Tag Archives: water efficiency

Investing in ‘water-less’ green solutions imperative — Greenpeace

Business Day Live 17 October 2012.

INVESTING heavily in renewable energy resources that did not use water would stimulate the South African economy and halve the amount of water consumed by South Africa’s energy sector, Greenpeace South Africa said in a report released on Wednesday.

South Africa is a net importer of water and has already allocated 98% of its available fresh water. It is estimated the country’s coal-fired power generation uses 4.84% of the national water supply. According to Eskom’s website, about 77% of South Africa’s primary energy needs are met with coal…

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Development plan sets water supply targets

Engineering News 15 August 2012.

The National Development Plan (NDP) 2030, which Minister in the Presidency responsible for National Planning Trevor Manuel on Wednesday handed over to President Jacob Zuma, has stressed the importance of improving water supply, use and management, highlighting a “growing concern about the potential impact of water-related risks”.

South Africa ranks 128 out of 132 countries in Yale University’s Environmental Performance Index and according to the United Nations ‘World Water Development Report 2012′, it ranks 148 out of 180 countries for water availability per capita.

The NDP has set a number of targets that had to be met by 2030 to afford all South Africans access to sufficient and safe water…


Creating efficiencies in the municipal water system in Nelson Mandela Bay

REEEP 11 July 2012.

The Nelson Mandela Bay Municipality (NMBM) in South Africa covers Port Elizabeth as well as the towns of Uitenhage and Despatch. The area is experiencing serious drought conditions, so there is an urgent need to save water and reduce the base load on the grid through technical and institutional improvements, especially in the current pumping regimen.


To increase energy and water efficiencies in the municipal water and sanitation systems of the metropolitan area of the Nelson Mandela Bay Municipality (NMBM) by improving pumping efficiencies through various technical interventions. The project will also draw on replicable projects from other major South African cities.

Main activities and outputs

  • Collect pump-station data and create database; assess pump stations; design and cost out needed interventions
  • Compile operational manuals for the pumped water and wastewater system
  • Enhance municipal capacity through selection and training (including mechanical, electrical, plumbing skills) of local “caretakers” to maintain pump stations
  • Develop a performance based contracting model for efficiency interventions in municipalities, that includes a five year “operate and maintain” requirement and commitment to carry out the recommended efficiency improvements
  • Establish a measurement and verification programme
  • Highlight project results and promote replication of the methodology in other South African metropolitan areas


Expected impacts

  • Reduction in the total annual energy consumption for the total cycle from raw water to wastewater in NMBM’s 74 pump stations  by at least 10%; currently totalling 77,117 MWh per annum.
  • Annual CO2 reduction equivalent to 7,542 tonnes /year (using electricity/CO2 emission factor of 0.978 Kg CO2/kWh) on a continuous energy savings of 0.88 MW
  • Improved financial standing for the municipality
  • Possible replication in other metropolitan areas such as Cape Town, Ekurhuleni, Johannesburg, Tshwane, and eThekwini, for national-level benefits to South Africa


This text is merely a summary and not authorised by the Project Partner. Please see ourGeneral Disclaimer for more details

The internal combustion engine dead? Think again, shows BMW

Engineering News 14 March 2012.

BMW South Africa’s (BMW SA’s) plant in Rosslyn has, since 2007, cut electricity consumption per 3 Series produced by 25%, waste by 50%, carbon emissions by 25% and water use by 50%, culminating in savings of R48.5-million…


VWSA cuts electricity use by 55%, expands support to marine research

Engineering News 18 November 2011.

Volkswagen Group South Africa (VWSA) has cut electricity use at its Uitenhage plant by 42% from 2009 to 2010, with a further 13% reduction achieved from 2010 to 2011, says VWSA communications GM Matt Gennrich