power from direct

current (DC) to alternating current (AC)

• Monitors the utility grid &

disconnects if out of acceptable Voltage or Frequency range

• Provides production data

stream to plant data acquisition system

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The array foundation is almost complete

Wild Horse Solar Project

500 kW, Washington, Phase I - October 2007

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Setting panels in place

Wild Horse Solar Project

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The First Array at 95% complete

Wild Horse Solar Project

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The First Array

Wild Horse Solar Project

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Wild Horse Solar Project

Aerial view of quarry site

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Wild Horse Solar Project

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Wild Horse Solar Performance

http://siteapp.fatspaniel.net/siteapp/detailView.jsf?eid=72046

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Predicted vs. Actual Generation

Wild Horse Solar Performance

10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 90,000 100,000

O c t

• 7

D e c

• 7

F e b

• 8

A p r

• 8

J u n

• 8

A u g

• 8

O c t

• 8

D e c

• 8

F e b

• 9

A p r

• 9

J u n

• 9

A u g

• 9

O c t

• 9

Energy (kWh)

Actual Expected

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Is Solar Cost-Competitive?

• Solar is currently much like wind was

in the 1990s

• Positions PSE and our customers as

solar becomes more cost-competitive

• Assist growth of the in-state solar

manufacturing industry

• Generates less than 1/7 of one wind

turbine

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NREL: Solar Advisor Model

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NREL: Solar Advisor Model

• Easy to Use interface with detailed analysis capabilities
• Model performance, costs and financing consistently across

technologies for appropriate comparisons.

Concentrating solar power (CSP) Photovoltaics (PV)

• Implementation of best performance models (Sandia PV module,

NREL parabolic trough model, Sandia Inverter, 5-Parameter PV module via UW-Madison and CEC)

• Siting Tool (especially with detailed Google-Maps solar satellite data
• Policy, Markets and Technology Analysis

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Solar Module Modeling

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Capital Cost Modeling

• Adjusts with varying plant size
• Cost variables change with

different markets

• Residential
• Commercial (Owned, 3rd Party Owner)
• Utility (IOU, IPP)
• Relatively High Level
• Able to link to complex cost

model spreadsheets in Excel

• Send variables from SAM to

Excel

• Capture “named ranges” from

Excel back into SAM

• Excel linkage works with

parametric runs

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Solar Advisor Model

Download: www.nrel.gov/analysis/sam/download.html

• Models solar

performance, cost, finance, and incentives

• Performance

models for PV, thermal trough, and concentrating PV

• Includes tracking

and fixed systems

• Models for

residential, commercial, & utility applications

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Annual Energy Production

31 28 31 30 31 30 31 31 30 31 30 31 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 0:00

• 1:00
• 2:00
• 3:00
• 4:00
• 0.0

0.0

• 5:00
• 0.0

0.5 1.2 0.4 0.0

• 6:00
• 0.2

11.2 42.3 47.5 28.3 10.0 4.0 0.4

• 7:00

0.0 3.2 49.1 94.5 121.0 125.3 119.5 110.4 97.1 63.1 9.2 0.0 8:00 29.9 68.8 139.8 168.5 193.2 201.5 199.4 194.2 184.5 140.1 64.2 29.3 9:00 93.8 150.8 202.6 219.5 245.6 256.5 249.5 256.1 246.2 215.0 123.3 83.9 10:00 135.7 196.2 250.9 261.2 277.1 293.0 295.4 296.8 290.9 250.6 150.3 120.3 11:00 152.4 228.6 275.1 280.7 288.8 311.0 311.7 317.3 300.5 261.1 163.9 150.7 12:00 150.1 228.4 272.2 267.9 295.0 293.2 315.9 314.1 307.8 261.7 156.3 146.1 13:00 140.6 209.0 255.1 250.4 273.6 285.8 298.1 286.5 282.3 223.2 126.7 139.4 14:00 110.2 165.7 219.9 212.0 241.9 253.7 258.6 245.4 228.9 171.2 81.2 99.7 15:00 50.6 102.4 156.6 151.8 180.7 186.8 199.7 185.5 167.3 100.6 32.0 40.9 16:00 4.4 33.2 78.5 86.5 112.3 125.0 133.2 114.4 80.6 25.5 0.2 0.0 17:00

• 0.0

2.6 11.4 39.4 51.5 55.2 32.2 2.8 0.0

• 18:00
• 0.0

0.4 1.3 0.8 0.1

• 19:00
• 0.0

0.0 0.0

• 20:00
• 21:00
• 22:00
• 23:00
• Expected Energy

The "12x24" expected energy should be made at a "P50" confidence level for the average lifetime output

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Benefits of Solar Energy

• Abundant Fuel Supply (largely untapped)
• Reliable Source of Energy
• Supplies Peak Power Demand
• Low Maintenance
• Displaces Fossil Fuels
• Clean Energy
• No Greenhouse Gas
• Rebates and Tax Benefits
• Creates Economic Growth
• Saves Money (depending on where you live)

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PSE Renewable Energy Incentives

Renewable Energy Advantage Program (REAP)

Wind, Solar, Anaerobic Digester system Rebate of 12¢ to 54¢ / KWh $2,000 rebate per year (thru June 2014)

Net Metering

Hydro, Solar, Wind, Biogas Less than 100 KW system Offsets your own consumption Can accumulate credit for heavy use months Can’t generate more than you consume annually

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Net metering grows . . . and grows

2 7 12 18 24 44 57 113 227 333 520 819 1,327

• 200

400 600 800 1,000 1,200 1,400 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011

Projection: 12,000 systems; 42,000 kW

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Questions?

• Fun Energy Facts

Fun Energy Facts

• The world will consume

The world will consume 80 million barrels of oil 80 million barrels of oil today today

• The world consumes 2

The world consumes 2 barrels of oil for every barrels of oil for every barrel discovered barrel discovered

• There are 194 countries in

There are 194 countries in the world the world – – none are none are energy independent energy independent

• The average US electric

The average US electric customer uses about customer uses about 11,500 kWh each year 11,500 kWh each year – – nine times the average for nine times the average for the rest of the world the rest of the world

• The United States imports

The United States imports more than nine million more than nine million barrels of crude oil per barrels of crude oil per day day

• A decrease of only 1% in

A decrease of only 1% in industrial energy use would industrial energy use would save the equivalent of about save the equivalent of about 55 million barrels of oil per 55 million barrels of oil per year, worth about $4 billion year, worth about $4 billion

• Residential appliances,

Residential appliances, including heating and including heating and cooling equipment and cooling equipment and water heaters, consume water heaters, consume 90% of all energy used in 90% of all energy used in the U.S. residential sector the U.S. residential sector

• For the 2 billion people

For the 2 billion people without access to without access to electricity, it would be electricity, it would be cheaper to install solar cheaper to install solar panels than to extend the panels than to extend the electrical grid electrical grid