PLC Peak Hours & Defaults

Peak Hours for Capacity Peak Load Contributions

In accordance with the PJM RAA and PJM rules and procedures, BGE will calculate a system capacity peak load contribution (capacity PLC) "ticket" for each electric account on an annual basis. After the end of a summer period, PJM will identify the five highest PJM system coincident load hours that occurred on different days over the period from June 1 to September 30. The local distribution company (LDC)-specific zones will identify the actual zonal loads associated with these five hours. Each LDC-specific zone will reconcile these five different hours back to the one hour weather normalized, system coincident zonal peak load obligation. The consequent peak load contributions will be calculated as an average over these five hours. Each account's PLC will be updated on a yearly basis in accordance with PJM rules and procedures, with supporting data posted on BGE's Web site. The five days and "hour ending" times in 2007 and 2008 used to calculate the year 2008 & 2009 capacity PLCs respectively, are as follows:

2009 Defaults for Capacity Peak Load Contributions

In addition to calculating a system capacity PLC "ticket" for each electric account on an annual basis, BGE also determines an average system capacity PLC for each BGE customer segment. These averages are used as the default system capacity PLC for any electric account that is established with BGE after the five highest system capacity hours have occurred (see above). Each default PLC will be updated on a yearly basis in accordance with PJM rules and procedures and posted on BGE's Web Site. The default system capacity PLCs for 2008 & 2009 by customer segment are as follows:

Peak Hours for Network Transmission Peak Load Contribution

Each local distribution company within PJM has a network transmission service peak load contribution requirement. To allocate fairly the LDC's daily requirement to electricity suppliers, network transmission service peak load contributions (transmission PLCs) are determined. In accordance with the Open Access Transmission Tariff (OATT) and PJM rules and procedures, BGE will calculate a transmission PLC "ticket" for each electric account on an annual basis. For a given year, an account's daily network transmission service PLC requirement is based on its load at the time of the actual unrestricted peak hours that occurred during the twelve months ending October 31 of the prior calendar year. At the end of this 12-month period, PJM and BGE will identify the five highest unrestricted load hours that occurred on different days during this 12-month period. The LDC will reconcile these five different hours back to the highest unrestricted peak load hour that PJM has determined to be BGE's zonal peak load obligation. The consequent peak load contributions will be calculated as an average over these five hours. The five days and "hour ending" times in 2007 and 2008 used to calculate the year 2008 & 2009 network transmission PLCs respectively, are as follows:

2009 Defaults for Transmission Peak Load Contributions

In addition to calculating a transmission PLC "ticket" for each electric account on an annual basis, BGE also determines an average transmission PLC for each BGE customer segment. These averages are used as the default transmission PLC for any electric account that is established with BGE after the five highest transmission hours have occurred (see above). Each default PLC will be updated on a yearly basis in accordance with PJM rules and procedures and posted on BGE's Web Site. The default transmission PLCs for 2009 by customer segment are as follows: