Assessing South Australian carbon offset supply and cost
Date
2019
Authors
Regan, C.M.
Connor, J.D.
Settre, C.
Summers, D.M.
Cavagnaro, T.
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This report presents research that fills knowledge gaps related to how much carbon sequestration supply to offset carbon emissions might be available, at what carbon price and from what land use and management change, in South Australia (SA). It provides estimates of carbon offset supply amounts that could be economically viable at various price points for a set of agreed Emissions Reduction Fund (ERF) and prospective non-ERF methods. The geographic focus of this work is areas of South Australia predominantly used for intensive agriculture. Estimates of annual and cumulative carbon supply over a 100 year horizon for 2020 plantings were produced for relevant areas. We considered the economic method consistent with previous related economics literature, which assumes carbon credits for 100 years and a requirement to keep land covered in trees for 100years. We also calculated how conservative ERF rules, that credit only the first 25 years of carbon sequestration,but require permanent land use change for 100 years, change the economics of carbon supply. All costs relevant to an economically oriented landholder were accounted for. This includes cost of establishing and maintaining carbon plantings, and the opportunity cost foregone from the previous land use.
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Copyright 2019 Crown in right of the State of South Australia, Department for Environment and Water