Fixed OM Cost

See also: 

Used only when conducting transmission modeling as part of full energy system optimization. Transmission modeling is enabled by editing the Transmission Networks setting in the Settings: Optimization screen.

This variable is specified for each Transmission line ().  Use it to specify the annual fixed operating and maintenance (O&M) cost of transmission lines (or pipelines).  Transmission costs can be specified in three different ways: as total costs, as costs per unit of line length (e.g. $/km), or as costs per unit of line capacity ($/kW). Use the module properties screen to choose how you want to specify transmission costs.

As with other variables used in optimization modeling, this variable is only available for optimized scenarios.  It is not visible in Current Accounts.