A simple idea that works

topic posted Sat, September 8, 2007 - 9:03 AM by  william
A national "big box" home improvement center had a sale on 4 solar yard lights for $9. I set them in the sun during the day and bring them in to light my apartment at night.
posted by:
william
Texas
  • Re: A simple idea that works

    Mon, September 17, 2007 - 10:45 PM
    Can you read by the light? I get the impression that the outdoor ones are mostly to cast a glow or create ambiance or take away the darkness enough for a person not to fall on their head at night.

    Anyone know the breakeven on the energy savings versus purchase price? William got his for $9 for 4, which is pretty freakin cheap, and my impression is that the cost and effort pay off pretty quickly. I estimate the "typical" purchase price is around $30 based on a previous poster's link. I rarely pay as much as $30 for an entire month's power (lights, tv, washer, fridge, etc.) so just ballparking the breakeven for me seems to take a long time. Add the labor required to move the lights in/out every day and potentially to create a stand for them and it's not a choice for me.

    Obviously a personal choice. This idea is really creative and I think a great inspiration from walking through the store. I hope the idea really works out for those of you who go for it.
    • Re: A simple idea that works

      Tue, September 18, 2007 - 1:11 AM
      those are pretty lights, bobz! (my beef would be how unattractive many of those lights usually are..)

      you could order extra stands, and the surplus length could be bent into a loop and then fastened to the wall quite easily/attractively.

      I do agree that the actual light output is probably lower than our usual,- you can easily compare though by reading the bulbs energy outputs/consumptions.
      I have a number of bulbs on the lowest power output, for halls and dark corners etc, or I could imagine using one in the shed or barn.. Since I am into sustainability and environmental protection, I much prefer getting solar power to getting nuclear power or power made from oil, which is the bulk of the electricity production worldwide.. so cost saving isnt my biggest concern.
      • Re: A simple idea that works

        Tue, September 18, 2007 - 10:16 AM
        Excellent point Jana... have you looked into the energy/materials requirements of manufacturing PV cells for the sustainability of the technology? I understood their environmental/resource payback exceeds their useful life (i.e. it takes more energy to make the thing than it harvests). Old info though and I'd love to know if the process has been made more efficient since I heard (about a year ago -- I'm sure the tech on this stuff is evolving exponentially). Again, this is probably more for the units at $30 each.... if you can get them 4 for $9 the math totally works for the lights.

        On the pro-PV side, contributing to the demand of the product certainly helps keep the evolution of the technology moving, so even if it's not the perfect product YET, buying the stuff certainly will help it to be in the future.
        • Re: A simple idea that works

          Thu, September 20, 2007 - 5:42 AM
          yeah cathy, its a twisted tale... sigh, but as you point out, there is much to be said for just "supporting the cause..",- especially as so much of it hinges on politics, subsidies and taxes..- and polititians will go where they an score popularity with the potential voters, which are consumers.

          so we can influence policy and sustainability by supporting the solutions which are at least headed in the right direction..

          there have been a couple of breakthroughs in science regarding solar panels, see the alternative energy and solar power tribe, I specifically remember a thread about polarisation being a major factor for reducing cost and end waste..
      • Re: A simple idea that works

        Thu, September 20, 2007 - 12:24 PM
        With the ones I purchased, the top part containing the solar panel and battery can be seperated from the "globe" / stake part. I tried putting this on top of one of the cheap paper & wire japanese lantern things and was rewarded with a nice 16" diameter glow.
        • Re: A simple idea that works

          Thu, September 20, 2007 - 2:41 PM
          I'm not so concerned with breaking even right away as I am with consuming less energy and has been pointed out supporting the technology. I like the out doors ones as I can hang them out in the morning (and not worry about the weather) and move them back inside when I get home from work in the evening. Then I can hang them around the house and or/carry one with me from room to room,
  • Re: A simple idea that works

    Fri, September 21, 2007 - 3:26 PM
    If you are going to buy yard lights anyway, then yes this is a good idea.

    The problem is that you are looking at a very high ratio of extra plastic relative to the components you actually want to use. You get a net increase in overall material consumption, and of a particularly environmentally damaging material.

    If you are doing this just as a way to do some form of solar energy for lighting then it is not such a great idea because you are still buying and consuming more resources than you would if you just bought a photovoltaic panel and hooked it up to a battery that you use to power your lights, especially if you use LED lights as are found in the yard lights you mention. Overall it would also be far more efficient to place the panels outside, run wires into the house, and have the battery inside. Consider that there will also be a net energy loss for either heating or cooling any object you bring into the house as it is almost certain to rarely if ever be at the temperature you desire in the house. So you have more energy loss by carrying any object in and out of the house, and for opening and closing the doors as you do so as well.

    Of course if you could buy just a small light module like what is in the top of the yard light units then you would begin to approach the efficient method I just described, other than the heating/cooling losses I mention.
    • Re: A simple idea that works

      Fri, September 21, 2007 - 5:45 PM
      The point was - look for good deals. They were a closeout. They wouldn't be stocking any more because they WEREN"T selling <no sell - no more being made>. I doubt you could build the system you describe for $9. AND, as W. C. Fields "who put all these wires on the lawn"?

      Lastly, I do have other solar panels supplying alot of my needs.
      • Re: A simple idea that works

        Sat, September 22, 2007 - 6:46 AM
        Actually, using mil surplus small pv panels of only a few inches long or wide and an old riding mower battery I was able to build a nice LED light system for about $1.50

        A small light module such as I mentioned that is in the top of such units can be manufactured for less than a dollar, in fact in large enough quantities it would cost under 10 cents.

        But yes, with these other considerations your idea works for your specific needs.
        • Re: A simple idea that works

          Sat, September 22, 2007 - 7:30 AM
          How much did those surplus panels cost new and what is there carbon footprint? What chemicals do they contain? And, finally why does 21st century man need light anyway. If it is dark, why don't we simply go to bed.
          • Re: A simple idea that works

            Sat, September 22, 2007 - 8:30 AM
            re: "If it is dark, why don't we simply go to bed. "

            Here here!
            Not too far in the future, I think, that WILL be the case.


            which reminds me.
            Last night a friend and I were on a blissfully dark natural hillside overlooking the Denver metro area, and we couldn't help but notice the blindingly bright lights from car dealerships.
            What an immense waste. The brightest lights in the entire city are used for lighting car lots.
          • Re: A simple idea that works

            Fri, September 28, 2007 - 3:54 AM
            Irrelevant questions as these are being recycled and reused, not new manufactured.

            Why need light? Little things like emergencies. Essential human services and safety.

            I do however agree that the vast majority of what we see at night as light is purely wasteful, such as the stupidity of the lighting used at dealerships, which are often built in areas that have been recently raped by developers with new houses, shopping centers and such.

            The majority of energy use after dark is by and for things which are at best marginally useful to the world at large.
            • Re: A simple idea that works

              Sat, September 29, 2007 - 5:01 AM
              You have just proved my point. These small solar lights provide a small amount of light which allows one to navigate thru their living space (bathroom, check the kids, etc.) without turning on more fuel inefficient lighting. Having candles burning ALL night would be inefficient at best, dangerous at the very least, and costly. And again, they're solar, easily replenishable, mobile and should have a long life expectancy - very simple. A good analogy is a hammer. While they require a larger bit of energy to manufacture, they are much handier than a rock when putting nails into a board - and, hammers <like plastics> too will be here long after the demise of man.
              • Re: A simple idea that works

                Tue, October 2, 2007 - 8:05 PM
                Certainly, and in that regard I agree with you completely. I'm not saying you are completely flaky with your ideas, just looking at ways to do it even better. Hell, I'm glad to see you thinking about this stuff and working on improving how you live.

                It's certainly better than what so many people are doing.

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