NOTICE DATE: January 5,
2009
NOTICE TYPE:
M-A010509-01 Operations
SHORT DESCRIPTION:
Update to Trading Hub Calculations due to 2009 Congestion Zones
INTENDED AUDIENCE:
Market Participants
DAY AFFECTED: January
1, 2009
LONG DESCRIPTION: ERCOT
has updated the Trading Hub calculations for 2009. Several transmission
buses moved between Congestion Zones in the 2009 Commercially Significant
Constraint definitions, approved by the Board on October 21, 2008. While
the buses that comprise the hubs remain the same, in accordance with Protocol
Section 7.9.2, ERCOT Trading Hubs, the calculation for converting transactions
at Trading Hubs to existing Congestion Zones is revised. Market
Participants should use the following table to convert transactions at Trading
Hubs to existing Congestion Zones:
|
|
2009
Congestion Zone |
|||
|
Trading
Hub |
North |
South |
|
West |
|
North |
.976 |
0.024 |
|
|
|
South |
|
0.97 |
0.03 |
|
|
|
0.050 |
|
0.950 |
|
|
West |
0.235 |
|
|
0.765 |
|
Bus Average |
0.571 |
0.221 |
0.123 |
0.085 |
|
ERCOT Average |
0.315 |
0.249 |
0.245 |
0.191 |
A Protocol
Revision Request will be submitted by ERCOT to update Section 7.9.3.4
accordingly.
ADDITIONAL INFORMATION:
ERCOT posts Trading Hub Prices for each ERCOT Trading Hub for each Settlement
Interval as part of the Balancing Energy Service Report at http://www.ercot.com/mktinfo/services/bal/index.html.
This report will post today for January 1-4, 2009.
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 e-mail at [log in to unmask].
If you are receiving e-mail 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.
sg