At midnight Eastern Time, Jan. 1, PJM Interconnection successfully assumed operational control of the transmission systems of Duke Energy Ohio, Inc. and Duke Energy Kentucky, Inc., both subsidiaries of Duke Energy Corporation, and began administering open, competitive wholesale electricity markets in those areas.

With the integrations, PJM's all-time peak demand would have been 163,848 megawatts (MW). PJM now includes 185,600 MW of generating capacity and more than 62,000 miles of transmission lines. The generators in PJM can produce more electricity than Canada and Mexico combined.

Statistics for PJM with the addition of Duke Energy Ohio and Kentucky are in the table below.

Key Statistics

PJM

1993

(PJM Interconnection Association formed)

PJM

as of May 31, 2011

PJM

with ATSI & CPP

PJM

with Duke OH & KY

Millions of people served

22

54

58

60.1

All-time peak demand

46,429

144,644

158,448

163,848

Generating capacity in megawatts

55,575

167,362

180,400

185,600

Miles of transmission lines

6,821

56,750

61,200

62,591

Square miles of territory

48,700

168,500

211,000

214,000