Future Rural Electrification

1
Future Rural Electrification

• The challenge and a proposal

2
CHALLENGE TO REDUCE COSTS

• The present backlog of electrification is mainly
  in KZN (R3500) and Eastern Cape (R3200)
• National requirement is 3m connections in 10
  years.
• Target average cost is R3000 per connection.
• Need to reduce cost by at least 10 .

3
Past savings 3 wires to 2 1 wire MV
SINGLE PHASE LV SUPPLY TO CUSTOMER SINGLE WIRE
EARTH RETURN MV FEEDER
4
Past savings 3p to 1p LV
LV FEEDER TECHNOLOGY
SINGLE PHASE THREE PHASE
TWO PHASE

230V, -230V
5
Past savings ED to ECU
ECU CHARACTERISTICS

• ALL THE FUNCTIONS OF THE ED METER
• PLUS
• EARTH LEAKAGE
• OVER CURRENT

NEW READY BOARD STANDARD SOKET OUTLET
6
A rural load profile (Gasese)
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RURAL LOAD DISTRIBUTION
8
SYNOPSIS OF GARAGAPOLA
9

Electrification cost per connection
6000
5000
4000
Rands
3000
2000
1000
0
1992
1993
1994
1995
1996
1997
1998
1999
Year
10
PROPOSAL TO FURTHER REDUCE COST

• Average cost R3000 required
• Options
• Non grid - Present R3500. If used then grid
  average needs to be R2500.
• Not a practical option!
• Grid-Suggestion is to use light grid (1A)
• - Cost of meter is a large portion of
  cost (10)
• -Network cost reduced by 10
• -Can connect without strengthening
• -Provides 24 times the energy of non-grid
  at a lower cost.

11
LINKING POVERTY TARIFF TO ELECTRIFICATION SAVINGS

• Opportunity to benefit poor people more
  effectively.
• Use no meter and no connection charge.
• 1A meter allows for colour TV radios and lights,
  (4 times the appliances of non grid)
• Cost saving estimated at 15
• Poverty tariff immediately provided to the poor.

12
Total energy solution

• Look for a coordinated approach to supply the
  energy needs.
• EDRC has shown lighting to be very important to
  all users.
• Use of a light grid with alternative energies for
  heating and cooking
• Combine with Concessionaires to meet more
  difficult operational issues e.g. more rural we
  go the more difficult to operate a grid.

13
Comparison of some researched townships with
Elt150 kWh/month