Investors who made one of the biggest timberland purchases in years with plans to make carbon deals said they sold more than $100 million of so-called forest offsets during the gambit’s first year.

Aurora Sustainable Lands, created to carry out the biggest wager yet on forest-carbon markets, said it expects its 1.7 million acres of eastern U.S. forest to annually yield additional offsets worth between $60 million and $150 million at current prices. Aurora paid about $1.8 billion for the properties last year.