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Solar Power From Home Curtains

kaliann writes "With the push for more sustainable energy, easy DIY kits for alternative energy sources are likely to become quite popular in the coming years. We may see some big improvements in our ability to 'green up' if these photovoltaic curtains become widely available."

14 of 239 comments (clear)

  1. But they only produce power-- by Geoffrey.landis · · Score: 4, Insightful

    they only produce power when the curtains are closed.

    --
    http://www.geoffreylandis.com
    1. Re:But they only produce power-- by xstonedogx · · Score: 4, Insightful

      I don't see the problem. During the summer, the curtains should be closed to block out some of the heat from the sun. During the winter, allowing the sun to heat your home is a more efficient use of that energy anyway.

    2. Re:But they only produce power-- by peragrin · · Score: 5, Insightful

      Exactly.

      Combine this with either solar hot water heater on our roof, or even more photovoltaic cells, possibly a 2 kw wind turbine and suddenly 50% of you average home power is being used by green energy.

      The coming energy crisis isn't going to be solved by any one thing, but dozens of small sub systems that work together. they don't have to be massive farms or fields either. just 30-50% of your home electricity is enough to offset the demand.

      --
      i thought once I was found, but it was only a dream.
    3. Re:But they only produce power-- by afidel · · Score: 3, Insightful

      Solar water heaters simply make no sense if you live in an area that hard freezes (a large percentage of the US). The designs that can cope with significantly cold temperatures for sustained periods cost about $3K plus specialized installation and they still require energy to power their pumps to fill the reservoir since it has to be drained daily during freezing periods. I REALLY wanted it not to be so, because I love being green when it makes sense and it would drop about $100-200 per year off my gas bill at current prices.

      --
      There are 4 boxes to use in the defense of liberty: soap, ballot, jury, ammo. Use in that order. Starting now.
    4. Re:But they only produce power-- by SlashTon · · Score: 3, Insightful

      There are a lot of comments of "great, close the curtains during the day to generate electricity that you then need to power the lights - because the curtains are closed during the day!".

      These are valid comments, but closing the curtains during the day (and missing out on the light) still makes sense during the week, for a large part of the population in the Developed World. In many (most?) households, the adults will be at work during the day and the kids at school. Lots of hours of sunlight where nobody is at home to care about light in the house.

      Ok, except your plants :).

      Many people also seem to dismiss 'marginal' savings like this out of hand, because they won't solve the growing demand and price of energy all by themselves. But I seriously doubt there is some magic bullet that will all by itself, suddenly make energy cheap and clean. I think it will have to be achieved in small steps and by combining lots of different solutions.

      The point I take away from ideas like this: if we can produce such things efficiently (ie: they will produce more energy in their lifetime than they take to produce - and I also mean taking into account raw materials somehow), then great! Even if it is only a few percentage points of personal energy usage. A few percentage points of a huge amount, is still a large amount. And combining several such things (good insulation, an efficient heater, affordable personal solar power, etc) adds up.

  2. I doubt it... by Darkness404 · · Score: 5, Insightful

    With the push for more sustainable energy, easy DIY kits for alternative energy sources are likely to become quite popular in the coming years.

    Two words. Doubt it. There are all kinds of ways to save money, but most people don't do them. To put it into a computer perspective, how many people do you know upgrade RAM? Out of that many how many do them themselves? How many people upgrade a CPU? How many people salvage CD-ROM drives from old computers? How many save old cases and build computers in them? Very few I would think. Same thing with these, they are a way to save money, but for most people they will just complain about high oil prices, try to get a raise, petition for an increase in minimum wage, repeat. These will be about as popular as running BSD on your toaster. You can do it, it might be cool, but most people don't see the need.

    --
    Taxation is legalized theft, no more, no less.
  3. I don't buy that we have a land shortage. by CrazyJim1 · · Score: 5, Insightful

    I know we're at a point where solar is looking like a good investment. Still... Isn't it easier for a solar contractor to just make large solar power plants to supplement the grid than worrying about the specifics of installing home to home?

    I'm all for the day when I can offset my electricity bills a small amount because I have my house decked out in solar material... I'd rather just have cheaper electricity though especially in the near future. Plugin, hybrid cars are going to start sucking on the power grid. If we don't add more solar or nuclear plants to the grid, we could see an electric shortage in the form of higher prices for one.

    Oh and I'm still bummed about the study the government is doing to make sure solar is environmentally friendly. I mean, isn't the waste output from coal plants harmful to the environment? If we had the option to cut that waste back, aren't we helping the environment?

    Anyway, the future looks bright to me. The US economy is holding even though it has taken some hits. If we can just get to a new era in surplus solar energy, we can get into some really interesting solutions to getting off oil. Some people think it will be hydrogen. Some people think it will be electric cars. I'm not sure which is going to take off in the long run. I think it is going to be hybrids that make the most initial impact because they don't have the limitations of the electric car's maximum range. For electric cars to have a long range, gas stations will have to be refitted with a tool to swap out battery arrays. Hydrogen faces a similar challenge in that it'd need special fill up stations too. Plug in hybrids work off traditional gas stations.

    I like Nanosolar's approach because it is so high tech and also economically feasable. Still low tech solar options such as parabolic mirrors to focus sunlight and run steam turbines could be good at first. I think we have a lot of unused land on Earth, and the faster we can cover it, the faster we can have surplus energy. Surplus energy makes transportation costs go down so you can travel all that you want even if you're poor. And even more interesting is that surplus energy lowers the cost of transporting food, so impoverished people can be supplied better. Oh yeah, and surplus energy also means that everything is cheaper so people have more disposable income which incidentally, also helps poor people.

    1. Re:I don't buy that we have a land shortage. by iamhigh · · Score: 3, Insightful

      I think we have a lot of unused land on Earth, and the faster we can cover it, the faster we can have surplus energy.

      Great attitude. I am no environmentalist or anything, but even I realize that humans have already had a HUGE impact on Earth. The Fish and Wildlife Service reports 1238 endangered species in the US alone.

      I agree that solar power is great, but how about we try to use existing surfaces such as high rise buildings, as someone else mentioned. How about those hybrids use solar car sun shades to charge the battery while your at work? I think a little thought would be better than just sucking the earth dry.

      --
      No comprende? Let me type that a little slower for you...
  4. You got it reversed by Anonymous Coward · · Score: 3, Insightful

    The trend is the other things will become more expensive. So you will pay, do not worry.

  5. Re:Hey. by SeaFox · · Score: 3, Insightful

    Why curtains?

    1. Because most people already have windows in their living space, and
    2. use curtains or blinds to block them at certain times.
    3. Curtains wouldn't require any extra installation hardware if the existing rod is strong enough,
    4. They wont make the outside of your house look ugly.
    5. They would be more portable than a solar panel installation on the roof.

    Is that enough?

    Why not something that's, you know, outside where the sun can get it.

    And hail, errant footballs, vandals...

    Glass blocks light, light that can't be seen.

    They still let in plenty of light than can be used for generating solar power according to my calculator.

  6. Worthless article by joocemann · · Score: 4, Insightful

    Unless they post the watts/hr it can produce under normal conditions. Its like seeing a car in a car lot without a price on it... You just keep on rollin. Seeing this 'form of energy coolness' seems worthless without some type of qualitative evidence. I want to see the watts/curtain/hr.

  7. Do us all a favor . . . by RustinHWright · · Score: 3, Insightful
    and don't lump everybody in together. I don't know what part of Fox "News" you get your information from, but speaking as an environmentalist and the son of an actual environmental scientist (yaknow, a real doctorate and everything), most of us out here in the reality-based consensus are more than willing to see all sorts of installations go in. In fact, the big party I went to last night had to work around the huge steel frames being built by some real world environmentalists I know to put in a few kilowatts of solar at a farm not too far away. And the rocket stove workshop currently underway in our building. And the several vehicles being stripped out and rebuilt as electrics or biofuel-optimized.

    Again, I don't know what world you're living in, but there are millions of us who are getting this stuff done as fast as we can, including plenty of real companies like Sequential, with stock and everything, who are making quite a nice living selling biodiesel and are already tying up every rational source of supply they can get their hands on. Oh, and those of us who understand things like cellulosic sources never thought that corn-based approaches were ever anything but yet another bit of agribusiness welfare.

    --
    It's all about the information. And what we do with it.
  8. Re:Oh, the myth of Solar. by RustinHWright · · Score: 3, Insightful
    Your math and your understanding both need some work. First of all, nobody is suggesting just randomly putting PV everywhere to "fix everything". While the average may make PV look like a bad idea, if you live in, say, Phoenix, Arizona, where there's plenty of sun year-round, PV works just fine.

    As people keep having to point out, nobody is presenting one form of sustainable power generation as some sort of panacea. Where it's windy, use wind; where currents and tides are strong, use hydro; where it's sunny, use PV, where there's trash land, grow switchgrass; and so on. And even beyond this, per capita demand is a result of many behaviors that people like me are working to change. It's not just about power generation. It's about all kinds of changes from better insulated houses to more mass transit, to eating more food that's grown locally. (Food is actually the biggest energy cost for many Americans.) This doesn't require moving into a teepee and living on uncooked twigs. It's possible to live very elegantly and very comfortably indeed in a sustainable way. We just need to make the changes that make that possible.

    --
    It's all about the information. And what we do with it.
  9. Junk by Confused · · Score: 3, Insightful

    Stupid idea, the whole gimmick.

    If you want to do solar power, better do it properly and mount decent solar cells in a place where it really can generate power (eg on the roof in the right direction with the right inclination).

    The idea of those curtains is just stupid, because you dole out good money to get some crappy cells which end up being mounted in a bad place.

    If you happen to live in a hot area, it would be far more ecological if you invested in some proper shading that the load on the air conditioning can be reduced. That saves more that those stupid curtains will ever produce. For the money saved, get decent cells on the roof.

    If you live in a cold area - usually with only few hours of good sunlight - the curtains are even more stupid, because they produce even less. Invest in good double or triple glazing to keep the heat in and catch the few sun-rays you get to heat the room.

    To sum it up, this junk gimmick is exactly what home shopping TV would try push to ride the eco-wave. Do the environment a favor and forget about that stupid idea.