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Table B.1. Major Disturbances and Unusual Occurrences, Year-to-Date
through June 2008 |
| Date |
Utility/Power Pool (NERC Region) |
Time |
Area Affected |
Type of Disturbance |
Loss (megawatts) |
Number of Customers Affected [1] |
Restoration |
| January |
| 1/4/2008 |
Pacific Gas and Electric Company (WECC) |
4:00 a.m. |
Northern California |
Winter Storm |
500 |
2,606,931 |
5:00 p.m. January 14 |
| 1/4/2008 |
Sacramento Municipal Utility District (WECC) |
7:47 a.m. |
Sacramento County |
Severe Storm |
300 |
150,000 |
4:30 p.m. January 04 |
| 1/29/2008 |
Crockett Cogeneration (WECC) |
5:00 a.m. |
San Francisco Bay Area, California |
Exciter Faulted |
N/A |
- |
12:17 p.m. January 29 |
| 1/29/2008 |
Entergy Corporation (SERC) |
4:00 p.m. |
Arkansas, Mississippi, North Louisiana |
Severe Thunderstorms |
N/A |
110,000 |
8:00 a.m February 03 |
| 1/29/2008 |
DTE Energy - Detroit Edison (RFC) |
10:00 p.m. |
Southeastern Michigan |
Wind/Ice Storm |
N/A |
86,915 |
6:30 p.m. February 01 |
| 1/29/2008 |
Dayton Power and Light (RFC) |
11:23 p.m. |
South Metropolitan Areas of Dayton, OHio |
High Winds |
380 |
45,000 |
12:48 a.m. January 30 |
| 1/30/2008 |
Niagara Mohawk Power Corporation (NPCC) |
3:06 a.m. |
Western, New York |
High Winds |
50 |
54,316 |
2:50 p.m. February 01 |
| February |
| 2/1/2008 |
Crockett Cogeneration (WECC) |
6:00 a.m. |
San Francisco Bay Area, California |
Equipment Faulted |
N/A |
- |
7:49 a.m. February 01 |
| 2/2/2008 |
Crockett Cogeneration (WECC) |
3:58 a.m. |
San Francisco Bay Area, California |
Equipment Faulted |
N/A |
- |
4:27 p.m. February 02 |
| 2/5/2008 |
LG&E Energy/Kentucky Utilities (SERC) |
10:00 p.m. |
State of Kentucky |
Severe Weather |
N/A |
76,000 |
3:00 a.m. February 06 |
| 2/6/2008 |
Tennessee Valley Authority (SERC) |
9:00 a.m. |
Mid to West Tennessee |
Severe Weather |
N/A |
57,000 |
11:00 a.m. February 06 |
| 2/9/2008 |
Pacific Gas and Electric Company (WECC) |
11:59 a.m. |
Near Arnold, California |
Electrical System Separation |
0 |
0 |
3:33 p.m. February 09 |
| 2/10/2008 |
Allegheny Power (RFC) |
4:00 a.m. |
Southwestern Pennsylvania, West Virginia, Virginia, Maryland |
Severe Weather |
412 |
100,969 |
8:43 p.m. February 12 |
| 2/10/2008 |
PJM Interconnection LLC (RFC) |
11:00 a.m. |
Virginia, West Virginia, Ohio, Pennsylvania |
High Winds |
N/A |
212,560 |
11:36 p.m. February 10 |
| 2/10/2008 |
American Electric Power (RFC) |
11:00 a.m. |
Virginia and West Virginia Area of AEP |
High Winds |
N/A |
97,342 |
5:05 p.m. February 14 |
| 2/10/2008 |
Dominion-Virginia Power (SERC) |
2:06 p.m. |
Dominion Service Territory |
High Winds |
170 |
114,618 |
11:36 p.m. February 10 |
| 2/10/2008 |
Duke Energy Carolinas (SERC) |
6:02 p.m. |
Greenboro, North Carolina and I-40 Corridor |
High Winds |
300 |
50,718 |
4:00 a.m. February 11 |
| 2/12/2008 |
Entergy Corporation (SERC) |
3:00 p.m. |
Arkansas, Mississippi, Louisiana |
Severe Weather |
N/A |
54,000 |
5:00 p.m. February 15 |
| 2/13/2008 |
ISO New England (NPCC) |
6:43 p.m. |
State of Maine |
Ice Storm |
50 |
50,462 |
12:00 p.m. February 14 |
| 2/14/2008 |
PacifiCorp (WECC) |
8:15 a.m. |
Utah |
Load Shedding |
2,818 |
74,031 |
10:46 a.m. February 14 |
| 2/15/2008 |
Pacific Gas and Electric Company (WECC) |
3:06 p.m. |
Antioch, California |
Electrical System Separation |
10 |
10,008 |
7:36 p.m. February 15 |
| 2/25/2008 |
Owensboro Municpal Utilities (RFC) |
8:00 a.m. |
Restricted Coal Capability |
Fuel Supply Deficiency |
N/A |
0 |
8:00 a.m. March 12 |
| 2/26/2008 |
Southern Company (SERC) |
5:00 a.m. |
Southern Service Area/Alabama and Georgia |
Thunderstorms |
484 |
145,380 |
3:00 p.m. February 26 |
| 2/26/2008 |
Florida Municipal Power Agency (FRCC) |
1:09 p.m. |
Various Cities in Florida |
Under Frequency/Load Shedding |
140 |
47,661 |
2:10 p.m. February 26 |
| 2/26/2008 |
Tampa Electric Company (FRCC) |
1:09 p.m. |
Tampa Electric Service Territory |
Under Frequency/Load Shedding |
318 |
53,965 |
2:40 p.m. February 26 |
| 2/26/2008 |
Florida Power and Light (FRCC) |
1:09 p.m. |
Primary Dade County Florida |
Transmission Equipment Failure |
3,200 |
584,384 |
4:11 p.m. February 26 |
| 2/26/2008 |
Seminole Electric Cooperative (FRCC) |
1:09 p.m. |
FRCC Region-West Coast Florida |
Shed Firm Load |
120 |
56,000 |
1:47 p.m. February 26 |
| 2/26/2008 |
Progress Energy Florida (FRCC) |
1:10 p.m. |
The entire PEF system was affected, including the following counties: Alachua, Bay, Citrus, Columbia, Dixie, Franklin, Gilchrist, Gulf, Hamilton, Hardee, Hernando, Highlands, Jefferson, Lafayette, Lake, Levy, Madison, Marion, Orange, Osecola, Pasco, Pinellas, Polk, Seminole, Sumter, Suwannee, Taylor, Volusia, Wakulla. |
Under Frequency/Load Shedding |
500 |
150,000 |
3:45 p.m. February 26 |
| March |
| 3/4/2008 |
Duke Energy Carolinas (SERC) |
9:30 p.m. |
North and South Carolina |
Thunderstorms |
300 |
55,267 |
10:45 p.m. March 04 |
| 3/8/2008 |
Dominion-Virginia Power (SERC) |
2:14 p.m. |
Virginia and Eastern Part of North Carolina |
Windstorm |
210 |
141,130 |
9:59 p.m. March 08 |
| 3/8/2008 |
PECO Energy (RFC) |
4:00 p.m. |
Chester, Montgomery, Delaware, Philadelphia and Bucks County, Pennsylvania |
Severe Weather |
N/A |
168,449 |
1:44 p.m. March 10 |
| 3/15/2008 |
Southern Company (SERC) |
8:55 p.m. |
Parts of Alabama and Georgia |
Major Storm |
200 |
157,744 |
8:30 p.m. March 16 |
| April |
| 4/4/2008 |
Entergy Corporation (SERC) |
12:31 p.m. |
Arkansas, North Louisiana, Mississippi |
Severe Thunderstorms |
N/A |
122,600 |
5:00 p.m. April 04 |
| 4/9/2008 |
Oncor Electrtic Delivery Company LLC (ERCOT) |
4:00 p.m. |
North, Central and East Texas |
Severe Weather |
N/A |
488,689 |
1:15 a.m. April 13 |
| May |
| 5/8/2008 |
California ISO (WECC) |
10:21 a.m. |
California |
Load Shedding |
483 |
0 |
12:56 a.m. May 08 |
| 5/11/2008 |
Southern Company (SERC) |
6:00 a.m. |
Georgia |
Severe Thunderstorms |
100 |
80,539 |
2:30 p.m. May 12 |
| 5/11/2008 |
Crawfordsville Electric Light and Power (RFC) |
4:50 p.m. |
City of Crawfordsville, Indiana |
Electric System Separation |
47 |
9,700 |
8:43 p.m. May 11 |
| 5/12/2008 |
Atlantic City Electric (RFC) |
12:01 a.m. |
Cape May, Cumberland, Gloucester, Salem, Camden, Atlantic, Burliington Counties, New Jersey |
Severe Storm |
55 |
135,000 |
12:00 a.m. May 14 |
| 5/27/2008 |
ISO New England (NPCC) |
2:02 p.m. |
South West Connecticut |
Lightning Storm |
130 |
56,400 |
3:52 p.m. May 27 |
| 5/30/2008 |
Exelon Corporation-ComEd (RFC) |
9:30 a.m. |
Northern and Western Counties of Illinois |
Severe Storms |
N/A |
109,000 |
11:00 p.m. May 30 |
| 5/30/2008 |
Entergy Services, Inc. (SERC) |
2:05 p.m. |
South Louisiana |
Load Shedding, Inadequate Electric Resources to Serve Load |
200-250 |
N/A |
8:00 p.m. May 30 |
| 5/30/2008 |
Indianapolis Power and Light (RFC) |
10:00 p.m. |
Northeastern Marion County, Indiana |
Severe Thunderstorms |
N/A |
70,000 |
11:59 p.m. June 04 |
| June |
| 6/3/2008 |
Allegheny Power (RFC) |
5:00 p.m. |
Maryland, West Virginia, Virginia |
Severe Weather |
634 |
157,168 |
11:00 p.m. June 07 |
| 6/4/2008 |
Baltimore Gas and Electric Company (RFC) |
3:00 p.m. |
Entire BGE Service Territory |
Severe Storms |
N/A |
108,000 |
5:30 a.m. June 07 |
| 6/4/2008 |
Potomac Electric Power Company (RFC) |
3:00 p.m. |
Montgomery, Prince Georges, Maryland, Washington, D.C. |
Lightning Storm |
N/A |
249,408 |
1:00 a.m. June 05 |
| 6/4/2008 |
Dominion-Virginia Power (SERC) |
3:04 p.m. |
Northern Virginia |
Thunderstorms |
850 |
253,800 |
9:30 p.m. June 05 |
| 6/4/2008 |
Puerto Rico Electric Power Authority (PR) |
3:14 p.m. |
Island of Puerto Rico |
Load Shedding/Voltage Reduction |
90 |
100,948 |
3:46 p..m. June 04 |
| 6/6/2008 |
Consumers Energy (RFC) |
3:18 p.m. |
Lower 2/3 of Michigan's Lower Peninsula |
Lightning Storm |
100 |
358,000 |
8:00 a.m. June 12 |
| 6/8/2008 |
Exelon Corporation-ComEd (RFC) |
9:30 a.m. |
The Entire ComEd Territory |
Severe Weather |
N/A |
125,000 |
7:00 a.m. June 09 |
| 6/8/2008 |
Detroit Edison Company-DTE (RFC) |
6:00 p.m. |
Southwestern Michigan (DECO Service Territory) |
Severe Storm |
500 |
150,000 |
11:30 p.m. June 16 |
| 6/9/2008 |
Entergy Services, Inc. (SERC) |
2:00 p.m. |
Entergy System |
Indequate Electric Resources to Serve Load |
300 |
19 |
7:00 p.m. June 09 |
| 6/9/2008 |
Public Service Electric and Gas (RFC) |
2:52 p.m. |
Area Around West Orange Switching Station, New Jersey |
Fire/Breaker Failure |
215 |
75,654 |
8:25 p.m. June 09 |
| 6/10/2008 |
National Grid (NPCC) |
11:00 a.m. |
Upstate New York |
Severe Storm |
400 |
68,000 |
5:30 p.m. June 13 |
| 6/10/2008 |
Entergy Services, Inc. (SERC) |
2:00 p.m. |
Entergy System |
Inadequate Electric Resources to Serve Load |
300 |
19 |
6:00 p.m. June 10 |
| 6/10/2008 |
Public Service Electric and Gas (RFC) |
6:00 p.m. |
Bergen, Essex and Hudson Counties, New Jersey |
Severe Storms |
N/A |
248,800 |
11:30 a.m. June 14 |
| 6/10/2008 |
PECO Energy (RFC) |
7:00 p.m. |
Chester, Montgomery, Delaware, Philadelphia and Bucks County, Pennsylvania |
Severe Thunderstorms |
N/A |
198,000 |
3:59 p.m. June 14 |
| 6/10/2008 |
ISO New England (NPCC) |
11:00 p.m. |
All Six New England States |
Storm |
50 |
60,000 |
9:00 a.m. June 11 |
| 6/11/2008 |
New York Independent System Operator (NPCC) |
1:15 p.m. |
New York State |
Uncontrolled Loss |
200 |
61,000 |
2:05 p.m. June 11 |
| 6/12/2008 |
Midwest ISO, ITC, ALTW (RFC) |
3:30 p.m. |
East Central Iowa |
Flooding and Uncontrolled Loss |
200 |
21,000 |
4:00 p.m. June 18 |
| 6/15/2008 |
Exelon Corporation-ComEd (RFC) |
8:00 a.m. |
The Entire ComEd Territory |
Severe Weather |
N/A |
165,000 |
8:00 p.m. June 15 |
| 6/15/2008 |
Crawfordsville Electric Light and Power (RFC) |
7:06 p.m. |
City of Crawfordsville, Indiana |
Electrical System Separation |
57 |
9,700 |
8:42 p.m. June 15 |
| 6/16/2008 |
Dominion-Virginia Power (SERC) |
4:15 p.m. |
Northern Virginia |
Thunderstorms |
800-1,000 |
115,000 |
11:19 p.m. June 16 |
| 6/17/2008 |
Oncor Electric Delivery Company LLC (ERCOT) |
9:01 a.m. |
North, Central and East Texas |
Severe Thunderstorms |
N/A |
234,393 |
8:30 p.m. June 19 |
| 6/17/2008 |
Southwestern Public Service Company (SPP) |
8:35 p.m. |
Southwestern Public Service Company Operating in the Panhandle of Texas and New Mexico |
Electrical System Separation/Severe Thunderstorms |
560 |
18,000 |
1:55 a.m. June 18 |
| 6/17/2008 |
Golden Spread Electric Cooperative, Inc (ERCOT) |
8:40 p.m. |
Texas Panhandle and Texas South Plains Regions, and Oklahoma Panhandle |
Thunderstorms/Uncontrolled Loss of Load |
276 |
37,330 |
11:00 p.m. June 17 |
| 6/21/2008 |
Pacific Gas and Electric Company (WECC) |
3:09 p.m. |
Near Rogers Flat, California |
Electrical System Separation/Severe Lightning Storms |
3 |
477 |
6:53 p.m. June 21 |
| 6/22/2008 |
Northern Indiana Public Service Company (RFC) |
4:55 p.m. |
Northwest Indiana |
Lightning Stirke/Uncontrolled Loss of Load |
650 |
N/A |
5:05 p.m. June 22 |
| 6/23/2008 |
Northern Indiana Public Service Company (RFC) |
1:44 p.m. |
Northcentral Indiana |
Fire/Breaker Failure |
425 |
N/A |
1:45 p.m. June 23 |
| 6/23/2008 |
Progress Energy Florida (FRCC) |
4:52 p.m. |
Pinellas County, Florida |
Transmission Equipment Failure/Load Shedding |
113 |
32,593 |
11:28 p.m. June 23 |
| 6/26/2008 |
Detroit Edison Company-DTE (RFC) |
5:00 p.m. |
Southeastern Michigan (DTE Service Territory) |
Thunderstorms |
N/A |
53,000 |
9:30 p.m. June 26 |
| 6/27/2008 |
Omaha Public Power District (MRO) |
4:30 p.m. |
Omaha, Nebraska (Metro Area) |
Severe Wind Storm |
650 |
126,000 |
5:30 p.m. June 27 |