Eskom’s energy efficient motors programme, part of the utility’s national energy efficiency drive, took a step forward in Gauteng recently with the official scrapping of old inefficient motors at a site near Vereeniging.
The Eskom energy efficient motors programme aims to replace inefficient electric motors in the 1.1kW to 90kW range with newer efficient models.
The incentive programme, offered currently by three accredited suppliers, enables purchasers to get energy efficient-rated motors at the cost of standard motors – Eskom’s subsidy making up the difference. Part of the programme, designed to create an awareness of the vital contribution these motors can make to increasing national electricity saving, is the removal of old motors by scrapping.
All purchases of motors ranging from 1.1kW through to 90 kW qualify for subsidies. The 1.1kW units will qualify for a subsidy of R400 (US$54). At the top of the range, the 90kW unit subsidy will be R3 500 (US$467).
Seven energy-guzzling industrial motors were physically scrapped at a site near Vereeniging today, to be replaced by new high efficiency motors (labelled Eff 1) that will save industry both electricity and money for years to come.
To qualify for the programme discount on new efficient motors, the old motors must be returned for scrapping with stator and rotor intact. This ensures that these high energy users are taken out of commission and are never available for re-sale.
Dr Tsakani Mthombeni, manager of the Eskom Energy Efficient Motors programme, says cost savings from participating are significant. “A 22kW energy efficient motor will include a R1 400 (US$ 187) once-off subsidy on the catalogue price and produce energy savings of 9,056kWh a year. In money terms this equates to R5 071 (US$676) a year. Additional benefits include compatibility with variable speed drives, presenting operators with an opportunity to improve drive systems and optimise processes.”
In addition, funds realised from sale of the recoverable metals and parts will be paid into the programme fund to finance the further acquisition of new Eff 1 motors for South African industry.
"There are an estimated 100 000 electric motors representing a collective 10.0 GW of installed capacity in South Africa,” says Mthombeni. “The electrical consumption of these motors, which approximates that of more than 1.6 million households, accounts for 60% of the total industrial energy usage and about 57% of peak demand generation.
“Replacing just 5 000 standard motors with energy efficient motors would result in a saving of 2.482 megawatts,” he says.