Our Work to Upgrade Reliability District of Columbia Progress Results

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1. TRIMMING TREES

Many of Pepco’s recent outages are a direct result of We trimmed trees along 42.72 miles of power lines intrees falling on power lines. Pepco is aggressively the District of Columbia during December, bringing thetrimming trees along public rights of way to obtain annual total to 407 miles. The annual target for 2015increased clearance between the overhead electric was 406 miles.wires and existing trees. Pepco also will work withDistrict of Columbia communities and homeownersto remove potentially hazardous trees which falloutside of the company’s right of way area.

2. IMPROVING PRIORITY FEEDERS

A feeder is an electric power line that distributes In December, we completed work in the areas of power to up to 1,100 customers within a specific Forest Hills and Capitol Hill. We completed work on allgeographic area. Each year, across the District of 16 projects during 2015.Columbia, Pepco selects feeders for additional workto improve performance. As part of the ReliabilityEnhancement Plan, Pepco has expanded this programby 45 percent.

3. PREPARING FOR SYSTEM GROWTH

Similar to upgrading electric service to your home to In December, we completed projects in the areas ofaccommodate new appliances and electronic devices, Downtown, American University, WashingtonPepco is continuing to upgrade power lines and is Highlands and Columbia Heights. We continued adding circuits to accommodate new customers and work on projects in the areas of Georgetown, support increased energy use by existing customers. Foggy Bottom, Petworth and Brookland. We

completed work on eight projects to date. We plannedto complete 22 projects during 2015. However, workwas delayed on some of the projects due to permittingissues or waiting for outages. The work on theremaining projects will carry over into 2016.

DECEMBER 2015 UPDATE

4. INSTALLING ADVANCED TECHNOLOGIES

Pepco is installing advanced control systems thatallow the electric system to identify problems andperform switching automatically. The technology willautomatically isolate failed pieces of equipment andrestore most of the affected customers withinminutes of the failure.

5. IMPROVING ADDITIONAL FEEDERS

A feeder is an electric power line that distributespower to up to 1,100 customers within a specificgeographic area. This program supplements thepriority feeder program and focuses on addressingequipment, vegetation, weather and animal-relatedissues that negatively impact reliability performance.As part of the Reliability Enhancement Plan, Pepcowill expand this program by 45 percent.

PROGRESS REPORT – DISTRICT OF COLUMBIA December 2015 UPDATE

In December, we continued work on projects in theareas of Cathedral Heights, Brightwood Park, Benning and Brookland. We completed constructionwork on four projects to date. The 2015 plan includesthe activation of six automated restoration schemes.Due to multiple revisions and planning issues, theconstruction and activation of the six automatedrestoration schemes is planned for 2016.

In December, we completed one project to date. Weplanned to complete two projects during 2015, whichwas updated to one feeder due to a modified feeder list.

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