Organic recycling firm TEG Group announced it has processed more than one million tonnes of waste since starting in 2006.
The Lancashire composting and anaerobic digestion (AD) developer and operator runs nine composting facilities.
It said the total amount of waste it had diverted from landfill so far would be “sufficient to fill the whole of Wembley Stadium” and saved landfill gas emissions the equivalent of more than 200,000 tonnes of carbon dioxide.
In March TEG Group reported reduced losses for 2012. In its full year financial results the company said pre-tax losses had been cut to £1.13m from £1.74m in 2011.
The company gave an upbeat assessment of future trading. It said landfill tax was expected to rise again in April 2014, which would lead to an increase in composting and AD.
Chief executive Mick Fishwick said recycling one million tonnes was a “milestone” for the company. He added: “It is a tremendous achievement to have been accomplished and is testimony to all the hard work and loyalty shown from the staff at TEG.
“The operational side to our business continues to progress strongly and I look forward to the group reaching other and even greater milestones in the future”.