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Solar Projections

Solar Projections. Rhys Howell Group B 24 th February 2005. The UK’s Solar Resource. 900kwh/m²/year in Scotland In the SW over 1200kwh/m²/year. Types of Solar Energy. Solar Thermal Photovoltaic Passive Solar. Assumptions. Average UK solar irradiation = 1000kwh/m²/year

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Solar Projections

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  1. Solar Projections Rhys Howell Group B 24th February 2005

  2. The UK’s Solar Resource • 900kwh/m²/year in Scotland • In the SW over 1200kwh/m²/year

  3. Types of Solar Energy • Solar Thermal • Photovoltaic • Passive Solar

  4. Assumptions • Average UK solar irradiation = 1000kwh/m²/year • Solar thermal is 25% efficient (Luton) • PV is 9% efficient (Southampton) • Panels cost £1000/m²

  5. Assumptions • 22 000 000 houses • ¼ suitable for solar panels • 155 000 new homes each year • Average Daily Hot Water (DHW) use is 170 litres • Water enters at 10ºC and is drawn off at 55 ºC

  6. Solar Thermal • House requires 3.25 Mwh/year for heating water • 5m² panel can provide 1.25 Mwh/year • Solar fraction = 38% • Installing 5m² panel on all new houses would cost £775 million • Provide 0.05PJ/year for 25 years • £576 million per PJ

  7. Starting from 2006 every new house has solar thermal. 2010 = 0.25PJ 2015 = 0.50PJ 2020 = 0.75PJ 2030 = 1.25PJ Thermal Uptake • Converting 3% of existing south facing houses each year would double these figures.

  8. Panel output 2.5m²=225kwh/year 5m²= 450kwh/year 10m²=900kwh/year 15m²=1350kwh/year 20m²=1800kwh/year Installing 20m² on all new houses would: Provide 0.0775PJ a year for 25 years Cost £3.1 billion a year £1.6 billion per PJ PV

  9. Starting from 2006 every new house has 20m² PV. 2010 = 0.3875PJ 2015 = 0.775PJ 2020 = 1.1625PJ 2030 = 1.9375PJ PV Uptake • Converting 3% of existing south facing houses each year would double these figures.

  10. Meeting the Renewables Obligation • A 20m² PV panel on every new house would produce 0.279Twh/year • If this was done for the 5 years 2006-2010 then 4% of the RO in 2010 could be generated at a cost of £12.4 billion

  11. Workforce • It takes 2 workers 2 days to retrofit solar panels • 3% of houses represents 165 000 buildings. • 900 houses every 2 days. • 1800 workers

  12. GO Solar

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