In the aftermath of Isaac, it was very helpful to check the power outage map provided by our local electricity supplier. I would consult the map before I traveled to any part of the city to see where I could expect traffic lights to be out. The map is also helpful to determine when power will be restored to certain parts of the area. Below are some of the outage maps I could find for the areas affected by Sandy. Please include links to others I may have missed and I will update the list.
Power Outage Overview Map:
http://google.org/...
(thanks to Sylv for locating this!)
Connecticut:
United Illuminating - http://www.uinet.com/...
Connecticut Light and Power - http://outage.cl-p.com/...
Delaware
DelMarVa Power - http://www.delmarva.com/...
Indiana
Duke Energy: http://www.duke-energy.com/...
Indianapolis Power and Light - http://apps.iplpower.com/...
Kentucky
Duke Energy - http://www.duke-energy.com/...
Maryland:
Baltimore Gas and Electric - http://www.bge.com/...
Potomac Edision - http://outages.firstenergycorp.com/...
DelMarVa Power - http://www.delmarva.com/...
Maine
Central Maine Power - http://outagemap.cmpco.com/...
Bangor Hydro - http://www.bangorhydro.com/...
Massachusetts
Boston Area via National Grid - https://www1.nationalgridus.com/...
Western Massachusetts Electric - http://outage.wmeco.com/...
NSTAR - http://outage.nstar.com/...
New Hampshire
Public Service of New Hampshire - http://outage.psnh.com/...
New Jersey:
Orange and Rockland Power - http://apps.coned.com/...
Atlantic City Electric - http://www.atlanticcityelectric.com/...
PSEG - http://www.pseg.com/...
Jersey Central Power and Light - http://outages.firstenergycorp.com/...
New York:
New York City (Con Ed): http://apps.coned.com/...
Central Hudson Valley (Cen Hud): http://stormcentral.cenhud.com/...
Long Island (LIPA): http://www.lipower.org/...
Northern and Western NY (NYSEG): http://outagemap.nyseg.com/...
Niagara Mohawk: https://www1.nationalgridus.com/...
NYSEG - http://outagemap.nyseg.com/...
Rochester Gas and Electric - http://outagemap.rge.com/...
North Carolina:
Duke Energy: http://www.duke-energy.com/...
Dominion Power - https://www.dom.com/...
Ohio
Duke Energy - http://www.duke-energy.com/...
AEP Ohio - https://www.aepohio.com/... (Need an account to check outages)
Toledo Edison - http://outages.firstenergycorp.com/...
Pennsylvania
WestPenn Power - http://outages.firstenergycorp.com/...
Penelec - http://outages.firstenergycorp.com/...
PennPower - http://outages.firstenergycorp.com/...
Met-Ed - http://outages.firstenergycorp.com/...
PPL - https://www.pplelectric.com/...
PECO - https://www.peco.com/...
South Carolina:
Duke Energy: http://www.duke-energy.com/...
Vermont
Statewide power outages - http://www.vtoutages.com/
Green Mountain Power - https://wss.greenmountainpower.com/...
Vermont Electical Cooperative - http://www.vermontelectric.coop/...
Virginia
DelMarVa Power - http://www.delmarva.com/...
Dominion Power - https://www.dom.com/...
Appalachian Power - http://www.aepcustomer.com/...
Washington D.C
PEPCO - http://www.pepco.com/...
West Virginia
Potomac Edision - http://outages.firstenergycorp.com/...
Appalachian Power - http://www.aepcustomer.com/...
I hope you find this helpful