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Date: | Thu, 22 May 2014 20:32:56 +0000 |
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NOTICE DATE: May 22, 2014
NOTICE TYPE: W-A052214-01 Operations
SHORT DESCRIPTION: Corrections to the assignments of Loads to NOIE and Competitive Load Zones in the Network Operations Model
INTENDED AUDIENCE: ERCOT Market Participants
DAY AFFECTED: Various Operating Days since Nodal Go-Live through June 10, 2014
LONG DESCRIPTION: The tables below list corrections to the assignments of Loads to Non-Opt-In Entity (NOIE) and Competitive Load Zones and net MW changes to Load Zone totals based on the current hot weather load distribution factors. These corrections will have an effective date of June 11, 2014 to coincide with an update to the Network Operations Model.
Individual Load to Load Zone Assignment
Station
Load
Original Load Zone
Corrected Load Zone
BRAUNIG
AUX_T12
LZ_SOUTH
LZ_CPS
BRAUNIG
AUX_T34
LZ_SOUTH
LZ_CPS
BULLHO
BW_123
LZ_SOUTH
LZ_AEN
BULLHO
BW_456
LZ_SOUTH
LZ_AEN
CALAVERS
AUX_JKS
LZ_SOUTH
LZ_CPS
CALAVERS
AUX_T12
LZ_SOUTH
LZ_CPS
CALAVERS
AUX_T34
LZ_SOUTH
LZ_CPS
CARSON
CC_789
LZ_SOUTH
LZ_AEN
CATERP
CATERPT2
LZ_SOUTH
LZ_LCRA
COPEN_RC
COPEN_RC
LZ_NORTH
LZ_RAYBN
DECKER
ST-1
LZ_SOUTH
LZ_AEN
DECKER
ST-2
LZ_SOUTH
LZ_AEN
FLATON
FLATONT4
LZ_LCRA
LZ_SOUTH
FRNYW_RC
FRNYW_RC
LZ_NORTH
LZ_RAYBN
I20_RC
I20RC1
LZ_NORTH
LZ_RAYBN
I20_RC
I20RC2
LZ_NORTH
LZ_RAYBN
LOSTCR
LOSTCRT3
LZ_SOUTH
LZ_LCRA
LOSTCR
LOSTCRT4
LZ_SOUTH
LZ_LCRA
MEDILA
T2
LZ_SOUTH
LZ_LCRA
MNTLB_RC
MNTLB_RC1
LZ_NORTH
LZ_RAYBN
MNTLB_RC
MNTLB_RC2
LZ_NORTH
LZ_RAYBN
NORDHE
69_12_1
LZ_LCRA
LZ_SOUTH
Q1
LXFMR4
LZ_SOUTH
LZ_CPS
SHMW_RC
SHMW1
LZ_NORTH
LZ_RAYBN
SUTHRLND
LD1
LZ_SOUTH
LZ_CPS
TAWK_RC
TAWK_RC_1
LZ_NORTH
LZ_RAYBN
TAWK_RC
TAWK_RC_2
LZ_NORTH
LZ_RAYBN
TRADPOST
TP_789
LZ_SOUTH
LZ_AEN
WOLFLA
WOLFLAT4
LZ_SOUTH
LZ_LCRA
YORKTO
MOBILE11
LZ_LCRA
LZ_SOUTH
Net Impact by Load Zone
Based on Current Hot Weather Load Distribution Factors
Load Zone
Original MWs of Load
MWs of Load Moving
Updated MWs of Load
% Change in MWs of Load
LZ_AEN
2262.5
1.6
2264.1
0.1%
LZ_CPS
3948.8
65.6
4014.4
1.7%
LZ_HOUSTON
12730.1
0.0
12730.1
0.0%
LZ_LCRA
1993.8
13.0
2006.8
0.7%
LZ_NORTH
22256.2
-27.6
22228.6
-0.1%
LZ_RAYBN
466.5
27.6
494.1
5.9%
LZ_SOUTH
6669.9
-80.2
6589.7
-1.2%
LZ_WEST
3792.0
0.0
3792.0
0.0%
Some Loads have had incorrect Load Zone assignments since Nodal Go-Live (12/01/10) that resulted from the initial modeling during the transition from Zonal Congestion Management Zones to Nodal Competitive Load Zones. Other Loads were subsequently introduced with incorrect Load Zone assignments. The total of the Load quantities that were assigned incorrectly to a Load Zone is 109.5 MW for the analysis shown in the table above but will vary by the hour and season.
The incorrect Load to Load Zone assignments impacted the results of the price calculations for the Day-Ahead Market (DAM) and Real-Time Market (RTM) and flow calculations for the Congestion Revenue Right (CRR) Auctions and the DAM for some intervals since Nodal Go-Live. However, ERCOT will not perform any price corrections because the error does not meet the criteria described in Protocol Sections 4.5.3(4) and 6.3(4). Lastly, the incorrect assignments of Loads to NOIE and Competitive Load Zones did not have an impact on the MWh quantities allocated to NOIE Load Zones for energy Settlements.
ERCOT will ask that this matter be placed on the May 29, 2014 Technical Advisory Committee (TAC) agenda to discuss in further detail and answer any questions.
CONTACT: If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at [log in to unmask]<mailto:[log in to unmask]>.
If you are receiving email from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.
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