MTN installs huge solar plant

The mobile operator has installed a large concentrating solar cooling plant at its head office to cool its data centre facilities.


MTN has launched a concentrating solar cooling plant at its head office in Roodepoort, west of Johannesburg. The plant will be used to cool the company’s data centres. The facility generates enough electricity to power 350 average-sized homes.

The plant uses a technology called Linear Fresnel Concentrating Solar Power, which uses heat generated from the sun and has a peak cooling capacity of 330kW. A spokesman for MTN says the system will prevent 218 tons of carbon dioxide being emitted annually. It will also save R1m/year in costs, MTN said, though the mobile operator has not disclosed how much it has invested in the facility.

The project forms part of the worldwide “dena Solar Roofs Programme” coordinated by the German Energy Agency and supported by the German federal ministry for economic affairs and energy.

The system is made up of 242 solar mirrors covering an area of 484sq m. These mirrors track the sun to generate pressurised hot water at 180 deg C. The hot water in turn powers an “absorption chiller” that produces chilled water circulated into the data centre for cooling IT equipment.

The mirrors follow the movement of the sun, based on GPS location, orientation and the date and time. This information guides the system to track the sun to concentrate on the central absorber tube where heat is generated.

The absorption chillers employ a lithium bromide water solution, which uses water as the refrigerant.

When it rains, the mirrors move into a self-cleaning position and on cloudy days, the mirrors turn down into a protective stow position.  — © 2014 NewsCentral Media

Share this article

Why TechCentral?

We know that as a prospective advertiser, you are spoilt for choice. Our job is to demonstrate why TechCentral delivers the best return for your advertising spend.

TechCentral is South Africa’s online technology news leader. We don’t say that lightly. We believe we produce the country’s best and most insightful online tech news aimed at industry professionals and those interested in the fast-changing world of technology.

We provide news, reviews and comment, without fear or favour, that is of direct relevance to our fast-expanding audience. Proportionately, we provide the largest local audience of all technology-focused online publishers.

We do not constantly regurgitate press releases to draw in search engine traffic — we believe websites that do so are doing their readers and advertisers a disservice. Nor do we sell “editorial features”, offer advertising “press offices” or rely on online bulletin-board forums of questionable value to advertisers to bolster our traffic.

TechCentral, which is edited and written by award-winning South African journalists, cares about delivering top-quality content to draw in the business and consumer readers that are of most interest to technology advertisers.

We’d like the opportunity to demonstrate the value of directing a portion of your advertising budget to TechCentral, whether your company is in the technology field or not. Numerous opportunities exist for companies interested in reaching our audience of key decision-makers in South Africa’s dynamic information and communications technology sector. We offer packages that will deliver among the best returns on investment available in the online technology news space.

For more information about advertising opportunities, and how your organisation can benefit by publicising itself on TechCentral, please call us on 011-792-0449 during office hours. Or send us an e-mail and ask for our latest rate card and brochure.