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The generation additions {gen_add} worksheet is a detailed list of the generating units in a BAA that
represent anticipated increases or decreases in generating capacity during future years. This includes
retirements and up-rates or derates to existing plants and new generation construction. Update the
provided list and add rows as necessary to provide information for new additions and other changes.
Planned retirements should be reported as negative values in the summer and winter capacity column
(equal to the capacity reported on the {gen_exist} sheet), with the anticipated retirement date reported
in the Retirement Date column. Planned up-rates and derates should be reported as the incremental
change (a positive or negative value) that, when added to the existing capacity reported on {gen_exist},
nets to the future planned capacity. The anticipated rerate date should be reported in the Commission
Date column.
Units that were reported on {gen_add} last year but are not being reported this year should remain on
the {gen_add} sheet (for one year only) with a hyphen entered for the NERC Class Code, and a WECC
Class Code of 5. This process allows WECC staff to track the progress of planned units.
Comments should be included in the (Published and/or Non-published) comment fields as appropriate.
For example: for each inoperable unit state that the unit is in deactivated shutdown, on cold standby,
etc. For units that were retired or derated during the actual year, or are planned to be retired or
derated, indicate the reason for the retirement or derate (e.g., due to EPA regulations) in the comments
field. Also, use the comment field to report capacity commitment entities and their commitment shares
of remote resources. Remote resources are defined as resources that are physically located in one BAA
but have capacity commitments to an entity, or entities, located in another BA’s geographic footprint.
In the comment field, enter the name of the capacity commitment entities and their commitment
shares of each remote resource located in the BAA that is reported on the {gen_exist} or {gen_add}
sheets.
The combustion turbine portions and steam portions of combined cycle units should be reported
separately. The rating of each should be equal to the rating that applies when the units are operated in
a combined cycle configuration. Therefore, the sum of the ratings of each component should equal the
rated output of the combined cycle unit. (An existing steam or combustion turbine unit that is planned
to be converted to a combined cycle unit should not be reported as a combined cycle unit.)
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