capturing the power of nature
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Iowa Stored Energy Park APPA Engineering and Operations April 16, 2007 Sam Shepard Electricity and Air Storage Enterprises. CAPTURING THE POWER OF NATURE. At Night In the northwest quadrant So -- How do we move the wind ?. The Wind blows mightily in Iowa. Project Summary - PowerPoint PPT PresentationTRANSCRIPT
Iowa Stored Energy Park
APPA Engineering and OperationsApril 16, 2007
Sam ShepardElectricity and Air Storage Enterprises
CAPTURING THE POWER OF NATURE
CAPTURING THE POWER OF NATURE
The Wind blows mightily in Iowa
▪At Night
▪In the northwest quadrant
▪So -- How do we move the wind ?
CAPTURING THE POWER OF NATURE
Presentation Overview
▪Project Summary▪Economics▪Technology▪Support▪Conclusions
Iowa Stored Energy Park
An aquifer based storage system Combustion turbine technology
Bio-derived fuel compatible
CAPTURING THE POWER OF NATURE
CAPTURING THE POWER OF NATURE
CAPTURING THE POWER OF NATURE
Three parts to a CAES system
▪Storage▪Generation▪Compression
CAPTURING THE POWER OF NATURE
Storage
▪Two existing CAES plants use mined salt caverns▪ISEP will use an aquifer▪Similar to natural gas storage techniques
CAPTURING THE POWER OF NATURE
Generation- Conventional Combustion Technology
▪Compression– Separate and Replace▪Combustor- similar to existing▪Expander-similar to existing
▪High and low pressure sections
CAPTURING THE POWER OF NATURE
Generation- Fuel
▪Two separate combustors▪High and Low Pressure
▪Investigating use of two fuels▪Natural gas▪Bio-derived fuels
CAPTURING THE POWER OF NATURE
Compression
▪Use existing high efficiency equipment▪Proven track record – Air Separation Industry
CAPTURING THE POWER OF NATURE
So how does CAES work with Wind ?
▪Increases off-peak system load▪Utilizes transmission when line ratings are high▪Provides voltage and frequency regulation
▪During either compression or generation
CAPTURING THE POWER OF NATURE
Funding to Date
▪State of Iowa▪US DOE▪Iowa municipal utilities
CAPTURING THE POWER OF NATURE
Status
▪Assessed all candidate sites in Iowa▪Completed seismic testing on best 2 sites▪Selected best site – west of Des Moines▪Building ownership / off-take portfolio▪Preparing to drill test wells and test fluid flow
CAPTURING THE POWER OF NATURE
Supporters
▪Iowa municipals▪Local residents▪US DOE
CAPTURING THE POWER OF NATURE
Summary
▪Preliminary analysis confirms feasibility▪Supports renewable energy needs▪Adaptation of proven technology▪Meets electric system technical/ market needs
Iowa Stored Energy Park
“It’s The Responsible Thing To Do”
Why The Economics Make Sense
CAPTURING THE POWER OF NATURE
CAPTURING THE POWER OF NATURE
Load Duration Curve
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0% 10% 20% 30% 40% 50% 60% 70% 80% 90%% Hours
Dem
and
MW
CAPTURING THE POWER OF NATURE
Comparative Cost $/MWh
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10
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Coal-PC CC SC CAES
Compression
Fuel + VOM
Fixed Costs
$/MWh
CAPTURING THE POWER OF NATURE
Cost Comparisons-Base EconomicsCost Comparisons-Base Economics
0
50
100
150
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250
10% 15% 20% 25% 30% 35% 40% 45% 50%Capacity Factor
$/MWh
Coal-PCCoal -IGCC
CCSC
CAES
CAPTURING THE POWER OF NATURE
Energy Generation
0
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0% 10% 20% 30% 40% 50% 60% 70% 80% 90%
% Hours
Diesel
GT
CAES
Wind
Coal 2
Coal 1ISEP
Demand
in
MW
CAPTURING THE POWER OF NATURE
Why ISEP?
▪Cheapest energy 10% < C.F. < 50%
▪Operational flexibility
▪Enhance value of wind energy
▪Protect against high gas prices
▪Protect against carbon tax
CAPTURING THE POWER OF NATURE
Technology
Conventional Combustion Turbine
▪Expander Output 103 MW▪Compressor Load -59 MW
▪Gross CT output 44 MW
CAPTURING THE POWER OF NATURE
CAES Machine
▪Expander Gross Output 103MW▪Air Flow optimization 9MW▪High Pressure expander 22MW
▪CAES Gross Output 134MW
CAPTURING THE POWER OF NATURE
Thermodynamics
▪CAES▪1 kWh out = 0.75 kWh in plus 4400 Btu fuel▪With wind driving compression
▪Total heat rate = 6900Btu/kWh (HHV)▪F Class CT
▪Simple cycle 10000Btu/kWh (HHV)▪Combined cycle 7700Btu/kWh (HHV)
CAPTURING THE POWER OF NATURE
ISEP — A Great Fit For Algona▪Proven source of renewable energy
▪Control costs by owning/investing in generation source
▪Good for the environment
▪Mix of generation sources helps risk mitigation
▪Consumers/owners want us to invest in renewable energy
CAPTURING THE POWER OF NATURE
ISEP — Meeting Waverly’s Renewable Goals
▪Owned wind generation since 1991
▪Want storage from ISEP
▪Renewable goal: 20% by 2020
▪Intermediate capacity needs
▪ISEP helps Waverly meet its goals
CAPTURING THE POWER OF NATURE
Why The Department Of Energy Backs ISEP
▪Increased demand anticipated
▪Federal mandates likely
▪Trends, challenges, and needs point to ISEP
CAPTURING THE POWER OF NATURE
GROWTH IN
ENERGY CONSUM
PTION
ECOLOGICAL CONCE
RN
DIGITIZATION OF SOCIETY TRANSMI
SSION CONGES
TION
RENEWABLE
MANDATES
POWER OUTAGE
S
ELECTRICAL ENERGY STORAGE
INCREASED
CAPACITY
FACTOR
DISPATCHABILITY OF RENEWABLES
HIGH POWER QUALITY
SOLU
TION
TR
END
S
CH
ALLEN
GES
NEED
S
Iowa Stored Energy Park
“It’s The Responsible Thing To Do”
What Energy Customers Say…
CAPTURING THE POWER OF NATURE
CAPTURING THE POWER OF NATURE
We’ve Done Our Homework
▪Talked to 600 people
▪All lived in Dallas County
▪A strong majority support the idea
CAPTURING THE POWER OF NATURE
Why Dallas County Residents Like ISEP:
▪Helps reduce/control MY household energy costs
▪Uses a resource (wind) not being used enough
▪Could decrease dependency on foreign energy
▪Could decrease dependency on fossil fuels
▪Is a clean and healthy source of energy
Iowa Stored Energy Park
ISEP Funding So Far…
Leveraged $800,000 Municipal Funds
Received $3,500,000 Federal Funds
CAPTURING THE POWER OF NATURE
CAPTURING THE POWER OF NATURE
Moving Forward
▪Leaving Research Phase▪Entering Development Phase
Research Development Construction ending 2007 -2009 2009 - 2011
CAPTURING THE POWER OF NATURE
Conclusions
▪ISEP Answers wind’s shortcomings▪Diversifies the portfolio▪Helps meet intermediate capacity needs▪Helps manage coming renewable mandates
Iowa Stored Energy Park
For more information:
Kent Holst ISEP Development Director319.239.8968
[email protected] www.isepa.com
CAPTURING THE POWER OF NATURE