In Minimalism, Money

Solar Light Bulbs: A frugal 55-watt light bulb?

light-bulbs-roof-cheap-water-bleach-inside light-bulbs-roof-cheap-water-bleach light-sun-water-refraction-bleach-bottle-roof-interesting-frugal

The cheap, solar-powered bulbs are actually just clear plastic soda bottles filled with a mixture of purified water and chlorine or bleach which is commonly used in household cleaning products.

Each bottle is then inserted halfway into a hole made on the roof of a house, and sealant is applied to prevent leaks and the end result gives the impression of a small, plastic chimney.

The bulb gives off light equivalent to a 55-watt electric lamp as the water inside the bottle refracts sunlight and other exterior light.

Interesting.

Impractical for Canada (snow? ice? polar bears?), but an interesting idea for a cheap lightbulb during the day in such homes.

Share Tweet Pin It +1

Sherry of Save. Spend. Splurge.

Am my own Sugar Daddy. Am a millionaire at 36 after getting out of $60K of student debt in 18 months, a little over a decade earlier, using TheBudgetingTool.com. I have worked 50% of my career (taking 1-2 year breaks), and quadrupled my income within 2 years of graduating, going from $65K to $260K with an average lifetime savings rate of 50%. I have 11 side incomes that are on track in 2020 to make me $50K - $75K. I could retire today if I wanted, but love my work-life balance as a freelancing consultant in STEM (Science, Technology, Engineering, Math). I am all about balance - between time and money, and also enjoying my money. I also post daily on Instagram @saverspender.

You may also like

The Cheapest Thing I’ve Ever Done.

Posted on April 4, 2017

Previous PostYou think you're being frugal, but you're not
Next PostHow many toxic chemicals do you slather on your face each morning?

5 Comments

  1. MelD

    Note to self: should research before commenting!

    The link is http://www.sodis.ch/index_EN

    Reply
  2. MelD

    I saw this a couple of years ago and thought it was brilliant.

    Also the idea developed by some Swiss students to use PET bottles to disinfect water: it is just laid in the sun for a certain time and something like 90% or more of the germs are destroyed by sunlight. I think they now found that it’s even better if part of the bottle is painted black. Must find out a good link for it, sorry. I just think using a waste product usefully is so clever…

    Reply
    1. save. spend. splurge.

      THANK YOU! What a great link and idea.

      Reply
  3. MattNY

    Nice idea, at least temporarily. After a while the UV in the sunlight degrades the plastic, and you end up with water and bleach bombs falling all over your stuff.

    Reply
    1. save. spend. splurge.

      Still it’s a cheap way for poorer countries.

      Reply

Leave a Reply