Solar Energy

1
Solar Energy
2
Solar Technologies

• Photovoltaics
• Passive solar heating

• Solar Water Heaters
• Solar Concentration

(http//www.gepower.com/prod_serv/products/solar/e
n/faqs/solar_elec_tech.htm )
3
Concentrating Solar Energy

• Concentrating Solar Photovoltaic Power (CSPP) is
  one of the most efficient and cost effective
  forms of solar energy.
• Decreases required cell area and maximizes
  sunlight collection
• Increases cell efficiency (concentrates sunlight
  up to 500 times!)

(http//thefraserdomain.typepad.com/energy/2005/08
/about_concentra.html)
4
3 Main Types

• Parabolic-trough heats oil which is used to boil
  water
• Dish/engine heats fluid which expands and
  produces mechanical power
• Power tower heats molten salt to generate
  electricity through a conventional steam
  generator

(http//thefraserdomain.typepad.com/energy/2005/08
/about_concentra.htm) (http//www.nrel.gov/learnin
g/re_csp.html)
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A Perfect Match
Solar power can be tailored to meet a diverse
range of spacial and capacity needs.

• Residential Systems For New Existing Homes
• Remote Home Village Systems
• Commercial Systems
• Remote Off-Grid Industrial Systems

(http//www.gepower.com/prod_serv/products/solar/e
n/prepkg_sys/index.htm)
6
Connecting to the Grid
Net Metering receiving credit for electricity
that you send back into the power grid

• Bridges energysources
• Bi-directional metering equipment at no charge
• Grid stability and lower costs

(http//www.csmonitor.com/2004/0212/p14s02-sten.ht
ml) (http//www.northwestsolarcenter.org/Faq/faq.h
tml) (http//www.portlandgeneral.com/home/product
s/power_options/netMetering/net_metering.asp?bhcp
1)
7
Stabililty and Maintenance

• Roof mountings withstand 125 mph winds
• Compatible with almost all roofing materials
• Modules withstand one-inch hailstones at 50 mph.
• Maintenance is minimal and inexpensive
• hose it off a couple times a year.
• annual check-up
• replace batteries every 5-10 years

8
Solar Power's Footprint

• Easy to site
• Less air pollution
• Less water consumption

(www.seia.org/) (http//www.gepower.com/prod_serv/
products/solar/en/faqs/solar_elec_tech.htm)
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Implementation Time Line
10
2005

• Energy Policy Act of 2005
• - established tax deductions for 50 energy
  reductions.
• lt1 of US energy needs provided with solar
• Price per watt still falling (4.50/watt in
  1970s) push for continued drop

2006
11
2015
NW Energy Needs 25,000 MW

• Heavy financial investments in
• -Research
• -Demonstration
• -Development
• Technological advances
• Successful lobbies for tax incentives and
  government funded research.

(http//www.aia.org/adv_commercialbuilding_taxdedu
ction)
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The NW receives more than enough sunlight to meet
our annual power needs
13
2015
continued.

• Determine prime locations for large scale solar
  arrays
• an area 20 the size of Nevada would power
  U.S.
• Acquire permits, purchase land, develop
  infrastructure.

• Worlds largest solar system to date in S. CA.
• -34,000 dish array
• -4,500 acres
• -850 MW

(http//pesn.com/2005/08/11/9600147_Edison_Stirlin
g_largest_solar/)
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Costs

• 1970s 4.50/watt
• 2010 3/watt
• 2020 1.5/watt
• 2/watt achieved commercially competitive!

• 1 kW array produces 1,000 kW h/yr
• Affordable
• Microtechnology

(http//www.nrel.gov/ncpv/pdfs/27450.pdf)
15
2025
NW Power Needs 28000 MW

• International support provided by collective
  interest in solar power station.
• Developed through NASA and other space programs
• gt7,000 MW of centralized renewable power plants
  built (Department of Energy)

(http//www.stirlingenergy.com/solar_overview.htm)
(http//www.space.com/businesstechnology/technolo
gy/solar_power_sats_011017-1.html)
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Large Scale Success

• 1. Resources
• -Sun infinite/renewable
• 2. Technology
• -2025 RD investments resulting in new
  technological efficiency
• 3. Social Priorities
• -Public Awareness Campaign to stress severity of
  the situation

(http//www.cleanenergystates.org/CaseStudies/Shel
l_2050.pdf)
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2050
NW Power Needs 40,000 MW

• Energy Policy Act now mandates efficiencies
• Solar technology in ALL new homes
• Large scale solar structures
• Passive solar architecture design / active solar
  supplements where possible
• Hope and excitement for solar energy use and
  development

(http//www.cleanenergystates.org/CaseStudies/Shel
l_2050.pdf)
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