20070416 Press Releases for Baltimore Gas and Electric

Press Releases for: Baltimore Gas & Electric

April 16th, 2007

Baltimore Gas and Electric Company Mobilizes Storm Center In Response to Power Outages Caused by Heavy Rain and High Wind

More than 55,000 customers have been restored Ongoing wind is likely to cause new outages throughout the day and evening

BALTIMORE, April 16, 2007 - Baltimore Gas and Electric Company (BGE), a subsidiary of Constellation Energy (NYSE: CEG), today announced that it is aggressively working to restore service to customers interrupted as a result of heavy rain and high wind which began over the weekend. Because the wind is expected to continue into tonight, it is likely that new outages will occur throughout today and this evening. As a result, it is too early to determine when service to all customers will be restored. As of this afternoon, service had been restored to approximately 55,000 of the 110,000 customers who have experienced outages thus far.

"BGE began monitoring this storm late last week in anticipation of significant rainfall followed by intense wind, causing service interruptions for our customers," said Stephen J. Woerner, vice president of electric transmission and distribution for BGE. "Unlike isolated or fast moving storms, this ongoing event has the potential to create new power outages throughout the day and could cause some customers to experience multiple outages. BGE crews are working and will continue to work to restore service as safely and as quickly as possible, but it is simply too early to provide an estimated time of full restoration. We thank our customers for their patience in advance."

Because of the high wind it may be unsafe for employees to work in bucket trucks. As a result, some restoration activity may be delayed until the wind subsides. Approximately 400 BGE and contract personnel are actively involved in the restoration effort and the company has requested assistance from out-of-town utilities and other external personnel. At this time, BGE is awaiting a response to that request.

The safety of BGE's customers and employees is always a top priority. Customers should avoid downed power lines and report them immediately by calling 1-877-778-2222. Customers also should call this number to report power outages where downed wires are not apparent. Only qualified BGE personnel or contractors are authorized to remove debris from power lines. Customers should never approach downed wires for any reason.

Customers should always be prepared for weather related power outages and can do so in part, by keeping the following items readily available:

Flashlights - not candles

Fresh batteries

Battery operated clock radio

Corded telephone

Fully charged cell phone

Non-perishable foods

Blankets

Customers also should consider filling the fuel tanks of their vehicles in the event a power outage affects service to neighborhood gas stations. For our customers who rely on well water, filling a bathtub with water in advance of severe weather is strongly encouraged.

Additionally, customers with special needs such as those who may be elderly, handicapped or dependent on electricity for medical equipment, should have alternate arrangements in place should they experience an extended power outage. Once service restoration begins, BGE's priorities are public safety issues and critical facilities, such as 911 centers, hospitals and pumping stations. Then restoration is generally scheduled so that the greatest number of customers can be restored as quickly and as safely as possible. However, in cases of extended power outages, consideration is also given to customers who have been without service for the longest. For more information about BGE storm preparation and how customers can protect their families and property, go to http://www.bge.com/.

In addition to monitoring current and approaching weather conditions which could result in service interruptions, BGE regularly conducts emergency training drills during which all aspects of storm related service restoration are tested. BGE also reviews its Electric Delivery Emergency Response Plan to ensure that storm response procedures are up-to-date and in line with industry standards.

BGE is a member of Constellation Energy, (www.constellation.com), a FORTUNE 200 company with 2006 revenues of $19.2 billion. Constellation Energy is the nation's largest competitive supplier of electricity to large commercial and industrial customers and the nation's largest wholesale power seller. Constellation Energy also manages fuels and energy services on behalf of energy intensive industries and utilities. It owns a diversified fleet of 78 generating units located throughout the United States, totaling approximately 8,700 megawatts of generating capacity. The company delivers electricity and natural gas through the Baltimore Gas and Electric Company (BGE), its regulated utility in Central Maryland.

Contact: Rob Gould
Linda Foy
410 470-7433