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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

Expert in Africa Studies debunks African middle class myth

2016-05-10

From left: Prof Heidi Hudson, Director of the Centre for Africa Studies (CAS), Joe Besigye from the Institute of Reconciliation and Social Justice, and Prof Henning Melber, Extraordinary Professor at the CAS and guest lecturer for the day.
Photo: Valentino Ndaba

Until recently, think tanks from North America, the African Development Bank, United Nations Development Plan, and global economists have defined the African middle class based purely on monetary arithmetic. One of the claims made in the past is that anyone with a consumption power of $2 per day constitutes the middle class. Following this, if poverty is defined as monetary income below $1.5 a day, it means that it takes just half a dollar to reach the threshold considered as African middle class.

Prof Henning Melber highlighted the disparities in the notion of a growing African middle class in a guest lecture titled A critical anatomy of the African middle class(es), hosted by our Centre for Africa Studies (CAS) at the University of the Free State on 4 May 2016. He is an Extraordinary Professor at the Centre, as well as Senior Adviser and Director Emeritus of the Dag Hammarskjöld Foundation in Sweden.

Prof Melber argued that it is misleading to consider only income when identifying the middle class. In his opinion, such views were advanced by promoters of the global neo-liberal project. “My suspicion is that those who promote the middle class discourse in that way, based on such a low threshold, were desperate to look for the success story that testifies to Africa rising.”

Another pitfall of such a middle-class analysis is its ahistorical contextualisation. This economically-reduced notion of the class is a sheer distortion. Prof Melber advised analysts to take cognisance of factors, such as consumption patterns, lifestyle, and political affiliation, amongst others.

In his second lecture for the day, Prof Melber dealt withthe topic of: Namibia since independence: the limits to Liberation, painting the historical backdrop against which the country’s current government is consolidating its political hegemony. He highlighted examples of the limited transformation that has been achieved since Namibia’s independence in 1990.

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