After writing about carbon offsets for air travelers in Train, Planes I just found out the Grove Mill Winery of Marlborough, New Zealand second claim to fame besides making premium wines is to have achieved Carbon Neutral status.
Their describe their Best Practices in detail. It includes packaging issues, restoring nearby wetlands and more…
They also help protect the local Southern Bell Frog (pictured here) 
which appealed to the sentimental Froggie that I am.
As for their wines, I have not tried any yet.