Johann van Ellerwee Plantech

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With the expected Eskom increases over the next five years, retail petroleum service stations are facing reduced profitability and some even closure as profits are continually eroded by rising operating costs. Electricity is one of the costs that can be managed and self generated.

This conference aims to examine best practices in energy efficiency and unpack the options and complexities of generating electricity from renewable energy specifically for retail fuel sites.

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Johann van Ellerwee Plantech

  1. 1. PV InstallationsThen & NowJohann van Ellewee2013-05-09
  2. 2. IntroductionIntroductionIntroductionIntroduction• PLANTECH Associates• Electrical, Mechanical and Electronic Consulting Engineers• Since 1982• Expertise covers electrical, mechanical and electronic consultingengineering services• Johann van Ellewee• B.Ing Electrical and Electronic Engineer• Contact Details• Work: 012 349 2253• Mobile: 084 657 6719• Email: jvanellewee@plantech.co.za
  3. 3. IrradiationIrradiationIrradiationIrradiationSource: re.jrc.ec.europa.eu/
  4. 4. 1. BP Solar Canopy 20031. BP Solar Canopy 20031. BP Solar Canopy 20031. BP Solar Canopy 2003Known BP Service Stations with PV power generation• BP Oasis Beyers Naude North• BP Oasis Beyers Naude South• BP Hans Strydom, Randburg• BP Empire Road, Parktown• BP Tom Jones Street, Benoni
  5. 5. 2. Problems faced over time2. Problems faced over time2. Problems faced over time2. Problems faced over time1. Cleaning of modules are problematic (Self-cleaning only start toapply if the modules are inclined at an angle greater than 15ᵒ.)2. Modules where not strong enough (Modules often broke)3. Low efficiency modules (8%)4. Module discolouring over time5. Expensive (R50/W)6. Low electricity prices made projects not cost effective7. Eskom did not allow for grid connection
  6. 6. 3333.... Solar PV NowSolar PV NowSolar PV NowSolar PV Now• PV in 2013• Modules are more robust and are able to withstand even hail.• Module efficiency has increased substantially (±20%)• Module price has decreased (R9/W depending on Manufacturer)• Increased electricity price• Grid connection and IDM
  7. 7. 4444. Integrated Demand. Integrated Demand. Integrated Demand. Integrated DemandManagement (IDM)Management (IDM)Management (IDM)Management (IDM)IDM’s small scale renewable energy programme provides a standardoffer for small renewables• Up to 1 MW in size per installation• Installation must be for own consumption only• At no point in time is grid feed-in allowed• Compensation of 1.2 R/kWh for the first 3 years• Offer fits perfectly for small to medium PV installations• More information visit www.eskomidm.co.za
  8. 8. 5555. Average Service Station. Average Service Station. Average Service Station. Average Service StationSome information regarding the average Service Station• Electricity usage is between 33 000 – 38 000kWh per month• Electricity tariff is currently at R1,303/kWh (Winter R1,906/kWh)• Monthly Electricity charge is then between R42 999 – R49 514.
  9. 9. 6666. Assumption for. Assumption for. Assumption for. Assumption for RoIRoIRoIRoIAssumptions made for the exercise of calculation the return ofinvestment period for a PV power plant• 100kWp• R17/Wp Installed (Total cost of R1,7mil)• Annual yield of 140 000kWh (1400kWh/kWp)• 5 year annual electricity increase of 8% (There after 5%)
  10. 10. 7777. Current Return of Investment. Current Return of Investment. Current Return of Investment. Current Return of Investment• ESKOM electricity increase for the next 5 years is at 8%• If you currently pay R1.303/kWh in 5 years you will pay R1.91R 0.00R 2 000 000.00R 4 000 000.00R 6 000 000.00R 8 000 000.00R 10 000 000.00R 12 000 000.00R 14 000 000.00R 16 000 000.00R 18 000 000.001 3 5 7 9 11 13 15 17 19 21 23 25Interest/SavingsYearsReturn of Investment ChartProject Startup CostCost Savings with AnnualIncrease
  11. 11. 8888. 2003 Return of Investment. 2003 Return of Investment. 2003 Return of Investment. 2003 Return of Investment• In 2003 the price for electricity was R0.39/kWhR 0.00R 1 000 000.00R 2 000 000.00R 3 000 000.00R 4 000 000.00R 5 000 000.00R 6 000 000.00R 7 000 000.00R 8 000 000.001 3 5 7 9 11 13 15 17 19 21 23 25Interest/SavingsYearsReturn of Investment ChartProject Startup CostCost Savings with AnnualIncrease
  12. 12. 9999. Factors to Reduce. Factors to Reduce. Factors to Reduce. Factors to Reduce RoIRoIRoIRoI• Tax depreciation under Plant and Machinery for Businesses• IDM small projects for projects larger that 10kWR 0.00R 2 000 000.00R 4 000 000.00R 6 000 000.00R 8 000 000.00R 10 000 000.00R 12 000 000.00R 14 000 000.00R 16 000 000.00R 18 000 000.001 3 5 7 9 11 13 15 17 19 21 23 25Interest/SavingsYearsReturn of Investment ChartProject Startup CostCost Savings with Annual IncreaseCost Savings with Annual Increaseand Tax DeductionCost Savings with AnnualIncrease, Tax Deduction and IDMRebate
  13. 13. 10. Summary10. Summary10. Summary10. Summary• South Africa is perfect for Solar PV• Solar Technology has vastly improved in the past 10 years• The price of a PV plant has decreased• Solar PV is a cost effective investment for not only ServiceStations but also other Businesses
  14. 14. Questions?Questions?Questions?Questions?
  15. 15. Thank You.Thank You.Thank You.Thank You.

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