Play your part: 8 tips for saving electricity and cutting energy

The Cape Town CCID has launched its new public campaign with step-by-step guide to saving electricity in Cape Town.

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Abstract This study examines a set of energy policy interven-tions, which can make a major contribution to sus-tainable development for the City of Cape Town – economically,

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G Heinrich3. Where Cape Town gets its energy supply from5. Forward-looking energy policies5.1 Energy savings Many of the policies outlined above improve effi-ciency.7 Using less energy to deliver the same level of service means energy savings. Since energy costs money, these savings translate into cost savings as well – which we report later in the cost comparison. The annual energy savings which the different policies can achieve are reported in Table 8. This table reports in common units (TJ = 1012 J) or 3.6 million kWh, for those more familiar with electricity units. Common units enable a direct comparison across policies using different fuels – e.g. the impact of saving litres of petrol to reducing electricity con-sumption.5.2 Local air pollutants Having considered the energy savings, we turn to environmental implications of the policies. Energy use has particular implications for global and local air pollutants. Of all the local pollutants, we consid-er sulphur dioxide (SO2), a contributor to acid rain, and total suspended particulates (TSP), which con-tribute to Cape Town''s ''brown haze'' (Dutkiewitz & De Villiers 1995; Wicking-Baird et al. 1997). The major sectors that reduce local pollutants are those that use fuels directly. By contrast, elec-tricity is clean at the point of use, but very large quantities of coal are burned elsewhere – and pro-duce global pollutants (see the next section). Sectors relying mainly on electricity, such as office and government buildings, produce little local pol-lution. Table 10 shows potential reductions by key policy in the transport and industry sectors, both of which use significant amounts of non-electric fuels. A few policies also reduce total suspended par-ticulates (including particulates of different size, PM-10, PM-5 and PM-2.5), notably the modal shift in transport. Smaller reductions are seen in Table 11 for installing ceilings in the residential sector and the efficiency improvements in industry partment of Chemical Engineering, University of Cape Town Abstract This study examines a set of energy policy interven-tions, which can make a major contribution to sus-tainable development for the City of Cape Town – economically, environmentally and socially. Major energy savings can be made from modal shifts in the transport sector, and with e...See more on open.uct.ac

Energy conservation

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Krannich Solar Energy

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