WECC Data Collection Manual
Attachment B
Attachment B:
Existing and Planned Generation Reporting
Instructions
WECC Data Collection Manual
Attachment B
Reporting Instructions for Existing Generation and Generation
Additions Data
Data Reporting Process
Existing generation and generation additions worksheets are described in Attachment A
of this Manual. The data are updated by changing the information presented in the
worksheets for the BA. The changes should make the information current as of
December 31 of the actual year and, for BAs in the U.S., should be consistent with the
data reported to the DOE in Form EIA-860.
The existing generation {gen_exist} worksheet is a detailed list of all generating units in
the BA area with in-service dates up to the end of the actual year. Check the data
provided for accuracy and update as necessary, including updating actual retirement
dates. If there are units missing from the list, or new units need to be added, insert a
new row and provide the information requested. For units that were retired during the
actual year, report zero (0) capacity in the summer and winter capacity columns, update
the Retirement Date to reflect the actual retirement date, and update the Status Code to
RE. If a unit was rerated during the actual year, report the new total capacity in the
summer and winter columns. Units with a NERC class code of Existing-Inoperable (EI)
are to be reported with a summer and winter capacity of zero (0).
Units with a Status Code of OS are reported with a summer and winter capacity of zero
(0). A cold standby unit should be reported as SB, with a summer and winter capacity
that reflects the expected available capacity of the unit.
Data for each unit that came into service during the actual year are to be added, with a
Status Code of OP and a Commission date, to the {gen_exist} sheet and removed from
the {gen_add} sheet. Likewise, data for each unit that was retired during the actual year
are to be updated on the {gen_exist} sheet, with a Status Code of RE and a Retirement
date, and removed from the {gen_add} sheet.
The generation additions {gen_add} worksheet is a detailed list of the generating units
in a BA’s area 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 the NERC Class Code
blank, and a WECC Class Code of 5. This process allows WECC staff to track the
progress of planned units.
WECC Data Collection Manual
Attachment B
Comments should be included in the 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.
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.)
Since the master database will be manually updated based on submitted worksheet
revisions, highlight, in green, all worksheet cells (not rows) where changes are made.
Updated worksheets should be submitted via email to dick@wecc.biz on or before the
Data Submission Due Date.
WECC Data Collection Manual
Attachment B
Existing Generation and Generation Additions Data:
Facility Record Format
Field Name
Explanation
EIA Plant
Code
EIA Plant Code
EIA Unit Code
EIA Unit Code
Zone
For BAs with resources in multiple modeling areas, enter the zone where the
resource is located. The affected BAs and the zone names are identified below.
For all other BAs, enter the same code as entered in the BA column.
Modeling Area/Zone Table
BA →
AZPS
WALC
WACM
PACE
CISO
IPCO
Modeling Area ↓
Zones
Zones
Zones
Zones
Zones
Zones
IID
AZID
Arizona
AZAZ
WAAZ
New Mexico
AZNM
WANM
Colorado
WACO
Wyoming
WAWY
PAWY
Idaho
PAID
Utah
PAUT
PG&E_Bay
CIPB
PG&E_Vly
CIPV
SCE
CISC
SDGE
CISD
Treas Vly
IPTV
Magic Vly
IPMV
Far East
IPFE
Field Name
Explanation
BA
Balancing Authority code (see Appendix B).
Org
Name/acronym of Load Serving Entity where the unit is located (see Appendix
C for list of LSE names).
Unit Name
Power Plant Unit Name (Unit Name plus Unit Number should create a unique
identifier for the unit.)
WECC Data Collection Manual
Attachment B
Field Name
Explanation
Unit Number
Unit Number (Do not leave blank)
Unit Type
The following options are included in the workbook:
ST ....... Steam Turbine, including nuclear, geothermal and solar steam (does
not include combined cycle)
GT ....... Combustion (Gas) Turbine - Simple Cycle (includes jet engine design)
IC ........ Internal Combustion Engine (diesel, piston, reciprocating)
CA ....... Combined Cycle Steam Part
CT ....... Combined Cycle Combustion Turbine Part (type of coal or solid must
be reported as energy source for integrated coal gasification)
CS ....... Combined Cycle Single Shaft (combustion turbine and steam turbine
share a single generator)
CC ....... Combined Cycle Total Unit (use only for future generation)
CD ....... Combined Cycle Duct Firing
HY ....... Hydraulic Turbine (includes turbines associated with delivery of water
by pipeline)
HY-R ... Hydraulic Turbine that qualified as a renewable resource under
applicable state or province definition
PS ....... Hydraulic Turbine – Reversible (pumped storage)
BT ....... Turbines Used in a Binary Cycle (such as used for geothermal
applications)
PV-T .... Solar Photovoltaic with Tracking
PV-NT . Solar Photovoltaic without Tracking
SP-S.... Solar Thermal with Storage
SP-NS . Solar Thermal without Storage
WT ...... Wind Turbine, Onshore
CE ....... Compressed Air Energy Storage
FC ....... Fuel Cell
OT ....... Other
OS ....... Other Storage
NA ....... Undetermined/Unknown
Note: The following resources should be reported as Other (OT) with the
associated abbreviation listed in the comments field.
- Energy Storage, Battery (BA),
- Energy Storage, Concentrated Solar Power (CP),
- Energy Storage, Flywheel (FW),
- Hydrokinetic, Axel Flow Turbine (HA),
- Hydrokinetic, Wave Body (HB),
- Hydrokinetic, Other (HK),
- Wind Turbine, Offshore (WS)
Nameplate
The initial capacity of a piece of electrical equipment as stated on the attached
nameplate. Actual capability can vary from the nameplate rating due to age,
wear, maintenance, or ambient conditions. Data to be entered in MW, rounded
to the tenth of a MW.
WECC Data Collection Manual
Attachment B
Field Name
Explanation
Summer Cap
The expected capability available to the grid, of a generating unit during the
peak of the summer season. Do not include station service capacity and do not
reduce to reflect planned outages (e.g., scheduled maintenance). Data to be
entered in MW, rounded to the tenth of a MW.
Winter Cap
The expected capability available to the grid, of a generating unit during the
peak of the winter season. Do not include station service capacity and do not
reduce to reflect planned outages (e.g., scheduled maintenance). Data to be
entered in MW, rounded to the tenth of a MW.
Cogen
Equipment used to produce electric energy and forms of useful thermal energy,
such as heat or steam, used for industrial, commercial, heating, or cooling
purposes, through sequential use of energy. Enter “True” if unit is a
cogeneration unit.
Cogen
Summer Cap
This is the must run (capacity needed for on-site process) net capacity of the
cogeneration unit available to the system during the summer season. Do not
include generator output committed to serve self-generation requirements. Data
to be entered in MW.
Cogen Winter
Cap
This is the must run (capacity needed for on-site process) net capacity of the
cogeneration unit available to the system during the winter season. Do not
include generator output committed to serve self-generation requirements. Data
to be entered in MW.
For conventional technology generation, refer to WECC Criteria for Uniform Reporting
of Generator Ratings (Appendix D) for rating instructions.
Field Name
Explanation
The following options are included in the workbook:
Primary Fuel
BIT .......Anthracite Coal and Bituminous Coal
SUB .....Subbituminous Coal
LIG .......Lignite Coal
WC ......Waste/Other Coal. Including anthracite culm, bituminous gob, fine
coal, lignite waste, waste coal
SC .......Coal Synfuel. Coal-based solid fuel that has been processed by a coal
synfuel plant; and coal-based fuels such as briquettes, pellets, or
extrusions, which are formed from fresh or recycled coal and binding
materials
PC .......Petroleum Coke
DFO .....Distillate Fuel Oil. Including Diesel, No. 1, No. 2, and No. 4 Fuel Oils
SG .......Synthetic Gas, other than coal-derived
SGC .....Synthetic Gas, derived from coal
JF ........Jet Fuel
KER .....Kerosene
RFO .....Residual Fuel Oil. Including No. 5, No. 6 Fuel Oils, and Bunker C Fuel
Oil
WO ......Waste/Other Oil. Including Crude Oil, Liquid Butane, Liquid Propane,
Oil Waste, Re-Refined Motor Oil, Sludge Oil, Tar Oil, or other
WECC Data Collection Manual
Field Name
Explanation
Primary Fuel
The following options are included in the workbook:
Attachment B
petroleum-based liquid waste
NG .......Natural Gas
PG .......Gaseous Propane
BFG .....Blast Furnace Gas
OG .......Other Gas (coke oven, refinery etc.)
NUC .....Nuclear including Uranium, Plutonium, Thorium
GEO.....Geothermal Steam
WAT.....Water at a conventional hydroelectric turbine- base ratings on median
hydro conditions
AB ........Agriculture Crop Byproducts/Straw/Energy Crops
BLQ .....Black Liquor
LFG......Landfill Gas
MSW ....Municipal Solid Waste
OBL .....Other Biomass Liquids
OBS .....Other Biomass Solids
OBG.....Other Biomass Gas (includes digester gas, methane, and other
biomass gases)
PUR .....Purchased Steam
SLW .....Sludge Waste
TDF......Tire-derived Fuels
WDL.....Wood Waste Liquids excluding Black Liquor (includes red liquor,
sludge wood, spent sulfite liquor, and other wood-based liquids)
WDS ....Wood/Wood Waste Solids. Including paper pellets, railroad ties, utility
poles, wood chips, bark, and wood waste solids
SUN .....Solar
WND ....Wind
OTH .....Other (Describe in Comments)
WH ......Waste heat not directly attributed to an energy source. WH should only
be reported where the energy source for the waste heat is
undetermined
Secondary
Fuel
Use one of the options listed above under primary fuel. Fuel used for start-up
should not be reported as an alternate fuel.
If a unit can burn two or more fuel types, report the type most likely to be burned as the
primary fuel. Report the next fuel type most likely to be burned, based on expected
annual energy predominance, as the secondary fuel.
Field Name
Explanation
Status Code
The following options are available for reporting the Status Code:
Existing Generation Only
OP .......Operating or short-term outage
SB ........Cold standby, 3-6 mo. to reactivate
OS .......Out of service
RE .......Retired (report a summer and winter capacity of zero (0) and indicate
WECC Data Collection Manual
Field Name
Attachment B
Explanation
reason for retirement in the comments field)
Status Code
Generation Additions/Repowers Only
P ..........Planned for installation but not under active construction
L ..........Regulatory approval pending but not under active construction (started
site preparation)
T ..........Regulatory approval received but not under active construction
U ..........Under active construction, less than or equal to 50% complete (based
on construction time to first electric date)
V ..........Under active construction, more than 50% complete (based on
construction time to first electric date)
TS ........Construction complete, but not yet in commercial operation (including
low power testing of nuclear units)
A ..........Generator capability increased (rerated or relicensed)
D ..........Generator capability decreased (rerated or relicensed) (indicate
reason in comments field)
M .........Generator to be put in deactivated shutdown status
RA .......Previously retired or deactivated generator planned for reactivation
RT ........Existing generator scheduled for retirement (indicate reason in
comments field)
FC ........Existing generator planned for conversion to another fuel or energy
source
IP .........Indefinitely postponed (WECC Class Code 5)
CO .......Change of ownership (including change of shares of jointly-owned
units)
State
State Code (see Appendix B).
County
County where generation is located.
NERC
Class Code
When determining categorization of supply resources, refer to the criteria
listed within each supply category. Determine a supply resource's
applicability to a category by assessing the criteria in each supply
category in order of certainty (use logical progression). For example, first
assess whether the resource falls into the Existing-Certain category. If the
resource does not meet that criteria, assess the criteria of Existing-Other.
If not, assess the criteria of Existing-Inoperable. If not, assess the criteria
of Future-Planned. If not assess the criteria of Future-Other. If not, assess
the criteria of Conceptual. Furthermore, a resource will qualify within a
supply category if any one of the listed criteria is true for that resource.
[Note: information in brackets and bold were added by WECC Staff.]
EXISTING RESOURCES
Enter the class code that best reflects the current status of existing
generation.
EC – Existing-Certain – This category contains generation resources
available to operate and deliver power within or into the region during peak
demand in the assessment. Resources included in this category may be
reported as a portion of the full capability of the resource, plant, or unit. This
WECC Data Collection Manual
Field Name
Attachment B
Explanation
category includes, but is not limited to the following:
 Contracted (or firm) or other similar resource confirmed to serve
load during peak demand in the assessment.
 Where organized markets exist, designated market resource that is
eligible to bid into a market or has been designated as a firm
network resource.
 Network Resource, as the term is used for FERC pro forma or other
regulatory approved tariffs.
 Energy-only resources confirmed able to serve load during peak
demand and will not be curtailed [recalled]. ["Energy-only"
applies only to generators that have chosen ER
Interconnection Service under FERC Order No. 2003. Do not
include unless this service specifically applies.]
 Capacity resources that cannot be sold elsewhere.
 Other resources not included in the above categories that have
been confirmed able to serve load and not to be curtailed [recalled]
during peak demand.
NERC
Class Code
EO – Existing-Other – [WECC staff does not believe that the ExistingOther class code applies to resources in the Western Interconnection.
Contact WECC staff before classifying a resource as Existing-Other] This
category contains generation resources that may be available to operate and
deliver power within or into the region during peak demand in the assessment,
but may be curtailed or interrupted at any time for various reasons. This
category also includes portions of intermittent generation not included in
Existing-Certain. This category includes, but is not limited to the following:
 A resource with non-firm or other similar transmission arrangements.
 Energy-only resources confirmed able to serve load during peak
demand and may be curtailed [recalled] for any reason. ["Energyonly" applies only to generators that have chosen ER
Interconnection Service under FERC Order No. 2003. Do not
include unless this service specifically applies.]
 Mothballed generation (that may be returned to service for the
period of the assessment).
 Portion of generation resources constrained for other reasons.
EI – Existing-Inoperable – This category contains generation resources that
are out-of-service and cannot be brought back into service to serve load during
peak demand. However, this category can include inoperable resources that
could return to service at some point in the future. This value may vary for
future seasons and can be reported as zero (0). This includes ALL existing
generation within a Region or subregion not included in Existing-Certain or
Existing-Other, but is not limited to, the following:
 Mothballed generation (that cannot be returned to service for the
period of the assessment).
 Other existing but out-of-service generation (that cannot be returned
to service for the period of the assessment).
 This category does not include behind-the-meter generation or nonconnected emergency generators.
WECC Data Collection Manual
Field Name
Attachment B
Explanation
FUTURE RESOURCES
Enter the class code that best reflects the current status of generation
additions.
This category includes generation resources the reporting entity has a
reasonable expectation of coming on-line during the period of the assessment.
As such, to qualify in either of the Future categories, the resource must have
achieved one or more of these milestones:
 Construction has started.
 Application has been submitted to begin a regulatory process (e.g.
Site Permit, Construction Permit, Environmental Permit).
 Regulatory approval has been received to be in the rate base.
 Approved power purchase agreement.
 Approved and/or designated as a resource by a market operator.
One of these criteria must be met before categorizing a supply resource as
Future-Planned or Future-Other.
NERC
Class Code
FP – Future-Planned – Generation resources anticipated to be available to
operate and deliver power within or into the region during peak demand in the
assessment. This category includes, but is not limited to, the following:
 Contracted (or firm) or other similar resource.
 Where organized markets exist, designated market resource that is
eligible to bid into a market or has been designated as a firm
network resource.
 Network Resource, as that term is used for FERC pro forma or other
regulatory approved tariffs.
 Energy-only resources confirmed able to serve load during the
period of analysis in the assessment and will not be curtailed
[recalled].
 Where applicable, included in an integrated resource plan under a
regulatory environment that mandates resource adequacy
requirements and the obligation to serve.
FO – Future-Other – [WECC staff does not believe that the Future-Other
class code applies to resources in the Western Interconnect. Contact
WECC staff before classifying a resource as Future-Other] This category
includes generation resources that do not qualify as Future-Planned and are not
included in the Conceptual category. This category includes, but is not limited
to, generation resources during the peak that may:
 Be curtailed [recalled] or interrupted at any time for any reason.
 Energy-only resources that may be able to serve load during the
period of analysis in the assessment.
C – Conceptual – This category includes generation resources that are not in a
prior listed category, but have been identified and/or announced on a resource
planning basis through one or more of the following sources:
 Corporate announcement.
 Entered into or is in the early stages of an approval process.
 Is in a generator interconnection (or other) queue for study.
 “Place-holder” generation for use in modeling.
WECC Data Collection Manual
Field Name
Attachment B
Explanation
0 – Existing Generation – All generation existing as of December 31 of the
actual year should be identified in Class 0.
Enter the class code that best reflects the current status of generation
additions or retirements.
1 – Class 1 – Generation additions that were reported to be under active
construction as of December 31 of the actual year and are projected to be inservice within the period ending five years from the end of the actual year. Also
include any facility or unit that has a firm date for retirement within the
assessment period as a result of regulatory requirements or corporate
decisions.
WECC
Class Code
2 – Class 2 – Generation additions that were reported to have 1) received
regulatory approval, or are undergoing regulatory review, 2) with a signed
interconnection agreement, and 3) with an expected on-line date within the
period ending seven years from the end of the actual year. This class includes
resources that were expected to be in service as early as Class 1 resources but
do not meet the test of being under construction. Also include any facility or unit
that is estimated by the reporting entity to be retired within the assessment
period.
3 – Class 3 – Generation additions/retirements that were reported which have
met the NERC criteria for Future-Planned or Future-Other Resources but,
because of expected on-line requirements, do not qualify as Class 1 or 2
Resources.
4 – Class 4 – Generation additions/retirements that were reported which have
met the NERC criteria for Conceptual Resources.
5 – Class 5 – Generation additions that were reported last year but are no
longer expected to enter service, retire, etc., within the assessment period.
Correlation of NERC Class Codes and WECC Class Codes
NERC Class
Codes
EC
EO*
FP
FO*
C
EI
-
WECC Class
Codes
0
1
2
3
2
3
4
4
4
5
WECC Data Collection Manual
Attachment B
* WECC staff does not believe that the Existing-Other or Future-Other class codes apply
to resources in the Western Interconnection. Contact WECC staff before classifying a
resource as Existing-Other or Future-Other.
Field Name
Field Content
Explanation
Existing
generation only
Month and Year the unit entered service.
Planned
generation only
Month and Year unit is expected to be in service.
Conceptual
generation only
Month and Year unit is conceptually expected to be in
service.
Retirement
Date
Existing
generation only
Month and Year the unit was, or is expected to be retired.
Latitude
Generation
Latitude
Latitude location of generating unit. Use XX.XXXX/ –
XX.XXXX convention. This should be the actual location of
the unit, not the center of the County as is allowed when
supplying this data to EPA for the eGRID report.
Longitude
Generation
Longitude
TSS Bus
Bus Number
Wind/Solar
Zone
Wind/Solar Zone
TEPPC
Profile
Wind/Solar
Profile Location
Comments
Comments
Commission
Date
1
Longitude location of generating unit. Use XXX.XXXX/ –
XXX.XXXX convention. This should be the actual location of
the unit, not the center of the County as is allowed when
supplying this data to EPA for the eGRID report.
Bus number associated with generation location. The Bus
number should be the same number submitted for TSS base
cases.
For Wind or Solar Generation, indicate the zone where the
generation is located or, for new construction, will be
located. See the Modeling Area/Zone Table, page 15, for
zone names.
For Wind or Solar Generation, indicate the TEPPC Profile
where the generation is located or, for new construction, will
be located. If the wind facility is not located in or near a
TEPPC Profile, do not enter a code in this cell. See TEPPC
Renewable Energy Cases1 for Profile names.
Comments are used for purposes such as providing
explanations for OT unit type codes and fuel type codes,
giving unit ownership information, explaining plant operating
status, and documenting status of new generation, etc. Also
use the comment field to report the reason for derating or
retirement of generating units.
Document is available on the WECC website at:
http://www.wecc.biz/committees/StandingCommittees/PCC/LRS/Shared%20Documents/Wind%20Profiles
/Renewable%20Energy%20Generation%20Paper.pdf