This study provides a spread-sheet based model for initial assessment of the costs and performance of CO2 and energy transmission systems. The model covers pipeline transmissions of CO2, natural gas, hydrogen, methanol, and distillate oil, and AC and HVDC transmission of electricity. It can be used to calculate the costs and performance of onshore and offshore pipelines and to asses the sensitivity to a wide range of factors, such as flowrate, pipeline diameter, pressure, terrain, and country. It can also be used to asses different pipeline configurations, such as dedicated single pipelines or pipeline grids including trunk lines.