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Major Disturbances and Unusual Occurrences
                                         
Table B.1.    xls   format     Electric Power Monthly

Table B.1. Major Disturbances and Unusual Occurrences, Year-to-Date through September 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 (TRE) 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 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 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 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 (TRE) 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 (TRE) 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
July     
7/1/2008 Crockett Cogeneration (WECC) 7:31 a.m. San Francisco Bay Area, California Unit Tripped 160 - 12:00 p.m. July 01
7/2/2008 Consumers Energy (RFC) 3:00 p.m. Lower 2/3 of Michigan's Lower Peninsula Severe Weather 125 239,663 12:00 p.m. July 06
7/2/2008 State of California, Department of Water Resources (WECC) 4:00 p.m. Restricted Hydroelectric Capability Fuel Supply Deficiency - - Ongoing
7/2/2008 California ISO (WECC) 7:16 p.m. Santa Barbara County, California, near Goleta Wild Land Fire 208 200,000 11:28 p.m. July 02
7/2/2008 Southern California Edison (WECC) 7:36 p.m. Goleta and Santa Barbara Areas of Southern California Brush Fire/Lines Loss/Transmission Emergency Declared 119 37,784 1:10 a.m. July 03
7/2/2008 Detroit Edison Company-DTE (RFC) 8:00 p.m. Southeastern Michigan (DTE Service Territory) Thunderstorms N/A 56,000 3:00 a.m. July 03
7/7/2008 California ISO (WECC) 12:15 p.m. ISO Balancing Area Heat Wave/Potential Fire Threat/Made Public Appeals 0 0 5:00 p.m. July 10
7/10/2008 Crockett Cogeneration (WECC) 2:22 p.m. San Francisco Bay Area, California Unit Tripped 240 - 5:21 p.m. July 10
7/21/2008 MidAmercian Energy Company (MRO) 12:49 a.m. Sioux City, Carroll, Des Moines, Iowa City, and Davenport Iowa, Rock Island, Moline, and Surrounding Area of Illinois Storm 170 185,000 6:00 p.m. July 22
7/22/2008 Duke Energy Indiana (RFC) 3:00 a.m. Indiana Severe Thunderstorms N/A 58,000 7:32 p.m. July 24
7/22/2008 Duke Energy Ohio (RFC) 3:00 a.m. Southwest Ohio Severe Thunderstorms N/A 56,000 3:30 a.m. July 23
7/22/2008 Southwestern Public Service Company (SPP) 2:00 p.m. Texas Panhandle and Southeastern New Mexico Indequate Electric Resources to Serve Load/Public Appeal N/A - 5:09 a.m. July 24
7/23/2008 American Electric Power (TRE) 5:56 a.m. Port Isabel, Harlingen, Weslaco, Pharr, San Benito, Mission, McAllen, Edinburg, Texas Hurricane Dolly 703 211,266 4:00 a.m. July 31
7/24/2008 ISO New England (NPCC) 7:23 a.m. Bangor Hydro System, northern Maine Electric System Separation/Severe Lightning Storms 180 110,000 5:41 p.m. July 24
August   
8/2/2008 Southern Company (SERC) 8:00 p.m. Georgia and Alabama Severe Thunderstorms 400 131,115 5:30 a.m. August 03
8/3/2008 Entergy Corporation (SERC) 1:30 a.m. Mississippi, Louisiana, Texas Severe Thunderstorms N/A 59,500 4:15 a.m. August 03
8/4/2008 Exelon Corporation West ComEd (RFC) 6:00 p.m. The ComEd Territory Severe Weather N/A 653,000 8:00 a.m. August 06
8/5/2008 Northern Indiana Public Service Company (RFC) 3:00 a.m. Northwest Indiana Severe Storms 0 63,000 9:50 a.m. August 05
8/9/2008 XCEL (Southwest Public Service Company) (SPP) 12:00 p.m. Texas Panhandle and Eastern New Mexico Declared Energy Emergency Alert 1/Made Public Appeals 0 0 8:46 p.m. August 09
8/15/2008 Seattle City Light (WECC) 12:52 p.m. Part of Seattle's Downtown Made Public Appeals 100 8,000 5:00 p.m. August 15
8/16/2008 Lubbock Power and Light (TRE) 5:23 a.m. City of Lubbock Lightning/Transmission Equipment Damage 153 71,823 7:30 a.m. August 16
8/16/2008 Puerto Rico Electric Power Authority (PR) 8:14 a.m. Island of Puerto Rico Shed Firm Load/Voltage Reduction 300 200,000 3:00 p.m. August 16
8/18/2008 Puerto Rico Electric Power Authority (PR) 7:22 p.m. North Part of Island Shed Firm Load 225 100,000 6:44 p.m. August 19
8/19/2008 Florida Power and Light (FRCC) 9:29 a.m. Florida Tropical Storm Fay N/A 101,950 10:00 p.m. August 22
8/21/2008 Progress Energy Florida (FRCC) 7:00 p.m. Alachua, Bay, Brevard, Citrus, Columbia, Dixie, Flagler, Franklin, Gilchrist, Gulf, Hamilton, Hardee, Hernando, Highlands, Jefferson, Lafayette, Lake, Leon, Levy, Madison, Marion, Orange, Osceola, Pasco, Pinellas, Polk, Seminole, Sumter,  Suwannee, Taylor, Volusia and Wakulla Counties in Florida Tropical Storm Fay N/A 430,000 8:00 a.m. August 25
8/22/2008 Mirant Chalk Point LLC (RFC) 12:00 p.m. - Fuel Supply Emergency-Low Coal Inventory Levels 0 0 12:00 p.m. August 23
8/24/2008 Southern Company (SERC) 4:30 a.m. Georgia and Alabama Tropical Storm Fay 110 87,390 2:00 p.m. August 24
8/31/2008 Dow Chemical Company (SERC) 7:30 a.m. Plaquemine, Louisiana Fuel Supply Curtailed 200 0 9:00 a.m. September 19
8/31/2008 Entergy Corporation (SERC) 7:00 p.m. Louisiana, Mississippi, Arkansas Hurricane Gustav N/A 964,000 9:00 a.m. September 03
September
9/1/2008 Louisiana Generating LLC (SERC) 10:30 a.m. Primarily South and Central Louisiana Hurricane Gustav 400 150,000 7:22 p.m. September 13
9/1/2008 Cleco Power LLC (SERC) 11:45 a.m. Bayou Division and North Lake Division, Louisiana Hurricane Gustav N/A 246,092 4:00 p.m. September 10
9/6/2008 Progress Energy Carolinas (SERC) 7:45 a.m. Eastern North Carolina Tropical Storm Hanna N/A 57,000 10:30 a.m. September 06
9/6/2008 Dominion-Virginia Power (SERC) 2:15 p.m. North East North Carolina and Virginia Tropical Storm Hanna 220 64,463 4:06 p.m. September 06
9/8/2008 State of California, Department of Water Resources (WECC) 10:03 p.m. A.D. Edmonston Pumping Plant Fuel Supply Deficiency 300 0 12:28 a.m. September 09
9/12/2008 Entergy Corporation (SERC) 5:45 a.m. Primarily Southeast Texas, Louisiana, and Arkansas Hurricane Ike N/A 705,000 1:00 p.m. September 14
9/12/2008 Electric Reliability Council of Texas (TRE) 6:21 p.m. Greater Houston Area-Eastern Region of ERCOT Hurricane Ike N/A 2,504,366 11:59 p.m. October 01
9/12/2008 CenterPoint Energy (TRE) 6:21 p.m. Greater Houston-Galveston Metro Area Hurricane Ike 8,087 2,142,678 11:59 p.m. October 01
9/12/2008 Texas New Mexico Power Company (TRE) 8:00 p.m. Galveston and Brazoria Counties Hurricane Ike 650 113,247 7:00 p.m. September 27
9/13/2008 Louisiana Generating LLC (SERC) 10:24 a.m. Southwest Louisiana Hurricane Ike 40 50,000 2:40 p.m. September 27
9/13/2008 Oncor Electric Delivery Company LLC (TRE) 12:00 p.m. North, Central and East Texas Hurricane Ike N/A 238,392 8:00 a.m. September 15
9/13/2008 American Electric Power CSWS (SPP) 4:00 p.m. Texas and Louisana Hurricane Ike N/A 184,501 7:44 p.m. September 16
9/14/2008 Midwest ISO (RFC) 6:30 a.m. Ohio, Kentucky, Indiana Tropical Depression Ike N/A 875,000 2:38 p.m. September 14
9/14/2008 Ameren Corporation (MRO) 7:30 a.m. Missouri and Illinois Hurricane Ike N/A 107,000 3:00 p.m. September 18
9/14/2008 Owensboro Municipal Utilities (RFC) 10:01 a.m. City of Owensboro, Kentucky High Winds 70 18,000 5:00 p.m. September 21
9/14/2008 Louisville Gas/Kentucky Utilities (RFC) 11:30 a.m. State of Kentucky Tropical Depression Ike N/A 375,000 4:30 p.m. September 14
9/14/2008 Dayton Power and Light (RFC) 2:00 p.m. Dayton Ohio Area Hurricane Ike 1,000 95,000 12:00 p.m. September 17
9/14/2008 American Electric Company (RFC) 4:00 p.m. Northern Indiana, Central and Central Southern Ohio Wind Storm N/A 650,000 11:00 p.m. September 20
9/14/2008 Pennsylvania Electric Company (RFC) 5:00 p.m. Western Pennsylvania Wind Storm 72 124,596 12:38 p.m. September 19
9/14/2008 Ohio Edison Company (RFC) 5:00 p.m. Southern, Eastern, and Central Ohio Wind Storm 469 564,728 5:11 p.m. September 22
9/14/2008 Cleveland Electric Illuminating Company (RFC) 5:00 p.m. Northeast Ohio Wind Storm 430 245,164 3:20 a.m. September 22
9/14/2008 Duquesne Light Company (RFC) 7:00 p.m. Allegheny and Beaver Counties in Pennsylvania Tropical Depression Ike 600 105,000 11:59 p.m. September 14
9/15/2008 Allegheny Power (RFC) 12:37 a.m. Western Pennsylvania Tropical Depression Ike 546 160,875 4:30 p.m. September 19
9/22/2008 Puerto Rico Electric Power Authority (PR) 5:49 p.m. Island of Puerto Rico Shed Firm Load 125 43,600 6:39 a.m. September 22
9/30/2008 Pacific Gas and Electric Company (WECC) 2:02 p.m. Plumas County, California Electrical System Separation 30 10,000 2:05 p.m. September 30
  [1] Estimated values.
  Note: Estimates for 2008 are preliminary.
  Source: Form OE-417, "Electric Eergency Incident and Disturbance Report."

More Tables on Major Disturbances and Unusual Occurrences
Formats
Table B2 Major Disturbances and Unusual Occurrences html xls
Federal Electrical Emergency Alert and Incident Information (Summary) html

see also:
Electric Power Monthly
Electric Power Annual
annual electricity statistics back to 1949
projected electricity capacity to 2030
international electricity statistics