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Solar Energy

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  1. Solar Energy

  2. Solar Technologies • Photovoltaics • Passive solar heating • Solar Water Heaters • Solar Concentration (http://www.gepower.com/prod_serv/products/solar/en/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/learning/re_csp.html)

  5. 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/en/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.html) (http://www.northwestsolarcenter.org/Faq/faq.html) (http://www.portlandgeneral.com/home/products/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)

  9. Implementation Time Line

  10. 2005 • Energy Policy Act of 2005 • - established tax deductions for 50% energy reductions. • <1% 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_taxdeduction)

  12. 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. • World’s 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_Stirling_largest_solar/)

  14. Costs 1970’s: $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 • >7,000 MW of centralized renewable power plants built (Department of Energy) (http://www.stirlingenergy.com/solar_overview.htm) (http://www.space.com/businesstechnology/technology/solar_power_sats_011017-1.html)

  16. Large Scale Success 1. Resources -Sun = infinite/renewable 2. Technology -2025 R&D investments resulting in new technological efficiency 3. Social Priorities -Public Awareness Campaign to stress severity of the situation (http://www.cleanenergystates.org/CaseStudies/Shell_2050.pdf)

  17. 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/Shell_2050.pdf)