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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

Prof Moffett’s third book provides comprehensive guide to Basotho medicinal plants

2017-07-26

Prof Rodney Moffett’s three books documenting Basotho
plants, animals, and the history of the Free State and Lesotho.
Photo: Thabo Kessah

Prof Rodney Moffett has recently published his third book, Basotho Medicinal Plants – Meriana ya Dimela Tsa Basotho. This latest offering deals only with medicinal uses and is based on the data from his first book, Sesotho Plant and Animal Names and Plants Used by the Basotho.

“The latest book came about after a Sesotho language advisor in the Free State Department of Education suggested that there was a need for the medicinal uses of plants by the Basotho to be documented in the vernacular. In a situation where there is an almost total lack of scientific literature in the vernacular, the greatest value of this book therefore, is that it provides a comprehensive guide to the medicinal uses of plants in Sesotho,” said Prof Moffett, Honorary Research Associate in the Department of Plant Sciences on the Qwaqwa Campus.

Book lists names of plants in Sesotho
“It comprises two parts. Part one lists the medicinal categories and plants used, and part two lists the medicinal uses arranged according to the Sesotho names of the plants. It is easy to read, as the information is presented alphabetically with the Sesotho name first, followed by the scientific name and usage thereof. Because a plant often has more than one Sesotho name, the scientific name is included to identify it.”

Prof Chris Nhlapo, Deputy Vice-Chancellor of the Cape Peninsula University of Technology, and Prof Ntsamaeeng Moteetee from the University of Johannesburg are impressed with the book, respectively saying that it assists in documenting the deep indigenous knowledge of the “proud tradition of the Basotho Nation” and it is “an important contribution to the documentation of medicinal plant uses”.

The title of Prof Moffet’s second book was A Biographical Dictionary of Contributors to the Natural History of the Free State and Lesotho.

Prof Moffett was honoured with a Lifetime Researcher Award during the Academic and Research Awards on the Qwaqwa Campus in November.

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