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Weathering the winter with energy efficiency

06 June 2019 | Story Valentino Ndaba | Photo Rian Horn

Solar Panels at UFS Qwaqwa Campus — Revolutionising electricity with sun power: Solar panels at the Qwaqwa Campus.

Over the past few years the University of the Free State (UFS) has been planting panels, now the time has come to reap. Solar farms produced a return on investment in the form of R1.4 million in savings as a result of photovoltaics (PV) between January and March 2019. Nicolaas Esterhuysen, an electrical engineer at the Department of University Estates also reported a 2.34% decline in electricity usage between 2013 and 2018.

Solar panels are the future

According to Esterhuysen, the solution to a power crisis lies in “either becoming more energy efficient or generating our own at a cheaper cost”. All campuses have managed to save a total of R5.4 million in 2018 through producing our own power (solar PV) and actively managing the instantaneous load demand with building management system (BMS) software.

Overall, ground-mounted PV installations at all campuses contribute 2609 kilowattpeak (kWp) under standard conditions. The Bloemfontein Campus accounts for 979kWp of that amount while the South Campus generates 762kWp, with the Qwaqwa Campus producing 748kWp, and the Paradys experimental farm bringing in 120kWp to the grand total (to be commissioned June 2019).

Rooftop PVs generate electricity through the 80kWp Muller Potgieter Building, the 255kWp Bloemfontein Campus computer lab, the 35kWp Qwaqwa Campus computer lab, 135kWp Qwaqwa Campus Mandela Hall, and 416kWp Thakaneng Bridge panels. This is a total of 921kWp.

Winter is coming with tariff terrors

A 15.63% electricity tariff increase is projected this year in light of the annual winter adjustments commissioned by Eskom and Centlec. To gear up for the associated spike in power use over this season, University Estates advises the Kovsie community to use energy efficiently. “Think twice before switching on the heating and make sure to switch it off when you leave the office,” advises Esterhuysen.

In addition to generating electricity, saving initiatives such as implementing light-emitting diode (LED) lighting with motion sensors and actively managing demand at peak times have been implemented.

What’s next?

The next step is to rethink dated mechanical installations that are used to heat some of our older buildings. Replacing similar installations across all of the campuses are some of the ways the university intends to escalate energy efficient in future.

News Archive

Marikana and its subsequent economic and political consequences

2013-05-30

Dawie Roodt and Prof Adam Habib
30 May 2013

The Marikana incident is a bitter moment for South Africa's new political establishment; a tragedy on the same scale as Sharpeville and the Soweto massacre.

This is how Prof Adam Habib, Vice-Chancellor and Principal designate of the University of the Witwatersrand, described the sorrow during the CR Swart Memorial Lecture hosted by the Department of Political Studies and Governance.

Speaking on the topic The Post-Marikana landscape in South Africa, Prof Habib and Dawie Roodt, Chief Economist and Director of the Efficient Group, gave their views on the political and economic challenges confronting the country.

Prof Habib, a well-known political commentator, explained to the fully-packed CR Swart Auditorium how this tragedy provoked a national soul-searching.

Referencing from his highly-anticipated book South Africa's Suspended Revolution, Hopes and Prospects, Prof Habib said the difficulty Marikana poses is the challenge of inequality. According to him, inequality is the single biggest challenge of the South African society. He firmly believes that taking responsibility for poverty is a moral necessity. "Addressing poverty is absolutely crucial if we want to be a humane society."

In his presentation, Roodt informed the audience regarding recent data on population growth, unemployment and dependency ratios. These statistics gave an indication of how the country is doing. The economist said the only way to address unemployment, inequality and poverty is through economic growth.

"If we want to do something about inequality, we have to do something about skills – particularly skills for women. We must make it easier for people to get jobs," Roodt emphasised.

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