Presentation by Petrus Naude of OneWorld at the CHOICES project community energy workshops in Somerset East, Pearston and Cookhouse communities, Blue Crane Route Municipality in South Africa’s Eastern Cape, held in February and March 2013. The presentation covers issues of energy efficiency as they relate to South Africa’s communities. More information about OneWorld: http://www.oneworldgroup.co.za/ Further details of the CHOICES project: http://www.iied.org/choices-community-energy-project-south-africa

1. March 2013
CHOICES SA - Energy Access for Improved
Rural Livelihoods
ENERGY TRAINING WORKSHOP
ENERGY EFFICIENCY

2. What is Energy Efficiency?
• Energy efficiency is "using less energy to
provide the same service“
- http://eetd.lbl.gov/ee/ee-1.html
• Something is more energy efficient if it
delivers more services for the same energy
input, or the same services for less energy
input
– IEA: tp://www.iea.org/glossary/glossary_E.asp

3. What is Energy Efficiency – Steps?
Step 2 -
Efficient
appliances
Step 3 -Switching
to more efficient
fuel e.g. electricity
to gas
Step 1 -
Change
behavior

4. WHICH ELECTRICITY USE IS MOST EXPENSIVE?
Typical Household Electricity Cost (2012 BCRM Tariff (Prepaid) - MONTH
Appliance Watts
Hours
used
Days
used kWh /Units
Rand per
month
% of Total
Use
1xEnergy saver
light 11 5 30 1.7 R1.29 1.2%
1XTV (B&W) 35 6 30 7 R5.32 5.1%
1xIron 1000 4 6 24 R18.24 17.6%
1xKettle 1000 0.5 30 15 R11.4 11.0%
1xHotplate 1000 1 25 25 R19 18.3%
1xRegular light 100 5 30 15 R11.4 11.0%
1xSmall
refrigerator 250 6.5 30 49 R37.24 35.8%
Total without FBE 136.7 R103.89
Total with FBE 86.7 R65.89
1
2

5. Step 1 - No Cost Options for saving
energy
• Turn geyser temperature down to 60o Celsius
• Use less hot water – water heater biggest user
• Switch off equipment when not in use
• Reduce excessive heating or cooling in house
• Only include the amount of water needed when heating water in
a Kettle
• Physically turn off appliance switches or at the wall (e.g. a TV or
Hi-Fi), instead of leaving them on stand-by
• Make one-pot meals and keep lids on pots and /or bring foods to
the boil quickly on the “high” setting, then turn the heat down to
“simmer” to finish cooking
• Thick frost on chilling panels reduces a fridge and freezer’s
cooling ability

6. Step 2 – Install Low Cost Options
1. Install efficient lighting - CFL (R30 to R40)
Save 70% of lighting cost and 10 times longer
2. Install an efficient shower head (R150 – R250)
Save 30 to 40% of water heating cost
Save water
3. Insulate the geyser (R200 – R300)
Save 20 to 25% water heating cost

7. nb-wonderbag.com
An opportunity to invest
FEB 2012
INVESTMENT
OPTIONS
R200 to R250

8. BackgroundWhat is it:
• The Wonderbag is a non-electric, heat-retention cooker
that allows food that has been brought to a boil on a
stove or fire, to continue cooking for hours after it has
been removed from the direct fuel source.
How does it work:
• The Wonderbag’s heat retention properties the retains the heat to allow the
food to continue cooking without the use of additional cooking fuel.
• Each Wonderbag comes with a recipe book containing instructions.
• Bring your food to the boil, place in the bag, leave for the recommended
time open to serve.

11. Improved cook stoves -
Efficient and clean burning
cooking

12. Traditional Cooking
Traditional energy source and use –
Not efficient

13. Improved cook stoves - Efficient and clean
burning cooking
Key features compared to an open fire:
uses at least 50% less wood/charcoal,
cooks 2-4 times quicker,
produces 70% less smoke
50% less greenhouse gases
Example – “EcoZoomStove”
Marketed by Restio Energy SA
Low Cost Efficient Stoves cost: R150 to R300

14. Environmental friendly briquettes & cook
stoves – from biomass sources
More Clean energy efficient
burning using briquettes
Making briquettes using biomass
waste from area – in community

15. Invest to Save Options
1. Install a solar water heater
2. In stall ceiling
3. Insulate the ceiling/ roof

16. Example An efficient fuel for cooking
Liquid Petroleum Gas – switch from electricity or
paraffin
Step 3 – Switch to More Energy
Efficient Fuels

17. Gas for Cooking Option