4.2 Economic assumptions

We estimate transport and injection costs in real US$2010 terms. Our calculations of the cost per tonne avoided incorporate a real discount rate of 7%.

The calculations also assume a construction period of 3 years and an injection period of either 20 years for the representative analyses and varying periods for the individual case studies. We assume that the project is decommissioned after the injection period.

Where possible, we have employed recommended IEA assumptions. Our methodology for calculating the costs of transport and storage per tonne of CO2-e avoided is given in Allinson et al. [37].