Why is resource Capital Expenditure much lower than expected when service demand is greater than zero in year zero?

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Mr STEM
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Why is resource Capital Expenditure much lower than expected when service demand is greater than zero in year zero?

Post by Mr STEM » Mon May 08, 2017 4:15 pm

Older versions of STEM assume that, by default, you are modelling an existing network and that resources have been rolled out before the model starts, i.e. before year zero. However, if you are modelling a new network which has non-zero demand in year zero, you should either
  1. set the input Max. Age of Installed Units = 0 in the Other Details dialog for any resource whose Physical Lifetime is greater than one, or
  2. simply set the input Pre-Run Installation = No in the global Other Details dialog.
Note: the default for Pre-Run Installation was changed to No in STEM 7.1.

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