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Copyright © 2009 Ausra, Inc. Boosting Existing Gas and Coal Fired Generation with Solar Energy Erik Ellis, Ausra, Inc. VP, Commercial Operations AzCPA Energy Conference March 20 th , 2009
Copyright © 2009 Ausra, Inc.
Boosting Existing Gas
and Coal Fired Generation
with Solar Energy
Erik Ellis, Ausra, Inc.
VP, Commercial Operations
AzCPA Energy Conference
March 20th, 2009
A-RETEH 2009-FEB
Ausra Technology
2
A-RETEH 2009-FEB
Receiver
pipes Sunlight
Reflectors
Receiver
pipes Sunlight
Reflectors
Ausra’s Technology
3
Simple. Compact. Durable. Reliable.
Water as the
working fluid
Compact Linear Fresnel Reflector (CLFR)
Reflectors
Receiver pipes
A-RETEH 2009-FEB
Basic Building Block - Solar Steam Generator
4
1 Solar Steam Generator = 7.5 MW Thermal ≈ 2.5 MW Power
Kimberlina
A-RETEH 2009-FEB
Technology Validation: Kimberlina (Bakersfield, CA)
5
Standalone Power Production
Number of Solar Steam Generators = 3
Location = Bakersfield, CA
Application = Power
Capacity = 22 MWt, 5 MWe
Date of Operation = October 2008
A-RETEH 2009-FEB
6
Kimberlina Proves Ausra’s Execution Capabilities
Measured
6 mrad Predicted
Kimberlina Caloric Test – Thermal Energy Collected
November 18, 2008
With performance according to model
A-RETEH 2009-FEB
Solar Supplementation to
Existing Generation
7
A-RETEH 2009-FEB
Solar Steam to Augment Power Plants (Boosters)
8
Solar Steam
Generators
Opportunity
• Co-locate solar steam generators
with existing coal/combined-cycle
power plants to provide solar steam
• Repower/extend plant life of
geothermal and biomass facilities
Customer Benefits
• Increase annual energy output
• Match peak electricity demand
• Reduce fuel consumption
• Reduce carbon and other
emissions
• Rapid deployment (< 1yr to COD)
Steam (Saturated or Superheated)
A-RETEH 2009-FEB
Boosters for Combined-Cycle Gas-Fired Plants
9
A-RETEH 2009-FEB
10
Jan
uar
y
Feb
ruar
y
Mar
ch Ap
ril
May Ju
ne Ju
ly
Au
gust
Sep
tem
be
rO
cto
be
rN
ove
mb
er
De
cem
be
r
0
5
10
15
20
7 8 910
1112
1314
1516
1718
1920
Avr
eage
gro
ss e
lect
rica
l pro
duc
tio
n
(Mw
he)
Hour of the day
Solar Electrical Supplement for a Gas-Fired Plant
Average gross electrical production (in MWhe ) per month per hour from 50 acres assuming
33% conversion efficiency
A-RETEH 2009-FEB
11
Solar Supplement for a Gas-Fired Plant
Notes:
F-Class 2 on 1 configuration; 50-acre footprint; superheated steam to cold reheat line
300oF feedwater, Phoenix TMY2 weather and radiation data, 33% gross conversion efficiency
A-RETEH 2009-FEB
Boosters for Coal-Fired Plants
12
A-RETEH 2009-FEB
13
Solar Supplement for a Coal-Fired Plant
Notes:
#6 HP Feedwater Heater; 50-acre footprint;
250oF feedwater, Phoenix TMY2 weather and radiation data, 33% gross conversion efficiency
A-RETEH 2009-FEB
Ausra’s Coal Plant Booster Project Liddell (NSW, AU)
14
Number of Solar Steam Generators = 2
Location = Singleton, NSW, Australia
Application = Coal Fired Booster
Capacity = 9 MWt, 3 MWe
Date of Operation = March 2008
Solar Supplementation to Existing Plant
Erik Ellis
Vice President, Commercial Operations
Ausra, Inc.
602-549-4243
