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The ski area took top honours in the ''large business leadership'' category for its work to reduce waste, carbon emissions, energy use and fuel consumption.
The Green Ribbon Awards were established in 1989 and acknowledge businesses and individuals that make outstanding contributions to protecting New Zealand's environment for future generations.
Ski area manager Ross Copland received the award on behalf of the company and said he was ''ecstatic'' with the win.
Coronet Peak staff had worked hard to deliver a sustainable business strategy and were continually educated on environmental issues.
A ''mountain-wide clean-up'' was held every summer to keep the ski area clean, he said.
''We've put multiple initiatives in place which have reduced our electricity usage by 10% and fuel consumption by 60,000 litres.
''We see Coronet Peak as an advocate for sustainable business practices in New Zealand, so we're working hard to ensure we 'walk the talk'.''