Hi everyone! This is my first post on here so let me know if I am not following proper procedures or anything.
I have been looking at ERCOT’s Capacity, Demand and Reserves (CDR) Report (available here) and I’m trying to figure out how they are defining their forecast zones and how it relates to how they list ELCCs by Resource Type.
They define Forecast Zones at the end of the document like this:
The CDR report uses Forecast Zones to identify the geographical location of generation resources. Forecast Zones generally have the same boundaries as the 2003 Congestion Management Zones with the following exceptions: A) Panhandle Zone for resources in the Texas Panhandle counties and outside the 2003 Congestion Management Zones, and B) Coastal Zone for resources in 11 counties along the Texas Gulf Coast and formerly in the South Zone of the 2003 Congestion Management Zones. There are six Forecast Zones: Coastal, Houston, North, Panhandle, South, and West.
Note that the CDR Forecast Zones are only used for resource adequacy reporting and are distinct from other ERCOT geographical reporting schemes used for planning, operational, or data reporting purposes.
but the ELCC resource types are defined for these areas: Coastal 
, Panhandle , West , and Far West 
. Far West is an ERCOT weather zone, however. I’m wondering if they are just mixing and matching their region definitions? If anyone knows of a Forecast Zone to county mapping, perhaps that would clear things up for me. Thanks!