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Greenparkview public meeting, Tuesday March 8th, 2011

Greenparkview public meeting, Tuesday March 8th, 2011. agenda. Introduction Steve Lenehan, Chairperson, PRA Turning Parkview Green Indra de Lanerolle, Greenparkview Costs and benefits Rob Brine, Greenparkview equipment options Rob Brine, Greenparkview

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Greenparkview public meeting, Tuesday March 8th, 2011

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  1. Greenparkview public meeting, Tuesday March 8th, 2011

  2. agenda • Introduction Steve Lenehan, Chairperson, PRA • Turning Parkview Green Indra de Lanerolle, Greenparkview • Costs and benefits Rob Brine, Greenparkview • equipment options Rob Brine, Greenparkview • What next? Indra de Lanerolle, Greenparkview

  3. FromRedtoGreen SafeParkview now has over 500 members - nearly half the households in the suburb are now contributing to make Parkview safer. Our goal now is to see how we can build on that success to make Parkview greener

  4. Using the power of neighbours and neighbourhoods • Harness collective buying power • Share research and information • Get the most appropriate solutions at the best prices.

  5. Starting with research So far we have conducted a survey to gauge interest in solar water heating A team led by Rob Brine has also done extensive research on suppliers, on costs and benefits of solar water heating and on the technology choices available.

  6. Survey results • Sent to 700 email addresses at about 480 safeparkview and PRA households. • 195 responses • 55% said they were willing to participate in a bulk solar water heating project • Average household spends R1,500 per month on electricity

  7. COSTS AND BENEFITS

  8. COSTS AND BENEFITS Financing a solar water heating system should be viewed in the context electricity tariff hikes and electricity shortages. R1000 bill now will increase to nearly R2000 in the next three years. Eskom offering rebates of between R4,200 and R12,500 per system.

  9. Investment Appraisal The investment required for a solar geyser ranges from R9k – R22k (after subsidy). Typical monthly electricity bills in Parkview are R1500. Water heating with an electric geyser accounts for 40%. Converting to a solar geyser would save R600 per month, on average.

  10. Payback Period The payback period of converting to a solar geyser system would typically be between three and five years (some individual systems may have a longer payback period of eight or nine years).

  11. Useful Product Lifespan & Warranty The average electric geyser has a working life span of 7 years- some lower end solar geysers range between 8-10 years (some solar systems have a 25 year life span). SABS approved systems normally have a 10-year warranty.

  12. Net Effect on Home Insurance Standard insurance cover is available, some offer a reduced premium for certain systems. Insurers in South Africa require that solar geyser systems comply with SABS standards and those demanded of Eskom’s accredited suppliers.

  13. Net Effect on Property Values House value with solar heating installed increases. SA realtors reported average was +7% with a peak at 11% on properties valued at under R2.5 million.

  14. EQUIPMENT OPTIONS

  15. Choosing a solar geyser seems complicated - it isn’t. Advantage is that the research has been done for you. Eskom publishes useful guides http://www.eskomdsm.co.za/library

  16. HOT WATER REQUIREMENTS & SIZE SYSTEM REQUIRED Don’t rely on electrical element, plan properly, limiting use of the back-up element means you maximize return on your solar investment. 50 litres of hot water per person + an extra 50 litres to calculate minimum capacity of your solar water system.

  17. Two types of Panels - ‘Flat Plate’ or ‘Vacuum Tube’ Vacuum Tube Flat Plate

  18. EVT EPC CLEAR DAY MILDLY CLOUDY CLOUDY BTU/M2/DAY

  19. TWO TYPES OF SYSTEM AVAILABLE Direct systems - water is heated-up directly Indirect systems - water is heated-up via a heat exchange mechanism and a transfer medium

  20. TWO TYPES OF STORAGE SYSTEM AVAILABLE Pumped storage – water is forcibly moved by a pump (also known as a split-system) Thermosyphon – the tank is placed above the panel- water moves by convection (also called close-coupled)

  21. THREE TANK CONFIGURATIONS Standard installation should be selected if the existing electric geyser needs to be replaced. Pre-feed installation feeds solar-heated water into an existing geyser when extra hot water capacity is required. Retrofit systems possible- saves on cost of new solar tank.

  22. WHAT NEXT?

  23. what next? • Those interested complete quote questionnaire online and tell others • Asking for suppliers to provide proposals including pricelists and discounts bids. • select preferred suppliers (quality, terms, ability to deliver and price) • users select supplier and product and sign up directly with supplier. Discounts will depend on number of people signed up.

  24. Already have a system installed and are willing to share your experience with us? Please forward your contact details to us at green@parkview.org.za

  25. Want to become involved in the project which will request quotes from suppliers? PLEASE COMPLETE THE SURVEY go to https://www.surveymonkey.com/s/greenparkview or visit the PRA website www.parkview.org.za

  26. Should you have any questions or concerns about the initiative, kindly email us at green@parkview.org.za

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