2009 Report - Pennsylvania Public Utility Commission

Duquesne's summer peak load, occurring on June 9, 2008, was 2,822
megawatts (MW), representing a decrease of 3.3 percent from last year's peak of
2,890 MW. The 2007-08 winter peak load was 2,245 MW or 5.1 percent higher
than that of the previous year.
The actual average annual peak load growth rate over the past 15 years
was 0.8 percent. Duquesne’s forecast shows the peak load increasing from 2,822
MW in the summer of 2008 to 2,890 MW in 2013, or an average annual growth
rate of 0.5 percent. The current forecast for 2009 is 4.8 percent below the
previous forecast, filed in 2008. See Figure 2.5.
3,100
3,050
3,000
2,950
Figure 2.5 Duquesne Light Company
Historic & Forecast Peak Load
Megawatts
2,900
2,850
2,800
2,750
2,700
2,650
2,600
2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
Tables 2.4-2.7 provide Duquesne’s forecasts of peak load and residential,
commercial and industrial energy demand from 1999 through 2009.
Currently, PJM manages the flow of wholesale electricity for Duquesne.
Duquesne’s integration into PJM involved transferring control of 670 miles of highvoltage
transmission lines; however, ownership has remained with Duquesne.
PJM is the regional reliability coordinator for Duquesne.
For Calendar Year 2008, 13 electric generation suppliers (EGSs) and one
municipality sold a total of 8.1 billion KWH to retail customers in Duquesne’s
service territory, or about 58.6 percent of total consumption. There were no
instances in 2008 where EGSs failed to supply scheduled load. Since joining PJM
Electric Power Outlook for Pennsylvania 2008-2013 23