Sarnia Photovoltaic Power Plant near Sarnia, Ontario, is as of September 2010 the world's largest photovoltaic plant with an installed capacity of 80 MW. The plant covers 950 acres (380 ha) and contains about 966,000 square metres (96.6 ha), which is about 1.3 million thin film panels.
http://ontario-wind-resistance.org/2012/03/23/living-beside-a-massive-solar-plant-in-ontario/
