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Solar Systems Makes Major Investment in Australia's Solar Future

October 9, 2007   |   6 Comments

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"This is another major step towards affordable mainstream solar power. Instead of making traditional PV modules, the factory will produce modules specifically for Solar Systems' solar concentrator systems. Solar Systems' PV modules produce 1500 times more electricity per square metre than traditional PV modules."

--Dave Holland, Managing Director, Solar Systems
6 Reader Comments
Comment
1 of 6
October 9, 2007
No, it works the opposite way. Mirrors are used to concentrate the sun 1500 times so that the active material is 1500 times less (a few cm2 per m2 of solar area). You would actually also increase the power output per m2 of surface area, as the Spectrolab germanium III-V cells used are 40% efficient as opposed to the 15-20% efficiency of silicon - plus there is heat generated that can be used to heat water, giving a system efficiency of over 90% utilization of the sun's energy.
Comment
2 of 6
October 9, 2007
1500 times the watts/square meter? So that would mean that my 1 KW solar roof could be removed and replaced with a 1.5 MW system? Great! Assuming 100% cell efficiency, where do they get the additional 150 or so suns to collect from? The milky way?
Comment
3 of 6
October 10, 2007
Thank you for inserting into the third paragraph of the newsarticle that it is a PV system you are talking about. I had nearly decided it was all about domestic hot water heating.
I wonder what the maximum operating temperature of the PV cells is? It may be tough to remove all that heat (60% of 1.5MW/sqm is 900kW/sqm, or 90W/sqcm) which is a bunch.
Comment
4 of 6
October 10, 2007
The trick is in the cooling system for the solar modules ... they have had pilots going for a few years ... the technology works ... they are now ramping up production ....

Paradox.
Comment
5 of 6
October 11, 2007
I am an Aussie ... so I think it is great that our country has come up with this achievement, which I understand is the world leader.

I am no expert ... but here is my 10 cents worth ....

Their website (http://www.solarsystems.com.au/) says:
"Solar Systems has developed the capability to concentrate the sun by 500 times onto the solar cells for ultra high power output."

The article above say's:
"Solar Systems' PV modules produce 1500 times more electricity per square metre than traditional PV modules."

I suspect that the formula goes like this:
1500 = (500 x sunlight concentration) x (3 x solar cell and sun tracking efficiency above traditional static PV module)

They have patents on their cooling system. Their solar PV array's use large shared cooling ponds in conjunction with the heat transfer system on the PV modules.

..... Paradox
Comment
6 of 6
October 12, 2007
So their '1500 times' claim is based on a comparison with a 13% efficient cell, with no sunlight concentration? Pretty shaky ground there, don't you think?

I've seen 'traditional' modules advertised with 20% efficiency, and I assume they could stand at least a 2 x sunlight concentration without melting down.

My earlier point was that you will also need a much larger collection area (at least 500x) in order to get 1500 times the output. So my roof will still not hold a 1500 KW system, in spite of their claim.
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