Have you been thinking of going greener at home but haven’t got around to it yet. Eskom’s latest residential rebate program might be just the incentive you need. They are offering to replace existing halogen downlighters with LED lighting alternatives for free! If it seems too good to be true check out the details as laid out by Eskom’s service provider on this project. Continue reading
Summer has arrived with blast in Cape Town and we’re all wilting. Any way of keeping the house a degree or two cooler would be a blessing. So we have another reason to look at switching to LED bulbs to light up our homes: they are much, much cooler than incandescent light bulbs.
The old incandescent light bulbs are very inefficient in the way they convert electricity to light, giving off quite a bit of heat in the process. This means that several bulbs lit for an hour or two will contribute to the heat build-up in a room quite significantly. Statistics I’ve seen estimate that just one bulb lit in a small, closed, unventilated room would up the room temperature by 6C over one hour. Now normally the room would be ventilated so the heat rise would be less but even so, who wants even one more degree of heat when it’s already sweltering?
LED bulbs on the other hand remain cool when lit, using the electricity far more efficiently to produce light not heat. So they aren’t adding to the sultry summer temperatures; besides the fact that they use far less electricity to run. Find out more about switching to energy efficient LEDs by contacting a specialist in LED lighting, who will be able to give you more idea of the best options currently available.
Earth Hour looks set to soar to new heights of enthusiasm and participation this year. Their ‘I Will if You Will’ campaign has attracted a huge amount of interest. South Africa has been particularly inspired with celebrities pledging all sorts of crazy or fun things for Earth Hour in return for various pledges of eco-friendly actions in return.
The focus for 2012 is on promoting long-term changes in behaviour to help the planet. Turning off your lights for one hour may not save much electricity in itself, but becoming aware of what you are using and committing to saving energy in the long term is the ultimate goal.
While it is tempting to celebrate with a candle-fest, remember that ordinary candles are made from petroleum products, so have their own effect on the environment. Either use natural beeswax or soy candles which are less polluting, or go for the clean energy of solar lanterns if you want to create a romantic low-light atmosphere for the occasion.
So start getting ready for Earth Hour by equipping yourself with natural candles or solar lighting and then as a bonus you’ll also be ready and prepared for any involuntary power outages that come our way this winter!
I first saw these fun solar lamps on urban sprout. I thought it was a great idea but then promptly forgot all about them.
A little while later my sister-in-law returned from the Design Indaba in Cape Town with one for us as a present, saying it was the best thing she saw there.
So last night in addition to our usual candle at supper we had the glow of our very own solar jar. It came already charged, so I haven’t had time to assess how long the light lasts for on an average solar charge, but last night at least it shone surprisingly brightly for several hours.
The jar is now charging outside on the grass – it’s a lovely sunny day so hopefully it should reach its maximum charge to shine again tonight. A great idea, only depending for maximum efficiency on us remembering to put it outside to charge.
Edited to add: Two days later it has been recharged outside and is still shining brightly for as long as we need it every evening. The ‘boys’ took it apart and approved of its construction, sturdy batteries and LED light bulbs, so altogether we think it is great value for money. And pretty cool too!
Buy solar jars online direct from Consol’s Solar Jar website if you want to try them out for yourself. Or they are available from the Consol retail outlets in Stellenbosch and Woodmead, Gauteng.
At last there are companies producing small wind turbines suitable for domestic use, which could be the solution for families wanting to go off-grid, or at least generate a substantial part of their own energy needs.
With the abundance of wind in our local climates, a wind turbine can produce enough energy to power a home, especially if it has back up from solar power when it comes to water heating.
One company, Psiclone Renewable Energy Solutions has produced two types of domestic wind turbine – one to be used completely off-grid, which has a battery for storing excess power produced; the other version ties into the grid, enabling excess energy to be returned to the grid.
Though much of this is developed with rural areas in mind, some models are compact enough to be mounted on the roof in urban situations. Combine your own clean energy source with other energy saving solutions like LED lighting and energy efficient appliances and you could be well on the way to a carbon neutral way of living.
As with many alternative energy solutions the draw-back is the initial cost of instalment; however if you add up your monthly energy bills and consider that all your future energy will be free, it doesn’t take a mathematical genius to discover that the installation costs will have paid for themselves in about two years or so. Plus you will have a clean, sustainable energy source to weather future power outages, price hikes and all the doom and gloom predictions of power shortages.
Now it’s just a question of whether you can handle all your friends and neighbours descending on you every time there’s a power outage in the future!
LED light bulbs are moving into the main stream now – anyone looking for energy saving light bulbs for the home, can now choose between CFLs (compact fluorescent light bulbs) which used to be the only alternative to the old incandescent bulbs, and LEDs, the new kids on the block.
LEDs have plenty of advantages – they use much less energy even than CFLs, 30-50%more efficient; they last a whole lot longer, up to 50,000 hours as opposed to 10,000 hours, ten years of more of average use; they are far less fragile, being a solid lighting system – no delicate filaments or glass to shatter when the cat sends the lamp flying.
With regard to the cat disasters – we’ve found that the CFLs that we switched over to several years ago almost never have the life span they advertise. If the cat doesn’t knock over the lamp, scattering shards of glass and fragmenrts of mercury under the fett of kids and animals alike, then the all too frequent power surges or power outages put paid to several light bulbs each time – CFLs just don’t like extremes of temperature or being switched off and on too much. LEDs apparently are much more resilient.
The main disadvantage of LED lighting, now that the light quality is every bit as good, and often better than, CFLs, is price. LEDs still cost considerably more than CFLs. Even though LEDs work out to be the cheapest option long term, once you work out their life span and energy savings, it is still quite an initial expense to equip a whole house with LEDs. So the answer is to do your research before you buy.
While prices are coming down, it doesn’t work just to buy the cheapest brand from a supermarket shelf. As with any new technology there are cheaper, lower quality versions that don’t live up to the LED promise, and which are sure to disappoint. You need to inform yourself about the quality brands of LEDs first of all. In South Africa, some of the reliable brands available are CREE, Edison, Bridgelux and Epistar.
Next work out your requirements – do you need overhead dangling light bulbs, or spotlights, reading lamps or tube lighting. You will need to read the labels attentively to get an idea of light output, whether it is omni-directional or focussed light, warm or cool temperature. Check out this article written by a journalist trying out LEDs in his own home. The brand names available are different in SA but the choice is about as wide.
Next compare prices among the better quality brands. You will probably find they vary a lot, so find a specialist supplier that stocks the top brands at a reasonable price. Bargain basement is not a good idea when you are shopping for a product that you hope will last you 10 years or more.
One of the most reasonably priced suppliers of LED lighting in Cape Town that we’ve found is CandelaLED – they source direct from the manufacturers so are able to supply their LED light bulbs and general lighting at an affordable price. Because they specialise in LED they can also advise on the best product for each lighting situation.
And while replacing every light bulb in the house with LEDs is probably beyond the budget of the average householder, there’s no reason why you can’t commit to buying ,say, one or two LED light bulbs per month and gradually introducing a more sustainable lighting system in your home. That’s our plan at least!
If you’re confused by the latest developments in the energy efficient light bulb field, check out this article just published in the New York Times. In Almost Time to Change the Bulb, the writer, pen name The Pragmatist, examines what all the new lighting terminology means and then goes shopping for a variety of the latest energy efficient light bulbs to test in his home.
It’s very readable with plenty of humour and some user-friendly advice for anyone else about to embark on the great switch over.
LED’s score well for overhead and directional lighting, while he finds that some of the new halogens, though less energy-efficient, provide a better diffuse light . CFLs are also on his recommended list for some applications.
Of course all the brands mentioned in the article relate to the U.S., so if you are looking for more specific advice on the latest LED lighting technology available in South Africa, check out Candela LED, who have a good range of top quality brands.
Remember too that LED technology is developing rapidly, so we should see more advances in lighting quality and versatility, as well as a gradual reduction in price over the next while.