Rainwater Harvesting
It is now viable to harvest rainwater for your whole household. This includes rainwater harvesting, storing and pumping rainwater for bathing, showering, toilet flushing, pool, laundry and irrigation. Rainwater harvesting together with other Water Rhapsody products can save up to 90% of your water bill.
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Category Archives: Solar Energy
Fascinating Facts about Energy
Science Energy cannot be created or destroyed. It can only be converted from one form to another. Find an elastic band, and stretch it out. The stretched rubber band has potential energy. If you let it go, it moves and has kinetic energy. Have you ever wondered how you might get a hot air balloon to float up and down? How would you launch it? How would you get it back to earth? The balloon rises by warming up the air inside it. It descends by letting the air inside it cool down. It all works because of heat energy. Electricity travels at 300,000 km/sec. If you travelled that fast, you could travel around the world eight times in the time it takes to turn on a light switch. The energy produced by the atom-splitting of one kilogram of uranium is equivalent to the burning of 1.3 million kilograms of coal or 1.35 million litres of oil. People run on energy too, and food is our fuel. The unit we use to measure expended heat energy is the calorie. Calorie expenditures comparison: Lying at ease – 1.5 cal/min Tennis – 7 cal/min Playing drums – 4–6 cal/min Golfing – 6 … Continue reading
Posted in Energy Saving, Green, Renewable Energy, Solar Energy, Solar Power, Solar Water Heating, Water Tanks
Tagged Electricity, Energy, going green, Hot Air Balloon, Hydrogen Nuclei, Interesting Facts about Energy, Natural Resources, Saving Electricity, Saving water, Water tanks, Yes Solar
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Interesting Facts about Electricity
History The first windmills were developed in Persia in about 600 B.C. About 200 years ago, Alessandro Volta discovered that when two strips of different metals were put in a sulphuric acid solution and connected with a wire, electricity began to flow. Voila! The first electric battery was developed! Think of him the next time you pick up your battery-operated CD player or Game Boy. In 1879, just over 100 years ago, Thomas Edison invented the first light bulb. (Thomas Edison didn’t invent the first light bulb – but he did invent one that stayed lit for more than a few seconds. Think of the incredible changes it has brought to our current world! The first windmill to produce electricity was in Denmark in 1890. In the past, frightened sailors voyaging at night saw ghostly phantoms of bluish light dancing on the masts of ships. Called Saint Elmo’s fire, the light is actually a form of static electricity. In 1986, an accident at Chernobyl, USSR, sent radioactive material into the atmosphere and raised concerns about the production and storage of radioactive waste. What is a kilowatt hour? When we buy petrol, we’re charged per litre. When we buy electricity, we’re … Continue reading
Posted in Green, Renewable Energy, Solar Energy, Solar Water Heating, Water Tanks
Tagged Compact Fluorescent Lightbulbs, Green Power, Interesting Facts about Electricity, Kilowatt Hour, Light bulbs, Natural Resources, Saving Electricity, Solar geysers, Solar power, Thomas Edison, Water Rhapsody, Yes Solar
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South Africa Solar Challenge
The South African Solar Challenge 2010 is an ambitious, two-week race in solar-powered cars throughout South Africa from the 20th September to the 2nd October. Teams are to build their own cars, design their own engineering systems and race those same machines through the most demanding terrain that solar cars have ever seen. The South Africa Solar Challenge promotes renewable energy technologies (specifically photo voltaic or “solar cells”), educational excellence in science, engineering and mathematics and creative integration of technical and scientific expertise across a wide-range of disciplines. The challenge is also a hands-on experience for students and engineers to develop and demonstrate their technical and creative abilities. Yes Solar were lucky to catch up with the Japanese team in Jeffrey’s Bay on the 29th of September. We were astonished by the speed of this little car and were told that it reached a top speed of 171km/h at one stage during the challenge. They however stay within the speed limit as this is one of the rules of the race. The race end in Pretoria at the Innovation HUB (Arriving from 10am to 5pm)
Posted in Solar Energy
Tagged Saving Electricity, Solar, Solar panels, Solar power, Yes Solar
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Ways to reduce your electricity bill Step three:
Get a geyser blanket The exact savings are hard to predict, but fitting a geyser blanket around your geyser and insulating your hot water pipes is recommended, says Palmer, as these prevent heat loss when the geyser is switched off. Geyser blankets range in price from R90 to R400 – only buy those that are SABS-approved, Eskom-endorsed and flameproof. DIY kits are available but it’s easiest to ask a plumber to install the blanket, at a cost of roughly R250–R450 per hour (it shouldn’t take longer than an hour). For more information, go to www.eskomdsm.co.za.
Posted in Energy Saving, Green, Solar Energy, Solar Geysers, Solar Power, Solar Water Heating, Water Tanks
Tagged Electricity price increase, Geyser Blanket, Reduce Electricity Bills, Saving Electricity, Solar geysers, Solar panels, Solar power, Solsquare, Water Conservation, Waterwise, Yes Solar
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Ways to reduce your electricity bill – Step Two:
Switch to gas Gas is used extensively for cooking and heating in other parts of the world, but here in SA, we have no pipeline gas, says Palmer. You will need to buy a Liquid Petroleum Gas (LPG) canister which fits your appliance. A refundable deposit is required for the ongoing use of the canister and you refill it at your nearest gas outlet (see www.totalgaz.co.za; www.afrox.co.za; www.easigas.co.za). Remember, as LPG is 100% derived from oil, its price fluctuates with the oil price. Says Terence of The Gas Experts (www.gasexperts.co.za ), you can purchase a good, safe four-burner gas hob for under R2 500. For a family of four living in a basic townhouse, a 9kg bottle of gas can last up to nine months, costing R200 a year to run the hob. A medium-sized gas water heater, retailing for R3200, will use a 48kg bottle of gas (costing R790) approximately every two and a half months. Installation of a gas stove and geyser will cost around R4500 (excluding the bottles). To keep warm, gas heaters and fireplaces are cost- and energy-efficient.
Posted in Energy Saving, Renewable Energy, Solar Energy, Solar Geysers
Tagged Eastern Cape, Gas, Saving Electricity, Solar, Solar geysers, Solar panels, Solsquare, Yes Solar
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Ways to reduce your electricity bill – Step One:
Opting off the grid To live off the electricity grid, says Duncan Palmer from the Centre for Renewable and Sustainable Energy Studies, you need a number of solar panels, a wind turbine (depending on where you live), an inverter and some batteries. ‘Solar energy from the sun is harvested with photovoltaic (PV) panels, which convert the solar energy directly into electrical energy. An electrician wires the inverter into your existing electrical reticulation circuit.’ ‘To sustain normal electricity habits and supply a regular house, you will need about 6kW of PV panels, which will cost around R210 000,’ says Riaan Meyer, from the Centre for Renewable and Sustainable Energy Studies at the University of Stellenbosch.‘Adding the inverter, batteries and other components will up it to R500 000 – pricey, but you’re investing in 20 years’ worth of electricity.’ But while an entire solar power system may be out of reach of most people’s budgets, there are some simple steps you can take to lighten the load. According to Eskom, a household’s largest electricity expense is water heating, which typically accounts for 40–50% of the monthly bill. Installing a solar geyser system to cater for the needs of a family of four … Continue reading
Benefit from SWH Rebates while you can
Eskom generates about 95 percent of the electricity used in South Africa. The company has been battling with electricity shortage since January 2008, but its problems date a decade earlier and are due to lack of investment in new capacities and in updating the existing power stations. Last year, Eskom increased its tariffs by 31 percent and asked for 35 to 45 percent annual increases for three years in order to scrape together about R400 billion needed to build new power plants. However, in February 2010 the National Energy Regulator of South Africa (Nersa) approved lower increases: 24.8 percent for 2010/11 financial year, which will bring the average Eskom electricity price to 41.31c per kWh; 25.8 percent for 2011/12, bringing the average Eskom electricity price 51.68 c per kWh; and 25.9 percent in 2012/13, making the average Eskom electricity price 65.06c per kWh. Eskom will use part of the money it gets from the higher rates towards increasing its solar water geyser subsidies, from about R2,500 to about R7,000. The cost of subsidizing solar geysers is lower than the cost of building a new power station. With the new subsidy in place, almost half of the cost of a solar … Continue reading
Posted in Energy Saving, Renewable Energy, Solar Energy, Solar Geysers, Solar Water Heating
Tagged Energy Saving, Eskom Electricity Increase, Eskom's DSM Programme, going green, Solar Geyser Suppliers, Solar geysers, Solar power, Solar Water Heater Suppliers, Solar Water Heating Rebate, Yes Solar
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50% Renewable energy by 2030 for South Africa – WWF
One-half of South Africa’s electricity generation could come from renewable energy sources by 2030, the World Wide Fund for Nature (WWF) said in a new report on Tuesday, 10 August 2010. “Renewable energy is not just an environmental issue anymore. It is about assessing the health of our economy going forward,” said WWF climate change programme manager Richard Worthington. He said that reaching the 50% renewable energy target by 2030 was distinctly feasible, despite the country’s heavy reliance on coal to produce electricity, and added that it was necessary to ensure low-carbon re-industrialization, which would be required under emission reduction commitments in the climate change arena. The report, entitled ‘Renewable energy in a just transition to sustainable electricity supply’, argued that South Africa had the potential to rapidly upscale its use of renewable energy, and with a combination of energy-efficiency measures, this would result in cheaper electricity over the medium term. The report also introduced the sustainable national accessible power planning (Snapp) tool, which was commissioned by the WWF, and was freely available on the Internet. The Snapp tool allowed for interrogation of government’s proposed energy plan, and allowed for the modeling of different energy scenarios, depending on the different inputs made. … Continue reading
Why Solar Energy in South Africa?
There are 5 Good reasons to use solar energy in South Africa: Power Shortage: South Africa cannot meet the energy demand in the country only with existing power generation capacity. South Africa must safe 10% on its electricity bill. Former finance Minister Trevor Manuel announced various steps and measures in his February 2008 budget speech which includes: ¨ Levy on electricity generated from non-renewable sources, such as generators. ¨ Promised to consider tax incentives for clean energy. ¨ Tax relief for generation of electricity from amongst others sunlight. Eskom has announced delays in quoting and perhaps supplying only part or none of the electricity requirements for new developments and requirements for permits. 2. Rising Energy Cost: Electricity costs are very low in SA, but Eskom forces a 25% price increase per annum over the next four years. Diesel price increased more than 200% in the last 4 years and will continue to do so for the unforeseeable future. (Source: Stats AS 2007) 3. Independence from providers: Solar energy ensures continued power supply on key appliances at home or in the office, thereby mitigating damage during power surges and outages. It reduces the household reliance on Main Grid Energy … Continue reading
Solar Water Heating
People have been using solar power for many years to heat up their water, light up their homes and for general low-voltage appliances. Solar power energy is now more easily accessible to the public than ever before, and millions of people around the world are installing solar geysers in their homes in order to save money on electricity consumption and thus helping the planet. Converting your home to use solar power can be a considerable undertaking, but the results are very rewarding. Going solar is a growing trend, but where do you begin the process? Solar power systems use energy from the sun – which is an unlimited source of renewable energy – and convert it into electricity or heat. The most practical place to start the process of conversion is with the installation of solar geysers on your roof. Solar water heaters use a roof-mounted, heat-absorbing panels (thermal collectors) to heat water with the power of the sun. The heated water is fed into a special solar geyser that stores the water. Firstly, you should find the most appropriate position suitable on your roof. The solar panels should not be shaded either by trees or any other obstacles. Even if … Continue reading
