The Canadian Solar CS6W range covers 550W, 575W and 580W in a single series, which is the sweet spot for most commercial rooftops and larger residential installations. All three share identical dimensions, weight and mounting specification, so an array can be sized to the roof and the budget without changing rails, clamps or string design between models. At 2278 × 1134 × 30mm and 27.6kg, the panel is narrower and lighter than the higher-wattage modules it competes with, which makes a real difference on a roof with awkward access.
Efficiency runs from 21.7% on the 550T up to 22.5% on the 580T, and the temperature coefficient of -0.29% per °C is where this range earns its place. That figure governs how much output survives a hot afternoon, and on a South African roof in February it matters more than the number printed on the box. The glass carries an anti-reflective coating, the junction box is IP68, and the certification list runs well beyond the usual IEC pair to include salt mist, ammonia and sand and dust resistance.
