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Table B.2. Major Disturbances and Unusual Occurrences, Year-to-Date
through December 2007 |
| Date |
Utility/Power Pool (NERC Region) |
Time |
Area Affected |
Type of Disturbance |
Loss (megawatts) |
Number of Customers Affected [1] |
Restoration
Date/Time |
| January |
| 1/5/2007 |
Puerto Rico Electric Power Authority (PR) |
10:44 a.m. |
Island of Puerto Rico |
Voltage Reduction |
0 |
0 |
11:13 a.m. January 05 |
| 1/13/2007 |
Ameren Corporation (MRO) |
5:00 a.m. |
Missouri and Illinois |
Ice Storm |
N/A |
225,000 |
12:00 p.m. January 19 |
| 1/13/2007 |
DTE Energy (Detroit Edison) (RFC) |
7:30 a.m. |
Eastern and Lower Michigan |
Ice Storm |
500 |
129,607 |
4:00 p.m. January 19 |
| 1/16/2007 |
Snohomish County PUD No. 1 (WECC) |
2:00 a.m. |
Snohomish County, Washington |
Major Windstorm |
260 |
110,433 |
12:00 a.m. January 17 |
| February |
| 2/13/2007 |
Duke Energy Midwest (RFC) |
2:00 p.m. |
Indiana and Southwest Ohio |
Ice/Wind Storm |
250 |
367,500 |
12:00 a.m. February 16 |
| 2/13/2007 |
Baltimore Gas and Electric Company (RFC) |
5:00 p.m. |
Central Maryland |
Winter Storm |
400 |
155,183 |
5:30 a.m. February 17 |
| 2/24/2007 |
MidAmerican Energy Company (MRO) |
4:00 p.m. |
NE quarter of State of Iowa and Rock Island, Illinois |
Ice Storm |
210 |
75,000 |
12:57 a.m. March 04 |
| 2/24/2007 |
Alliant Energy (MRO) |
6:00 p.m. |
Central Iowa and Cedar Rapids areas |
Ice Storm |
400 |
140,000 |
11:47 p.m. February 24 |
| 2/24/2007 |
Midwest ISO (RFC) |
7:23 p.m. |
Cedar Rapids, Iowa |
Ice Storm |
750 |
215,000 |
12:47 a.m. February 25 |
| 2/28/2007 |
Pacific Gas and Electric Company (WECC) |
12:45 a.m. |
Northern California |
Winter Storm |
110 |
671,189 |
8:45 p.m. March 02 |
| March |
| 3/1/2007 |
Southern Company (SERC) |
9:40 p.m. |
Parts of Alabama, Mississippi, Georgia, Florida |
Major Storm |
95 |
25,445 |
11:30 p.m. March 02 |
| 3/31/2007 |
CenterPoint Energy (ERCOT) |
7:30 a.m. |
Houston, Texas |
Severe Thunderstorms |
179 |
67,000 |
7:00 p.m. March 31 |
| April |
| 4/5/2007 |
Central Maine Power Company (NPCC) |
9:20 p.m. |
Southern and Coastal Maine |
Heavy Snow Storm |
- |
117,142 |
1:10 p.m. April 06 |
| 4/12/2007 |
Los Angeles Department of Water and Power (WECC) |
12:32 a.m. |
City of Los Angeles, California |
High Winds |
200 |
158,977 |
9:02 p.m. April 12 |
| 4/12/2007 |
Crockett Cogeneration (WECC) |
9:09 a.m. |
San Francisco Bay Area, California |
Trip of a Unit |
130 |
- |
11:23 a.m. April 12 |
| 4/14/2007 |
National Grid - New England (NPCC) |
9:00 a.m. |
Massachusetts, New Hampshire, Rhode Island |
High Winds |
65-80 |
70,000 |
11:00 a.m. April 14 |
| 4/16/2007 |
Public Service New Hampshire Electric System Control Center (NPCC) |
8:00 a.m. |
New Hampshire |
Severe Thunderstorms |
- |
102,568 |
7:00 p.m. April 16 |
| 4/16/2007 |
Central Maine Power Company (NPCC) |
10:14 a.m. |
Southern and Coastal Maine |
Heavy Snow Storm |
- |
127,545 |
10:18 p.m. April 18 |
| 4/16/2007 |
Progress Energy - Carolinas, Inc. (SERC) |
11:00 a.m. |
North and South Carolina |
HIgh Winds |
- |
33,000 |
7:00 p.m. April 16 |
| 4/16/2007 |
Baltimore Gas and Electric Company (RFC) |
2:00 p.m. |
Central Maryland - Baltimore City and surrounding Counties |
Severe Thunderstorms |
160 |
138,000 |
5:00 p.m. April 18 |
| 4/16/2007 |
Dominion - Virginia Power/North Carolina (SERC) |
2:04 p.m. |
North, East and Central Virginia/Parts of Northeast North Carolina |
High Winds |
90 |
242,000 |
7:03 p.m. April 16 |
| May |
| 5/2/2007 |
Oncor Electric Delivery Company (ERCOT) |
1:30 p.m. |
North Texas, Dallas Fort Worth Metroplex and Surrounding Counties, South to Waco and North to Red River |
Severe Storms |
- |
300,000 |
8:00 p.m. May 03 |
| 5/10/2007 |
Crockett Cogeneration (WECC) |
9:57 a.m. |
San Francisco Bay Area, California |
Unit Tripped |
150 |
- |
1:47 p.m. May 10 |
| 5/14/2007 |
Crockett Cogeneration (WECC) |
11:15 a.m. |
San Francisco Bay Area, California |
Unit Tripped |
150 |
- |
1:50 p.m. May 14 |
| 5/15/2007 |
DTE Energy (Detroit Edison) (RFC) |
3:00 p.m. |
Southeastern Michigan |
Severe Thunderstorms |
500 |
66,000 |
7:00 a.m. May 17 |
| 5/16/2007 |
Northeast Utilities (NPCC) |
6:00 p.m. |
All of Connecticut |
Severe Storm |
- |
67,000 |
5:00 a.m. May 19 |
| 5/21/2007 |
Crockett Cogeneraton (WECC) |
1:48 p.m. |
San Franscisco Bay Area, California |
Unit Tripped |
140 |
- |
4:50 p.m. May 21 |
| June |
| 6/1/2007 |
State of California, Department of Water Resources (WECC) |
1:00 p.m. |
Restricted Hydroelectric Capability |
Fuel Supply Deficiency |
- |
- |
Ongoing |
| 6/5/2007 |
Idaho Power Company (WECC) |
10:56 a.m. |
Southwest Idaho and Eastern Oregon |
Load Shedding |
424 |
80,000 |
11:51 a.m. June 05 |
| 6/27/2007 |
Consolidated Edison of NY Inc (NPCC) |
3:41 p.m. |
Northern Manhattan NY (Yorkville) and SW Bronx (Motthaven, Melrose, High Bridge Sections) |
Lightning |
460 |
137,000 |
4:30 p.m. June 27 |
| 6/27/2007 |
New York Independent System Operator (NPCC) |
3:42 p.m. |
New York State |
Loss of Load |
460 |
- |
4:30 p.m. June 27 |
| 6/29/2007 |
Salt River Project (WECC) |
9:23 a.m. |
Metropolitan Phoenix Area |
Loss of Load |
399 |
98,700 |
10:09 a.m. June 29 |
| July |
| 7/3/2007 |
California Independent System Operator (WECC) |
10:59 a.m. |
CAISO Controlled Grid |
Public Appeal |
N/A |
N/A |
6:00 p.m. July 05 |
| 7/5/2007 |
DTE Energy (Detroit Edison) (RFC) |
7:00 p.m. |
Southeastern Michigan |
Severe Storm |
- |
69,000 |
7:00 a.m. July 08 |
| 7/6/2007 |
Idaho Power Company (WECC) |
5:18 p.m. |
Southeast Idaho and Eastern Oregon |
Electrical Separation/Load Shedding/Made Public Appeal |
60 |
0 |
6:20 p.m. July 06 |
| 7/10/2007 |
National Grid - NY (NPCC) |
11:00 a.m. |
Eastern New York |
Major Storms |
650 |
300,000 |
6:00 a.m. July 12 |
| 7/16/2007 |
PacifiCorp (WECC) |
4:17 p.m. |
St. George, Utah |
Fire/Load Shedding |
306 |
- |
9:00 p.m. July 16 |
| 7/18/2007 |
Exelon Corporation West ComEd (RFC) |
6:00 p.m. |
Northern Counties of Illinois |
Severe Weather |
300 |
135,000 |
2:00 a.m. July 19 |
| 7/19/2007 |
DTE Energy (Detroit Edison) (RFC) |
3:00 p.m. |
Southwestern Region of Service Territory |
Major Storm |
- |
60,000 |
11:30 p.m. July 22 |
| 7/19/2007 |
Dominion - Virginia Power/North Carolina Power (SERC) |
3:50 p.m. |
North, East and Central Virginia |
Major Storms |
72 |
107,000 |
10:15 p.m. July 19 |
| August |
| 8/8/2007 |
Progress Energy - Carolinas, Inc. (SERC) |
1:00 p.m. |
Portions of North Carolina and South Carolina |
Made Public Appeal |
N/A |
N/A |
9:00 p.m. August 08 |
| 8/8/2007 |
PJM Interconnection (RFC) |
3:56 p.m. |
Mid-Altantic Region of PJM |
Voltage Reduction/Made Public Appeal |
N/A |
N/A |
5:59 p.m. August 08 |
| 8/9/2007 |
Progress Energy - Carolinas, Inc. (SERC) |
12:45 p.m. |
Portions of North Carolina and South Carolina |
Made Public Appeal |
N/A |
N/A |
9:00 p.m. August 09 |
| 8/9/2007 |
Duquesne Light Company (RFC) |
2:53 p.m. |
Highland Area of Pittsburgh, Pennsylvania |
Severe Thunderstorms |
90 |
55,000 |
4:11 p.m. August 09 |
| 8/10/2007 |
Progress Energy - Carolinas, Inc. (SERC) |
12:20 p.m. |
Portions of North Carolina and South Carolina |
Made Public Appeal |
N/A |
N/A |
9:00 p.m. August 10 |
| 8/13/2007 |
Ameren Corporation (SERC) |
1:30 a.m. |
State of Missouri |
Severe Thunderstorm |
N/A |
63,000 |
12:00 a.m. August 14 |
| 8/14/2007 |
American Electric Power (CSWS) (SPP) |
2:00 p.m. |
CSWS Control Area of Southwest Power Pool Parts of Oklahoma, Texas, Louisiana, Arkansas |
Declared Energy Emergency Alert2/Heat Wave |
20 |
- |
6:00 p.m. August 14 |
| 8/16/2007 |
Dominion Virginia Power (SERC) |
9:30 p.m. |
Virginia and Eastern North Carolina - Primarily in Central Virginia |
Severe Weather |
200 |
93,300 |
10:49 p.m. August 17 |
| 8/19/2007 |
Dominion Virginia Power (SERC) |
11:34 p.m. |
Central and Eastern Virginia |
Severe Thunderstorms |
100 |
58,500 |
1:10 a.m. August 20 |
| 8/23/2007 |
Exelon Corporation West ComEd (RFC) |
4:00 p.m. |
Northern Illinois |
Severe Storms |
N/A |
629,590 |
10:49 p.m. August 28 |
| 8/24/2007 |
DTE Energy (Detroit Edison) (RFC) |
6:00 p.m. |
Southeastern Michigan |
Severe Storm |
N/A |
75,000 |
6:30 a.m. August 28 |
| 8/29/2007 |
Modesto Irrigation District (WECC) |
1:53 p.m. |
Modesto California and the Surrounding Areas |
Shed Load |
180 |
26,000 |
2:57 p.m. August 29 |
| 8/29/2007 |
California Independent System Operator (WECC) |
4:00 p.m. |
CAISO Controlled Grid |
Made Public Appeal |
N/A |
N/A |
6:00 p.m. August 30 |
| 8/31/2007 |
California Independent System Operator (WECC) |
12:45 p.m. |
CAISO Controlled Grid |
Declared Energy Emergency Alert 1/Heat wave |
N/A |
N/A |
8:00 p.m. August 31 |
| September |
| 9/3/2007 |
San Diego Gas and Electric Company (WECC) |
12:30 p.m. |
San Diego County, Southern Orange County, California |
High Temperatures/Made Public Appeals |
N/A |
N/A |
5:30 p.m. September 03 |
| 9/4/2007 |
San Diego Gas and Electric Company (WECC) |
8:30 a.m. |
San Diego County, Southern Orange County, California |
High Temperatures/Made Public Appeals |
N/A |
N/A |
3:30 p.m. September 04 |
| 9/5/2007 |
Luminant Energy Company, LLC (ERCOT) |
7:53 a.m. |
Central Texas, ERCOT Grid |
Severe Weather/Transmission Fault-Units Tripped |
1,084 |
N/A |
1:11 p.m. September 05 |
| 9/6/2007 |
State of California, Department of Water Resources (WECC) |
8:00 p.m. |
Hydro Electric System |
Fuel Supply Deficiency |
N/A |
N/A |
Ongoing |
| 9/13/2007 |
Entergy Corporation (SPP) |
4:00 a.m. |
Between Galveston and Beaumont, Texas |
Hurricane Humberto |
N/A |
118,000 |
7:00 a.m. September 14 |
| 9/17/2007 |
Crawfordsville Electric Light and Power (RFC) |
7:01 p.m. |
City of Crawfordsville, Indiana |
Electrical System Separation |
50 |
9,600 |
7:48 p.m. September 17 |
| 9/18/2007 |
Northern States Power Company (MRO) |
5:14 a.m. |
Minnesota, Wisconsin, North Dakota, South Dakota and Michigan |
Electrical System Separation/Load Shedding/ Implemented Emergency Alert/Severe Storms |
16 |
6,000 |
6:10 a.m. September 18 |
| 9/18/2007 |
Great River Energy (MRO) |
5:15 a.m. |
Minnesota, North Dakota, Manitoba |
Electrical System Separation/Load Shedding/ Implemented Emergency Alert/Severe Storms |
8,000-10,000 |
GRE (1,900) Total 11,175 |
6:30 a.m. September 18 |
| 9/18/2007 |
Midwest ISO (RFC) |
5:15 a.m. |
Manitoba, Minnesota, North Dakota, Portions of South Dakota and Wisconsin. Midwest ISO's Market subregions: OTP, NSP, GRE, ALTW, MP |
Electrical System Separation/Load Shedding/ Implemented Emergency Alert/ Severe Storms |
8,000-10,000 |
11,175 |
12:00 a.m. September 18 |
| 9/24/2007 |
New Covert Generating Company, LLC (RFC) |
1:38 p.m. |
Southwest Michigan |
Unit Tripped |
320 |
N/A |
4:26 p.m. September 24 |
| October |
| 10/18/2007 |
Puget Sound Energy (WECC) |
3:00 p.m. |
Western Washington |
High Winds |
N/A |
160,000 |
11:36 a.m. October 22 |
| 10/22/2007 |
Southern California Edison Company (WECC) |
2:01 p.m. |
Southern California |
Brush Fire/Load Shedding/Implemented Emergency Alert |
451 |
90,323 |
2:22 p.m. October 22 |
| 10/22/2007 |
California Independent System Operator (WECC) |
2:05 p.m. |
Southern California |
Brush Fire/Load Shedding |
700 |
300,000 |
2:22 p.m. October 22 |
| 10/22/2007 |
San Diego Gas and Electric Company (WECC) |
2:06 p.m. |
San Diego County, California |
Brush Fire/Load Shedding |
199 |
68,780 |
2:43 p.m. October 22 |
| 10/26/2007 |
Southern California Edison Company (WECC) |
6:44 a.m. |
Southern Califonia |
Brush Fire/Load Shedding |
280 |
20,345 |
10:46 a.m. October 26 |
| 10/26/2007 |
City of Riverside (WECC) |
6:44 a.m. |
Riverside, California |
Load Shedding |
240 |
104,000 |
10:43 a.m. October 26 |
| November |
| 11/3/2007 |
ISO New England (NPCC) |
6:00 p.m. |
Eastern Massachusetts, Rhode Island, Cape Cod |
Tropical Storm |
100 |
62,843 |
6:00 a.m. November 04 |
| December |
| 12/1/2007 |
ISO New England (NPCC) |
6:04 p.m. |
State of Maine |
Voltage Reduction/Made Public Appeal/Fuel Deficiency |
0 |
0 |
10:00 p.m. December 02 |
| 12/4/2007 |
Puerto Rico Electric Power Authority (PR) |
2:16 p.m. |
Island of Puerto Rico |
Voltage Reduction |
0 |
0 |
5:53 p.m. December 04 |
| 12/10/2007 |
American Electric Power (SPP) |
3:08 a.m. |
Tulsa, Oklahoma |
Ice Storm |
N/A |
256,663 |
8:00 a.m. December 19 |
| 12/11/2007 |
Westar Energy (MRO) |
4:00 a.m. |
Eastern half of the State of Kansas |
Ice Storm |
500 |
95,000 |
3:30 p.m. December 20 |
| 12/11/2007 |
Puerto Rico Electric Power Authority (PR) |
8:57 p.m. |
Island of Puerto Rico |
Voltage Reduction |
0 |
0 |
9:22 p.m. December 11 |
| 12/23/2007 |
Exelon Corporation West ComEd (RFC) |
1:00 a.m. |
The Entire ComEd Service Territory |
Severe Storm |
N/A |
237,000 |
9:00 p.m. December 23 |
| 12/23/2007 |
Consumers Energy (RFC) |
5:30 a.m. |
Lower 2/3 of Michigan Lower Peninsula |
Winter Storm |
50 |
134,288 |
6:07 p.m. December 25 |