Solar Presentation – University of Texas Chem. Engineering Solar ...
Transcript of Solar Presentation – University of Texas Chem. Engineering Solar ...
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Solar Presentation – University of Texas
Chem. Engineering
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Solar Power and the Water Nexus John Hoffner
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Outline for Today
1. Who
– is CH2M HILL and the Solar PV Design Team?
2. What
– makes up a solar PV power plant, and what we do for our clients?
3. Our
– tools and some other projects that are underway.
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When you use a mobile while driving, your head is somewhere else!!
Source: adsoftheworld.com, La Cocina Publicidad
Safety Message
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Committed to Health and Safety
• Health, safety, environment, and quality – HSE&Q is a far-reaching initiative that
encompasses employee behavior in the workplace, on the jobsite, and at home
– Practically, safety is continually reinforced with basic training for every employee and an online resource for education, information, reference, and metrics
CH2M HILL is committed to building a world-class health, safety, environment, and quality program. The Target Zero program seeks to eliminate all safety hazards and violations for all employees.
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CH2M HILL Overview
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We are a global leader in: consulting, design, design-build, operations, and program management.
• Headquartered in Englewood, Colorado
• Operations on all continents
• 30,000 employees worldwide
• 100 percent owned by our employees
• Broadly diversified across multiple business sectors
• US$6.4 billion in revenue
CH2M HILL Today
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Established in 1946 by three engineers and a professor, CH2M HILL operated from its very beginning on four simple values: take care of clients, deliver great work, do right by
employees, and stay true to our integrity and honesty.
Founded on Values
Clair Hill Holly Cornell James Howland Burke Hayes Fred Merryfield
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Diverse Business Portfolio
30% of our business is Energy
Energy Facilities & Infrastructure Government
Energy and Chemicals Transportation Nuclear
Water Industrial & Advanced Technology Government Facilities and Infrastructure
Power Operations and Maintenance Environmental Services
Sustainability Delivery Excellence
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Energy Division
Power BG
CH2M HILL
Water BG
Renewable Energy -Solar Photovoltaics -Solar CSP -Wind -Geothermal -Biomass
1. Who is the Solar PV Design Team?
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Energy for Water Consumption per capita in Year 2000 compared to predicted in 2050
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CSP
Biomass
Solar PV
Geothermal
Wind
Technologies that we use for our designs
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The Solar Photovoltaic (PV) Design Team
DESIGN,
BUILD,
CONSTRUCTION MONITORING
- Typical Work Products:
- Solar Site Assessments
– Preliminary Designs and Analysis
– Layout of PV Power Plant
– Cost Estimates
– Economic Analysis – tax credits, green credits, and pro formas
– Detailed Designs
– Work with Local Contractors to Build the PV Power Plants
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Solar PV Power Plants
ENR Ranks
CH2M HILL
Solar Engineering
#1
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Solar PV Projects and Water Facilities
10 MW Solar Plant at MASDAR
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75 kW roof mounted PV on
North Brunswick NJ,
Water Treatment Facility
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City of Tucson Water Dept. – design specifications and bid documents for a 1 MW Solar Plant. Constructed in 2010.
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Built above the existing CAVSARP facility.
www.tucsonaz.gov/water/docs/report_tucson_solar_final.pdf
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3 MW Solar Plant for City of Las Vegas at the Water Pollution Control Project – Completed in August 2012
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66 MGD Waste Water Treatment for Las Vegas
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3 MW Las Vegas Plant Under Construction
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Las Vegas Solar Array – Tracking System
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San José/ Santa Clara Water Pollution Control Plant
S
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Conducted a detailed study and preliminary design for 5 MW PV plant to co-exist on land with Burrowing Owls. Solutions were difficult but possible.
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New Project at Clark County Water Reclamation District Nevada, Las Vegas – 10 to 20 MW Solar Plant on 100 Acres
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Examples of Solar at Water Treatment Facilities
Alvarado Water Treatment Plant,
San Diego, CA 1 MW atop water
reservoirs; PPA with solar installer
West Basin
Municipal
Water District,
El Segunda, CA
Grit Handling Building heated by Solar
Thermal Collectors in Saico, ME
North Hudson
Sewerage
Authority,
Hoboken, NJ
Projects at Water Facilities Built by Others
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Ideal Opportunities for Solar PV at Water Facilities
Accessible space for PV installation (buffer zones,
ponds, and available roof space)
Access to the utility grid or a convenient point to
interconnect to the building electrical service
High electric rates paid to the existing electric utility
Markets where utility, state or local incentives are
available
Good solar resource (South, or Southwest region of US,
or international sites with high sun levels)
Local solar contractors or financiers willing to build and
finance the solar project through a third party power
purchase agreement
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The first solar cells in the 1950s were about 0.5 % efficient in converting sunlight. Today a module can convert sunlight to electricity at an efficiency of greater than 20 %.
1 kW system:
In 1950 = 2,100 square feet
In 2012 = less than 100 Square feet
(4 kW system will supply enough for a small house during peak hours)
Energy Fun Fact #1
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“Bell System Solar Battery Converts Sun’s Rays into Electricity”,
Advertisement from Look Magazine, 1956.
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Modules
Cells
Array Field
2. What makes up a solar PV power plant, and what we do for
our clients?
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Basic Types of PV Cells
• Monocrystalline Silicon
• Polycrystalline Silicon
• Cast Polysilicon
• String Ribbon Silicon
• Thin Film Cells
• Group III-V Technologies
Multi-junction Devices 20 to 41 %
12 to 21 % Efficiency
11 to 15 % 6 to 10 %
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How Cells Work
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How Single Crystalline Silicon cells are made
Feedstock melted into ingots in Furnace
Ingots sliced into wafers/cells
Cells are arranged and wired into modules
Start with basic sand/quartz
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Exciting New Emerging Technologies
Nano-solar techniques
NanoSolar – in California - Electrically Conductive Plastics
Konarka – Polymer and dye-sensitized solar cell; have flexible cells about 5 % efficient
Multi-layered thin film
Each layer is sensitive to different light frequency resulting in high efficiency
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Innovative Applications in the Field
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The Growth of the Solar Market (from 2007 forecast)
Actual ~16 GW (European Photovoltaic Industry Association)
Actual 2011 ~27 GW (Photon Int’l) Capacity 36 GW (predicted to exceed 66 GW in 2012)
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Module Cost Decline as Industry Grows (Source: Strategies Unlimited, PHOTON Consulting)
$2,000
$3,000
$/kW
2012, 2nd qtr $900
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Bloomberg New Energy Finance (BNEF) 2012
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United States Federal Tax Credit (called the ITC)
Commercial and residential customers with a tax liability receive a tax credit of
30% of the capital investment in a solar PV system. No limit on the total. For
example, if it is a $1 million investment, tax credit is $300,000. Through 2016.
Many states have Renewable Portfolio Standards
(sometimes referred to as mandates)
Electric utilities are required to purchase a pre-defined minimum amount of
renewable energy. Some states such as Arizona have a specific carve-out for
solar energy.
Electric utilities in some local areas offer cash incentives
Some electric utilities offer cash rebates for solar installations. In some cases
the electric utilities purchase Renewable Energy Credits (RECs).
Web Site: DSIREUSA.org
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Market Drivers
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Market Drivers
Map of US Renewable Portfolio Standards (DSIRE)
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Solar PV Plant Major Components
• Solar Array
– Solar modules will typically be wired in series to achieve a photovoltaic source circuit voltage of <1,000 VDC.
• Balance of System
– Several source circuits will terminate in a master combiner box, and feed a central inverter.
– The inverter converts 1,000V DC into 480V AC, and;
– potentially a transformer
Master combiner box
DC disconnect DC-AC Inverter
Transformer
Solar Array (tracking system)
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Basic Utility-Interactive System Diagram
PV Array
Combiner Box
Inverter
AC Disconnect
Utility DC Disconnect
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The first solar water heater commercial business
started in 1895
The “Climax” solar water heater sold for $25 to
residences
The average homeowner saved $9/year of coal, or
gas
By 1900 a total of 1600 systems in southern
California were installed
By 1923 inexpensive oil and gas wiped out the
industry
Energy Fun Fact #2
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3. Some of our design tools and other projects that are
underway
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Renewable Energy Group Site assessments, Modeling and PV Plant Design
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PVSYST
SAM
3-D modeling
PV technologies
System types: tracking, fixed, concentrators
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Analysis by Kurt Lyell/AUS
Current project at WTP
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Conceptual Layout: 502 kW
Analysis by Kurt Lyell/AUS
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3D View
Analysis by Kurt Lyell/AUS
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Large Scale Solar Power Plant in Arizona Adjacent to a
Natural Gas Power Plant – CH2M HILL Design
50 MW solar PV plant. Electricity goes directly into the utility grid. Will produce about 100,000 MWh/year.
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18 MW plant in NJ – Challenge to follow the land contours
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MASDAR CITY - What is it?
A Sustainable City providing the highest quality of life with the
lowest environmental footprint.
Carbon neutral Zero waste Fossil fuel free zone Low water consumption Economically profitable
www.masdar.ae
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Life in Masdar City – Masdar HQ Exterior
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Life in Masdar City – Civic Square
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Life in Masdar City – Streetscapes
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Rendering As built
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Masdar Institute of Science and Technology
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November
12
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Completed PV System on Roof of MIST BUILDING
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One Line Diagram
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Dust - 15 to 20 % loss without brushing
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November 12 p56
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November 12 p57
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Example, a 10 MW sized PV plant could produce:
10 MW x 2,000 MWh/MW/yr = 20,000 MWh/year
NOTE: Production varies by amount of sunlight and type of solar design
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Land (or roof) 4 to 5 Acre/MW
Electric Production 2,000 MWh/MW/yr
Typical System Design Metrics and Costs
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Simplified Economics
Example: A 10 MW plant would cost $27.5 million installed.
Annual savings = $100/MWh x 20,000 MWh/yr = $2,000,000/year
O&M typically cost $10/MWh/yr. Therefore, O&M = $200,000/year
Simple Payback = about 15 years ($27.5/$1.8 million)
NOTE: With tax credits and third party financing, a detailed financial
analysis would indicate a payback from 5 to 10 years
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Electricity Cost $100/MWh From local utility
Solar Plant Capital Cost $2.75 to $3.75 million/MW
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Other Financial Models
Third Party Financed:
Economics can look more attractive with detailed economic
analysis and when financed by a third party through a power
purchase agreement (PPA).
Finance/Owner Transfer:
Third party finances and operates the plant for pre-determined
time period, then turns ownership over to municipality. Could be
a lease arrangement.
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100 MW PV Plant for a Developer in Jordan
• Technology assessment
• Preliminary designs and specifications
• Market analysis
• Regulatory setting
• Preliminary environmental and social impact assessment
• Host country impact analysis
• Financial analysis
Ideal Solar Site (Jordan)
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27 MWac
Phalodi,
Rajasthan
5 MWac
Bankura,
W. Bengal
Two PV plants in India for Solar PV Developer
• Meteorological stations installation • Solar weather data analysis • Preliminary designs and specifications • Transmission system assessment • Preliminary environmental analysis • Technical specifications for EPC bids • Financial analysis
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Solar Meteorological Station - Bankura
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Met Station with Permanent Wind Tower
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Useful Web sites
Interstate Renewable Energy Council
WWW.IRECUSA.ORG
National Renewable Energy Laboratory
www.nrel.gov/solar/
Sandia National Laboratories
www.sandia.gov/energy-water/
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The average electric usage in homes is about 10,000 kWh per year in Texas Lance Armstrong used approximately 100 kWh of energy (in food) to ride the Tour de France: 2,100 miles. That is about $10 of electricity. A car would have used about 8,800 kWh equivalent, or about $880 of electricity.
Energy Fun Fact #3 (pre-doping slide)
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Questions?
John Hoffner, Solar PV Program Manager CH2M HILL Austin, Texas [email protected] 512-249-3329