Fitting reflection for Earth Hour

CSIRO’s Mayfield West solar field has been tuned-up for tomorrow night’s Earth Hour, which starts at 8.30.

The field’s mirrors, which are normally directed at a 30-metre-tall solar tower, were adjusted at sunrise on Tuesday to reflect the Earth Hour’s 60+ symbol. The solar field, which was opened last year, is at the spearhead of Australia’s clean-energy research program.

The field includes 450 mirrors and a 30-metre-tall solar tower. The field’s mirrors beam sunlight at the tower, where compressed air heats to 1000 degrees and expands through a 200-kilowatt turbine to generate electricity.

A computer program calibrates the mirrors to beam sunlight accurately, which cuts down on the cost of building individually aiming mirrors.

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