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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

Ground-breaking project scores Renewable Energy Award
2017-10-29

Description: ' 000 University Estates award Tags: University Estates award 

Marcel Theron, Former President: HEFMA; Nico van Rensburg, Senior Director:
University Estates (UFS); and Maureen Khati, Project Manager: Facilities
Planning (UFS) attending the HEFMA awards ceremony in Pretoria.
Photo: Supplied

University Estates at the University of the Free State (UFS) were recently awarded for their amazing initiative to install and operate photovoltaic (PV) and greywater systems on all three of its campuses. They were awarded by the Higher Education Facilities Management Association of Southern Africa (HEFMA), an association of facilities managers operating in the higher-education sector in the Southern African region. All universities and universities of technology in the country form part of this association, which promotes excellence in the planning, construction, maintenance, operations, and administration of educational facilities.

Nico van Rensburg, Senior Director of University Estates, says, “I want to thank HEFMA for this amazing award which motivates for much more and also opens up the doors for so many more opportunities.”

Solar and greywater systems installed at various buildings

In December 2016, 26 solar-driven LED street-light poles and a greywater system were installed at the Legae Residence on the South Campus. Greywater is made up of bath, shower, and bathroom sink water. The water is reused for toilet flushing, as well as for irrigation purposes.

On the Bloemfontein and Qwaqwa Campuses, the computer laboratories as well as the Thakaneng Bridge Student Centre and the expected Afromontane Research Centre have freestanding solar solutions mounted on their roofs. These systems are designed to operate independently of the power grid (Eskom) during sunlight hours when the PV solar panels are heated by the sun.

Teamwork equals ground-breaking results

“This was truly a team effort with a variety of role players who contributed,” says Van Rensburg. He believes that higher education can do more to make use of other environmentally sustainable initiatives, and to go beyond just erecting and renovating buildings.

The UFS executive management is also extremely proud of the team that were involved in the project. Prof Nicky Morgan, former Vice-Rector: Operations, says, “It’s been extraordinary what we could achieve at all three campuses with such a small team.” Nadeem Gafieldien, Director: Property Services at Stellenbosch University, showered the UFS with praise. “This is truly ground-breaking for Higher Education (HE) and you are truly leaders in these renewable energy projects in the HE sector.” He says we need to demonstrate to other institutions in the HE sector that this is the future and that it makes the institutions both environmentally and financially sustainable.

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