M&A Deal Summary

Ameren Acquires Illinois Power

On February 4, 2004, Ameren acquired utilities company Illinois Power from Dynegy for 2.3B USD

Acquisition Highlights
  • This is Ameren’s 2nd transaction in the Utilities sector.
  • This is Ameren’s largest (disclosed) transaction.
  • This is Ameren’s 3rd transaction in the United States.
  • This is Ameren’s 3rd transaction in Illinois.

M&A Deal Summary
Date 2004-02-04
Target Illinois Power
Sector Utilities
Buyer(s) Ameren
Sellers(s) Dynegy
Deal Type Divestiture
Deal Value 2.3B USD

Target

Illinois Power

Decatur, Illinois, United States
Illinois Power Co. is an electric power utility.

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Buyer(S) 1

Buyer

Ameren

St. Louis, Missouri, United States

website

Category Company
Founded 1881
Sector Utilities
Employees9,244
Revenue 8.0B USD (2022)
DESCRIPTION
Entrance to Ameren's corporate headquarters in St. Louis, Missouri.
Entrance to Ameren's corporate headquarters in St. Louis, Missouri.

Ameren is a utility holding company. Ameren operates a rate-regulated electric generation, transmission, and distribution business and a rate-regulated natural gas transmission and distribution business in Missouri. Ameren was incorporated in 1881 and is based in St. Louis, Missouri.

DEAL STATS #
Overall 3 of 5
Sector (Utilities) 2 of 2
Type (Divestiture) 2 of 3
State (Illinois) 3 of 4
Country (United States) 3 of 5
Year (2004) 1 of 1
Size (of disclosed) 1 of 2
PREVIOUS DEAL
DATE TARGET DEAL TYPE VALUE
2003-01-01 Central Illinois Light

Peoria, Illinois, United States

Central Illinois Light Co. is a provider of electricity in US.

Buy -
FOLLOWING DEAL
DATE TARGET DEAL TYPE VALUE
2013-03-14 Ameren Energy Resources Company

St. Louis, United States

Ameren Energy Resources (AER) and its subsidiaries Ameren Energy Generating Company (Genco), AmerenEnergy Resources Generating Company (AERG), and Ameren Energy Marketing Company (AEM) include generating capacity in Illinois, and nearly 14,000 MW nationally.

Sell -

Seller(S) 1

SELLER

Dynegy

Houston, Texas, United States

website

Category Company
Founded 1984
Sector Utilities
Employees2,591
Revenue 3.9B USD (2015)
DESCRIPTION
Entrance to Dynegy's corporate headquarters in Houston, Texas.
Entrance to Dynegy's corporate headquarters in Houston, Texas.

Dynegy, Inc. is a provider of wholesale power, capacity and ancillary services to utilities, cooperatives, municipalities, and other energy companies across the US. Dynegy was formed in 1984 and is based in Houston, Texas.

DEAL STATS #
Overall 1 of 3
Sector (Utilities) 1 of 1
Type (Divestiture) 1 of 3
State (Illinois) 1 of 1
Country (United States) 1 of 3
Year (2004) 1 of 1
Size (of disclosed) 2 of 2
FOLLOWING DEAL
DATE TARGET DEAL TYPE VALUE
2005-08-02 Dynegy - Midstream Natural Gas Business

Houston, Texas, United States

Dynegy, Inc. - Midstream Natural Gas Business include approximately 9,300 miles of natural gas gathering pipeline systems and 11 operated gas plants.

Sell $2.4B
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