March 2013

CHOICES SA - Energy Access for Improved

Rural Livelihoods

ENERGY TRAINING WORKSHOP

ENERGY EFFICIENCY

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

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

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

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

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

nb-wonderbag.com

An opportunity to invest

FEB 2012

INVESTMENT

OPTIONS

R200 to R250

Background What 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.

Improved cook stoves - Efficient and clean burning

cooking

Traditional Cooking

Traditional energy source and use – Not efficient

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

Environmental friendly briquettes & cook

stoves – from biomass sources

More Clean energy efficient burning using briquettes

Making briquettes using biomass waste from area – in community

Invest to Save Options

1. Install a solar water heater

2. In stall ceiling

3. Insulate the ceiling/ roof

Example An efficient fuel for cooking

Liquid Petroleum Gas – switch from electricity or

paraffin

Step 3 – Switch to More Energy

Efficient Fuels

Gas for Cooking Option