Re: The Climate, Environment and Energy Thread
Reply #152 –
On the environmental impact of large solar arrays I can take the piss out of some of these concepts, for example the plans from Twiggy and Turnbull. They are going to fill the outback with solar arrays, already some flights coming in off the north coast are diverted due to the risk of glare, the algorithm already exists that predicts where planes have to travel to avoid pilots being dazzled.
We can't get people to wear cloth or paper masks walking around in free open spaces, we have no hope of getting them to wear welding goggles while trapped in a plane! 
Anyway on a more serious note, I like the concept of transparent disposable printed solar cells, these are just becoming available. In effect you build your large solar facility in a location that allows crops to be grown underneath it, a sort of hybrid solar farm / greenhouse, it really makes sense. But I won't claim they are uber green, because the printable solar panels only have a maximum life span of between 1 and 5 years, just like a plastic covered greenhouse. Glass will last longer but isn't an option due to high cost and weight, the benefit of lasting 10 or 15 years just isn't justified, the printed solar cells aren't as efficient but they are about two orders of magnitude cheaper for the same given area even accounting for disposal or recycling costs.
At the moment though, the industry is targeting the lamination of these printed solar films into glass to provide high rise buildings with solar from windows. To me this is not a sensible use of the technology, but it probably delivers the inventors the highest bang for buck in the short term.