PJM Interconnection has announced that at 1 a.m. (EDT) PJM assumed operational control of the transmission systems of American Transmission Systems, Inc. and Cleveland Public Power and began administering open, competitive wholesale electricity markets in those areas. ATSI is the transmission affiliate of FirstEnergy. CPP is the municipal utility of the city of Cleveland.

The integration included the following FirstEnergy utilities, Toledo Edison, Ohio Edison, Cleveland Electric Illuminating and Penn Power. All of FirstEnergy's utilities are now in PJM.

With the integrations, PJM's all-time peak demand would have been 158,448 MW. PJM now includes 180,400 MW of generating capacity and more than 61,000 miles of transmission lines.

"PJM believes the consolidation of FirstEnergy's RTO membership will further enhance the reliability and competitive electricity markets of the region," said Terry Boston, president and chief executive officer of PJM. "PJM's markets support the development of renewable resources, energy efficiency and demand response, which aligns with the policies of the states of Pennsylvania and Ohio."

Statistics for PJM with the addition of ATSI and CPP are in the table below.


Key Statistics

PJM

1993

(PJM Interconnection Association formed)

PJM

as of May 31, 2011

PJM

with ATSI and CPP

Millions of people served

22

54

58

All-time peak demand

46, 429

144,644

158,448

Generating capacity in megawatts

55,575

167,362

180,400

Miles of transmission lines

6,821

56,750

61,200

Square miles of territory

48,700

168,500

211,000