Solar Energy – The Oldest Power On Earth

Years of Power In Just One Day

There is more solar energy striking the earth’s surface in one and a half hours (480 EJ) than worldwide energy consumption in the year from all sources combined (430 EJ).solar-power-cut

“The question I ask myself is: what do I want to achieve? and what are all my options to get the task done? For example: when I buy a drill I am really wanting something to make a hole. Essentially, we need to
Keep the endpoint in focus and the options wide
Green Technology Engineer – Paul Kelly, Research Support at Permaculture Visions.

Wide Spectrum of Solar Opportunities


Solar power is abundant, free and the oldest power source known to humanity. The Sun beams a broad variety of energy waves to us.  For thousands of years humanity has used the heat, light and UV for our daily tasks.  We are enjoying an explosion of research and development as we near peak pollution and warming targets.  Along with the rise in Solar technology a number of female engineers are leading research and many mature women are able to contribute to installation and maintenance.

Boston Herald 1948 re: Dover Sun House invented by female engineer Maria Telkes.

Developing Technologies Include:

Different Solar hot water systems – bathroom water and room heating

What is the Environmental Cost of Solar Panels?

To calculate the full cost of any gadget we can do a whole of life analysis. This works out the energy cost from the time we dig the materials up to the time we dispose or recycle the materials. Research shows that a solar panels generate more energy that it took to create and many panels are lasting much longer than originally expected.

With recent developments including organic solar cells, the environmental cost is coming down. Durability and effeciency is constantly rising.

Can I Use Solar Energy Without Buying More Stuff?

Some great passive solar options include:

sustainability workshop
  • attach a conservatory or Greenhouse (made with recycled windows) to the sun-side of your home to create warm air. the trick is to keep it small to reduce the cooling air movement.
  • place mirrors in the garden to reflect light into the home. You can make sculptures out of recycled stainless steel instead of glass.
  • create a solar oven made out of reclaimed picture frames and a thickwalled box.
  • make your own light-shelves, install a waterbottle light in a dark shed
  • experiment with drying food
  • incorporate simple heat banks [like Trombe walls] into your home and office
  • hang herbs to dry in your kitchen or a simple solar dryer
  • hang your clothes to dry
  • if you live in a cold climate – build a cozy outdoor nook in the sunny corner of a tiny greenhouse. Incorporate lots of thermal mass (ie. mud-brick benches and pillars) and you can sunbathe in it on sunny days in winter.  Install a shower with a rocketstove water heater in another corner and you could spend most of your winters daytime happily in there as do many on Carraig Dulra permaculture farm in Ireland!

Here is a great list of DIY projects – Enjoy!

Learn how to integrate Solar into a Permaculture Lifestyle in a Permaculture Design Course with us Online.

Or immerse yourself in a full time two-week Permaculture design class this June at Permaculture Sydney with world-class teachers.