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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

South African citizens are yearning for a good story to tell

2014-03-13

Dr Sethulego Matebesi
Photo: Sonia Small

The 20 Year Review is in essence a continuation of President Jacob Zuma’s State of the Nation Address and the ‘we have a good story to tell’ narrative. The report provides a glowing picture of successes achieved over the two decades. The successes highlighted include the basic human rights enjoyed by South Africans, a marked improvement in economic growth, and the provision of social services such as health care, education and housing. And as expected, the Review is dedicated to Nelson Mandela.

The major accomplishments were made through the strategic policies of the ruling African National Congress (ANC). For example, emphasis has been on improving the lives of South Africans through pro-poor economic interventions, in building social cohesion, investing in economic infrastructure, fighting HIV and AIDS and tuberculosis, which resulted in improved health outcomes.

Generally, the assertions about ‘accomplishments’ have been made against solid evidence and are thus not debatable. What overshadows the 20 Year Review, is the story that is not being told. This is the story of a political economy marred by rampant corruption, high levels of unemployment, declining accountability, and unresponsiveness. This untold story has become the hallmark of President Zuma’s tenure. Meanwhile, the average South African citizen is still yearning for ‘a good story to tell.’

For more political comment or to speak to Dr Matebesi, please call René-Jean van der Berg at +27(0)83 645 5940.

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