PV Installations

Then & Now

Johann van Ellewee

2013-05-09

Introduction Introduction Introduction Introduction

• PLANTECH Associates• Electrical, Mechanical and Electronic Consulting Engineers• Since 1982• Expertise covers electrical, mechanical and electronic consulting

engineering 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

Irradiation Irradiation Irradiation Irradiation

Source: re.jrc.ec.europa.eu/

1. BP Solar Canopy 2003 1. BP Solar Canopy 2003 1. BP Solar Canopy 2003 1. BP Solar Canopy 2003

Known 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

2. Problems faced over time 2. Problems faced over time 2. Problems faced over time 2. Problems faced over time

1. Cleaning of modules are problematic (Self-cleaning only start to apply 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

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

4444. Integrated Demand . Integrated Demand . Integrated Demand . Integrated Demand Management (IDM)Management (IDM)Management (IDM)Management (IDM)

IDM’s small scale renewable energy programme provides a standard offer 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

5555. Average Service Station. Average Service Station. Average Service Station. Average Service Station

Some 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.

6666. Assumption for . Assumption for . Assumption for . Assumption for RoIRoIRoIRoI

Assumptions made for the exercise of calculation the return of investment 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%)

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 R1.91

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Return of Investment Chart

Project Startup Cost

Cost Savings with Annual

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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/kWh

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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 10kW

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Cost Savings with Annual Increase

Cost Savings with Annual Increase

and Tax Deduction

Cost Savings with Annual

Increase, Tax Deduction and IDM

Rebate

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 Service

Stations but also other Businesses

Questions?Questions?Questions?Questions?

Thank You.Thank You.Thank You.Thank You.