Conduit Hydropower Potential in City’s WDS

P1-1

FeasibilityPayback period

• The preliminary cost for the pilot plant totalled R550 000.

• This was for the turbine and generator, electrical work, pipework, valve chamber, enclosure/plant housing, monitoring system and data logging and communication system.

• Annual income could be in the order of R130 000 for electricity generated based on 100 c/kwh.

• Assuming a discount rate of 10% and a very optimistic energy escalation rate of only 8% results in a payback period of ±5 years (IRR = 28% for 20 year design life).

CHP in City’s WDS

Conduit Hydropower Potential in City’s WDS

P1-2

• Why develop large hydropower? – Economically feasible – Garsfontein #1 and others

• Why develop smaller conduit hydropower schemes?– On site use of electricity– Upliftment of community

• Free internet access for an area?• Free electricity for a school?• Mass lighting?

– Improved operational control of WDS• Telemetry• Security/Alarm system• Site lighting

• Identification and development of other water infrastructure with hydropower potential

Way forward

CHP in City’s WDS

Conduit Hydropower Potential in City’s WDS

P1-3

Way forward - Options

CHP in City’s WDS

Potential this past week = 82 097 kwh

Annual potential = 4 280 000 kwh

Conduit Hydropower Potential in City’s WDS

P1-4

Way forward - Options

CHP in City’s WDS

For larger schemes funding is available