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  Environmental Benefits  

Some Interesting Facts
  Dramatic Western Cape Annual Rainfall History

Carbon Emissions – South Africa’s role


Globally and here in South Africa we are all facing rapidly growing problems environmentally and economically.

  • Increasing energy costs - fuel and electricity
  • Power blackouts
  • Water shortages
  • General financial pressure
  • Climate change
  • Air and water pollution
  Despite these seemingly insoluble problems, there are simple ways that we can all make a big difference to reduce the damage we are doing to the world our children will inherit.

Would you like to know how, every year, you could easily save over

  • 2 tonnes of carbon emissions
  • 2 megaWatt hours of electricity (would boil a kettle 15 000 times)
  • 1 tonne of coal
  • 90 000 litres of water, enough to fill 3 swimming pools
  and help prevent the massive waterway pollution from our overstressed water-treatment plants?

The first step is to make yourself aware of what impact your lifestyle has on the environment and then take steps to reduce it. Often those steps involve a simple change of habit.

One of the most cost-effective ways to becoming more environmentally responsible in your own home is to reduce your use of hot water, which for many households represents up to 45% of the power bill. This way you reduce water and power use at the same time. And by far the easiest way to do so is to fit an Oxygenics® eco-showerhead.

To calculate the savings to the environment, please go to our calculator and input your utility rates and other data into the boxes. If you need to know how to calculate your current shower flow rate, find out how to do so here.

The effects can be truly dramatic as you can see. All by making a very small effort. Just fit the showerhead and forget it. It is guaranteed for life not to clog or fail due to manufacturer’s faults. And you will save money too. It really is a WIN-WIN.

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  Some interesting facts

...About some currently available showerheads

The traditional small chromed showerhead that is widely available from plumbing merchants, is not eco-friendly as the South African based manufacturer would have you believe. (“Yes sir, any showerhead that is small is a water-saving showerhead” – this, from the staff in the R & D department!) This showerhead we have measured at about 30 LPM (litres per minute) at full flow, at a relatively low domestic water pressure (300kPa). In fact we only managed a single shower before the 100 litre geyser was empty, and so were not even able to perform a test on the difference in daily power and water consumption using this showerhead. We had to install a device to restrict the flow to 17.5 LPM to perform a comparative test.

At our test pressure of 300 kPa, the Oxygenics® showerhead flowed at 7.5 LPM. The test showed that the saving we would achieve in water and power bills was over R3000 per year and the environmental savings you see above.

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  ...About the relative cost-effectiveness of solar geysers

A 150 litre solar geyser and 2 square metre rooftop solar panel will generate about 7 kWatt hours per day, averaged through the year, and cost on average around R20 000.

Your Oxygenics® showerhead will save at least 6 kWatt hours per day if you shower rather than bath, and costs from R99 upwards.

This makes the Oxygenics® between 100 and 200 times more cost-effective as a way of saving power (including the longer payback period for the geyser, capital and interest).

And of course there are none of the water savings, both environmentally and financially.

But we emphasise that Eternally Solar fully supports the use of solar geysers – it is the next step after replacement of a water-wasting showerhead.

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  ...About the relative cost-effectiveness of renewable energy systems such as solar voltaic panels

On the same basis as the above explanation regarding the comparison between an Oxygenics® showerhead vs. a solar geyser, the relative cost-effectiveness of saving energy compared to a solar electric system with inverter and battery storage could easily be 700 times.

Once again, we would fully endorse the more widespread use of solar panels to generate power. But the reduction in the electricity we use through such simple and effective measures as Oxygenics® has to be the first logical step.

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...About the relative cost-effectiveness of switching to a Hybrid car from a standard average-sized car

In order to save over 2 tonnes of carbon emissions annually that you can save with your Oxygenics® showerhead, you could instead decide to buy a hybrid petrol-electric car.

You would need to travel between 25 000 and 40 000 km annually to achieve this saving. And bear in mind that a major USA study has found that the new generation hybrids are some of the worst environmental culprits when analysed on a full lifecycle basis. This has to do with the rapid new model turnover among many other factors. Surprisingly, some of the lumbering old 4x4’s that have been on the road for years have among the smaller footprints.

Things are not always as they appear at first glance. Eternally Solar does not support hybrid technology based on this analysis. We support massive investment in the development of sustainable and comprehensive public transport systems.

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  Rainfall in the Western Cape

oxygenics water saving showerhead energy saving showerhead electricity saving showerhead power saving shower head

The above graph (which has been published on this website for the past 10 years), shows the annual rainfall for the Western Cape since 1920.

The dashed blue line is the average annual rainfall over that period.

The two red ovals are two periods when the natural variation caused prolonged periods of drought, over a decade in each case. This was before global warming became a problem. It represents natural cyclical variation.

The green oval is the period from about 1990 through to the present and it shows a rainfall well above the average. This is the amount of rain to which we have become accustomed over the last decade or more.

The red dashed line in this otherwise rainy period was a brief single year drought in 2002. Cape Town was very close to completely running out of water.

The obvious problem is that in Cape Town we have become used to higher than average rainfall, that the population and use of water has dramatically increased in recent years, and that the natural cycle will repeat with prolonged dry periods. And all this, before the effects of climate change are factored in – the predicted effects on the Western Cape being more severe droughts in the future.

Imagine even two or three years of drought, never mind the 10-15 year ones that occurred just a few decades ago!

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  Carbon Emissions and South Africa's role

oxygenics water saving showerhead energy saving showerhead electricity saving showerhead power saving shower head

Annual South African carbon emissions relative to Rest of Africa 2007. (figures represent
million tonnes of CO2 and relative percentage of Africa total)
oxygenics water saving showerhead energy saving showerhead electricity saving showerhead power saving shower head

Annual South African carbon emissions relative to Rest of World 2007. (figures represent

millions of tonnes of CO2, relative percentage of global total)
  The pie charts show South Africa’s carbon emissions relative to the rest of Africa and to the rest of the world.

We produce over 40% of Africa’s emissions due to our heavy reliance on coal to produce electricity.

We produce less than 2% of global emissions, but still rank as the 12th largest emitter. And this is despite our economy being 28th in size. So we produce a lot more CO2 than we should based on our economic output.

This all means that we emit over a tonne of CO2 for every megawatt hour of electricity generated and that we don’t use our power very efficiently to generate economic wealth.

It also means that there are simple things we can do to reduce our emissions, by finding ways to use electricity more efficiently and not wasting our resources.

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  Drought, Water Crisis, oxygenics water saving showerhead energy saving showerhead electricity saving showerhead power saving shower head
Products and Details


How to!!!

Measure your shower
flow rate

Estimate your home
water pressure

Calculate your likely savings

Install your new showerhead


- © 2007 Eternally Solar CC -

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