CEO of German energy supplier E.ON, Wulf Bernotat stands on a platform at the new offshore wind energy park Alpha Ventus in the North Sea, about 45 kilometres (27 miles) north of the island of Borkum, April 27, 2010. The Alpha Ventus wind farm with 12 '5-Megawatt-class' wind energy mills, starts its production on Tuesday. REUTERS/Ingo Wagner/Pool (GERMANY - Tags: ENERGY ENVIRONMENT HEADSHOT) 

CEO of German energy supplier E.ON, Wulf Bernotat (R) and German Environment Minister Norbert Roettgen stand on a platform at the new offshore wind energy park Alpha Ventus in the North Sea, about 45 kilometres (27 miles) north of the island of Borkum, April 27, 2010. The Alpha Ventus wind farm with 12 '5-Megawatt-class' wind energy mills, starts its production on Tuesday. REUTERS/Ingo Wagner/Pool (GERMANY - Tags: ENERGY ENVIRONMENT) 

CEO of German energy supplier E.ON CEO, Wulf Bernotat, German Environment Minister Norbert Roettgen, Werner Brinker, CEO of German energy supplier EWE and the head od Vattenfall Europe Tuomo Hatakka press the symbolic green button on a platform at the new offshore wind energy park Alpha Ventus in the North Sea, about 45 kilometres (27 miles) north of the island of Borkum, April 27, 2010. The Alpha Ventus wind farm with 12 '5-Megawatt-class' wind energy mills, starts its production on Tuesday. REUTERS/Ingo Wagner/Pool (GERMANY - Tags: ENERGY ENVIRONMENT) 

CEO of German energy supplier E.ON CEO, Wulf Bernotat, German Environment Minister Norbert Roettgen, Werner Brinker, CEO of German energy supplier EWE and the head od Vattenfall Europe Tuomo Hatakka press the symbolic green button on a platform at the new offshore wind energy park Alpha Ventus in the North Sea, about 45 kilometres (27 miles) north of the island of Borkum, April 27, 2010. The Alpha Ventus wind farm with 12 '5-Megawatt-class' wind energy mills, starts its production on Tuesday. REUTERS/Ingo Wagner/Pool (GERMANY - Tags: ENERGY ENVIRONMENT) 

CEO of German energy supplier E.ON CEO, Wulf Bernotat, German Environment Minister Norbert Roettgen, Werner Brinker, CEO of German energy supplier EWE and the head od Vattenfall Europe Tuomo Hatakka press the symbolic green button on a platform at the new offshore wind energy park Alpha Ventus in the North Sea, about 45 kilometres (27 miles) north of the island of Borkum, April 27, 2010. The Alpha Ventus wind farm with 12 '5-Megawatt-class' wind energy mills, starts its production on Tuesday. REUTERS/Ingo Wagner/Pool (GERMANY - Tags: ENERGY ENVIRONMENT) 

CEO of German energy supplier E.ON CEO, Wulf Bernotat, German Environment Minister Norbert Roettgen, Werner Brinker, CEO of German energy supplier EWE and the head od Vattenfall Europe Tuomo Hatakka press the symbolic green button on a platform at the new offshore wind energy park Alpha Ventus in the North Sea, about 45 kilometres (27 miles) north of the island of Borkum, April 27, 2010. The Alpha Ventus wind farm with 12 '5-Megawatt-class' wind energy mills, starts its production on Tuesday. REUTERS/Ingo Wagner/Pool (GERMANY - Tags: ENERGY ENVIRONMENT) 

Wulf Bernotat, chief executive of the German utility giant E.ON is pictured during the annual news conference in Duesseldorf, March 10, 2010. Germany's E.ON, the world's largest utility by sales, joined rivals such as GDF Suez and gave a more cautious outlook on 2010 earnings as the financial crisis hits prices and demand. REUTERS/Kirsten Neumann (GERMANY - Tags: BUSINESS) 

Wulf Bernotat (R), chief executive of the German utility giant E.ON is pictured with his successor Johannes Teyssen after the annual news conference in Duesseldorf, March 10, 2010. Germany's E.ON, the world's largest utility by sales, joined rivals such as GDF Suez and gave a more cautious outlook on 2010 earnings as the financial crisis hits prices and demand. REUTERS/Kirsten Neumann (GERMANY - Tags: BUSINESS) 

Wulf Bernotat, chief executive of the German utility giant E.ON poses next to a natural gas-powered car after the annual news conference of E.ON in Duesseldorf March 10, 2010. Germany's E.ON, the world's largest utility by sales, joined rivals such as GDF Suez and gave a more cautious outlook on 2010 earnings as the financial crisis hits prices and demand. REUTERS/Kirsten Neumann (GERMANY - Tags: BUSINESS) 

Johannes Teyssen is pictured before the annual news conference of the German utility giant E.ON in Duesseldorf March 10, 2010. Theyssen is due to replace Wulf Bernotat as chief executive of E.ON in May 2010. REUTERS/Kirsten Neumann (GERMANY - Tags: BUSINESS) 

Johannes Teyssen poses on a scooter after the annual news conference of the German utility giant E.ON in Duesseldorf March 10, 2010. Theyssen is due to replace Wulf Bernotat as chief executive of E.ON in May 2010. REUTERS/Kirsten Neumann (GERMANY - Tags: BUSINESS) 

Johannes Teyssen poses next to a natural gas-powered car after the annual news conference of the German utility giant E.ON in Duesseldorf March 10, 2010. Theyssen is due to replace Wulf Bernotat as chief executive of E.ON in May 2010. REUTERS/Kirsten Neumann (GERMANY - Tags: BUSINESS) 

Wulf Bernotat (R), chief executive of the German utility giant E.ON is pictured with his successor Johannes Teyssen during the annual news conference in Duesseldorf, March 10, 2010. Germany's E.ON, the world's largest utility by sales, joined rivals such as GDF Suez and gave a more cautious outlook on 2010 earnings as the financial crisis hits prices and demand. REUTERS/Kirsten Neumann (GERMANY - Tags: BUSINESS) 

Wulf Bernotat (R), chief executive of the German utility giant E.ON is pictured with his successor Johannes Teyssen during the annual news conference in Duesseldorf, March 10, 2010. Germany's E.ON, the world's largest utility by sales, joined rivals such as GDF Suez and gave a more cautious outlook on 2010 earnings as the financial crisis hits prices and demand. REUTERS/Kirsten Neumann (GERMANY - Tags: BUSINESS) 

Wulf Bernotat (R), chief executive of the German utility giant E.ON is pictured with his successor Johannes Teyssen during the annual news conference in Duesseldorf, March 10, 2010. Germany's E.ON, the world's largest utility by sales, joined rivals such as GDF Suez and gave a more cautious outlook on 2010 earnings as the financial crisis hits prices and demand. REUTERS/Kirsten Neumann (GERMANY - Tags: BUSINESS) 

Wulf Bernotat, chief executive of the German utility giant E.ON is pictured before the annual news conference in Duesseldorf, March 10, 2010. Germany's E.ON, the world's largest utility by sales, joined rivals such as GDF Suez and gave a more cautious outlook on 2010 earnings as the financial crisis hits prices and demand. REUTERS/Kirsten Neumann (GERMANY - Tags: BUSINESS) 

Wulf Bernotat, chief executive of the German utility giant E.ON is pictured before the annual news conference in Duesseldorf, March 10, 2010. Germany's E.ON, the world's largest utility by sales, joined rivals such as GDF Suez and gave a more cautious outlook on 2010 earnings as the financial crisis hits prices and demand. REUTERS/Kirsten Neumann (GERMANY - Tags: BUSINESS) 

Wulf Bernotat, chief executive of the German utility giant E.ON is pictured before the annual news conference in Duesseldorf, March 10, 2010. Germany's E.ON, the world's largest utility by sales, joined rivals such as GDF Suez and gave a more cautious outlook on 2010 earnings as the financial crisis hits prices and demand. REUTERS/Kirsten Neumann (GERMANY - Tags: BUSINESS) 

Wulf Bernotat, chief executive of the German utility giant E.ON is pictured before the annual news conference in Duesseldorf, March 10, 2010. Germany's E.ON, the world's largest utility by sales, joined rivals such as GDF Suez and gave a more cautious outlook on 2010 earnings as the financial crisis hits prices and demand. REUTERS/Kirsten Neumann (GERMANY - Tags: BUSINESS) 

Wulf Bernotat, chief executive of the German utility giant E.ON is pictured before the annual news conference in Duesseldorf, March 10, 2010. Germany's E.ON, the world's largest utility by sales, joined rivals such as GDF Suez and gave a more cautious outlook on 2010 earnings as the financial crisis hits prices and demand. REUTERS/Kirsten Neumann (GERMANY - Tags: BUSINESS) 

Wulf Bernotat, CEO of German power utility E.ON, smokes a cigarette before celebrations marking the 50th anniversary of the German Atomic Forum (DAtF) in Berlin July 1, 2009. REUTERS/Tobias Schwarz (GERMANY POLITICS ENERGY) 

Wulf Bernotat, CEO of German power utility E.ON poses during the general meeting in Essen May 6, 2009. REUTERS/Ina Fassbender (GERMANY BUSINESS) 

Wulf Bernotat, CEO of German power utility E.ON poses during the general meeting in Essen May 6, 2009. REUTERS/Ina Fassbender (GERMANY BUSINESS) 

Wulf Bernotat (L), CEO of German power utility E.ON and Supervisory Board Ulrich Hartmann pose during the general meeting in Essen May 6, 2009. REUTERS/Ina Fassbender (GERMANY BUSINESS) 

Wulf Bernotat (L), CEO of German power utility E.ON and Supervisory Board Ulrich Hartmann pose during the general meeting in Essen May 6, 2009. REUTERS/Ina Fassbender (GERMANY BUSINESS) 

Wulf Bernotat (L), CEO of German power utility E.ON and Supervisory Board Ulrich Hartmann pose during the general meeting in Essen May 6, 2009. REUTERS/Ina Fassbender (GERMANY BUSINESS) 

Wulf Bernotat, CEO of German power utility E.ON attends the general meeting in Essen May 6, 2009. REUTERS/Ina Fassbender (GERMANY BUSINESS) 

Wulf Bernotat, CEO of German power utility E.ON attends the general meeting in Essen May 6, 2009. REUTERS/Ina Fassbender (GERMANY BUSINESS) 

Wulf Bernotat, CEO of German power utility E.ON attends the general meeting in Essen May 6, 2009. REUTERS/Ina Fassbender (GERMANY BUSINESS) 

Wulf Bernotat, CEO of German power utility E.ON makes a speech during the general meeting in Essen May 6, 2009. REUTERS/Ina Fassbender (GERMANY BUSINESS) 

Wulf Bernotat, CEO of German power utility E.ON makes a speech during the general meeting in Essen May 6, 2009. REUTERS/Ina Fassbender (GERMANY BUSINESS) 

Wulf Bernotat, CEO of German power utility E.ON makes a speech during the general meeting in Essen May 6, 2009. REUTERS/Ina Fassbender (GERMANY BUSINESS) 

Wulf Bernotat, chief executive of the German utility giant E.ON addresses the company's annual news conference in Duesseldorf March 10, 2009. A disappointing outlook from Germany?s E.ON further undermined utilities' shaky status as safe haven investments and sent its shares down more than 10 percent on Tuesday. REUTERS/Ina Fassbender (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON poses for photographers before the company's annual news conference in Duesseldorf March 10, 2009. A disappointing outlook from Germany?s E.ON further undermined utilities' shaky status as safe haven investments and sent its shares down more than 10 percent on Tuesday. REUTERS/Ina Fassbender (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON poses for photographers before the company's annual news conference in Duesseldorf March 10, 2009. A disappointing outlook from Germany?s E.ON further undermined utilities' shaky status as safe haven investments and sent its shares down more than 10 percent on Tuesday. REUTERS/Ina Fassbender (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON poses for photographers before the company's annual news conference in Duesseldorf March 10, 2009. A disappointing outlook from Germany?s E.ON further undermined utilities' shaky status as safe haven investments and sent its shares down more than 10 percent on Tuesday. REUTERS/Ina Fassbender (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON looks through his glasses during the company's annual news conference in Duesseldorf March 10, 2009. A disappointing outlook from Germany?s E.ON further undermined utilities' shaky status as safe haven investments and sent its shares down more than 10 percent on Tuesday. REUTERS/Ina Fassbender (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON waits for the company's annual news conference to start in Duesseldorf March 10, 2009. A disappointing outlook from Germany?s E.ON further undermined utilities' shaky status as safe haven investments and sent its shares down more than 10 percent on Tuesday. REUTERS/Ina Fassbender (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON smiles during the company's annual news conference in Duesseldorf March 10, 2009. A disappointing outlook from Germany?s E.ON further undermined utilities' shaky status as safe haven investments and sent its shares down more than 10 percent on Tuesday. REUTERS/Ina Fassbender (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON poses for photographers before the company's annual news conference in Duesseldorf March 10, 2009. A disappointing outlook from Germany?s E.ON further undermined utilities' shaky status as safe haven investments and sent its shares down more than 10 percent on Tuesday. REUTERS/Ina Fassbender (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON arrives for the company's annual news conference in Duesseldorf March 10, 2009. A disappointing outlook from Germany?s E.ON further undermined utilities' shaky status as safe haven investments and sent its shares down more than 10 percent on Tuesday. REUTERS/Ina Fassbender (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON poses for photographers before the company's annual news conference in Duesseldorf March 10, 2009. A disappointing outlook from Germany?s E.ON further undermined utilities' shaky status as safe haven investments and sent its shares down more than 10 percent on Tuesday. REUTERS/Ina Fassbender (GERMANY) 

Wulf Bernotat, CEO of the German utility giant E.O.N addresses the annual shareholders meeting in the Grugahalle in Essen, April 30, 2008. REUTERS/Kirsten Neumann (GERMANY) 

Wulf Bernotat (L), CEO of the German utility giant E.O.N and Ulrich Hartmann, Chairman of the E.ON supervisory board attend the annual shareholders meeting in the Grugahalle in Essen, April 30, 2008. REUTERS/Kirsten Neumann (GERMANY) 

Wulf Bernotat, CEO of the German utility giant E.O.N attends the annual shareholders meeting in the Grugahalle in Essen, April 30, 2008. REUTERS/Kirsten Neumann (GERMANY) 

Wulf Bernotat, CEO of the German utility giant E.O.N gestures during the annual shareholders meeting in the Grugahalle in Essen, April 30, 2008. REUTERS/Kirsten Neumann (GERMANY) 

Wulf Bernotat, CEO of the German utility giant E.O.N gestures during the annual shareholders meeting in the Grugahalle in Essen, April 30, 2008. REUTERS/Kirsten Neumann (GERMANY) 

Wulf Bernotat, CEO of the German utility giant E.O.N gestures during the annual shareholders meeting in the Grugahalle in Essen, April 30, 2008. REUTERS/Kirsten Neumann (GERMANY) 

The board of German utility giant E.ON, including chief executive Wulf Bernotat (3rd L) attends the annual press conference in Duesseldorf March 6, 2008. Germany's Federal Cartel Office on Wednesday opened legal proceedings against 35 companies it suspects of charging inflated gas prices, a further regulatory swoop to break the power of utility groups. The Bonn-based authority said in a statement it had Germany's four biggest power groups in its sights. It is probing companies belonging to E.ON, RWE, EnBW and Vattenfall Europe.
REUTERS/Kirsten Neumann (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON attends the annual press conference in Duesseldorf March 6, 2008. Germany's Federal Cartel Office on Wednesday opened legal proceedings against 35 companies it suspects of charging inflated gas prices, a further regulatory swoop to break the power of utility groups. The Bonn-based authority said in a statement it had Germany's four biggest power groups in its sights. It is probing companies belonging to E.ON, RWE, EnBW and Vattenfall Europe.
REUTERS/Kirsten Neumann (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON smiles during the annual press conference in Duesseldorf March 6, 2008. Germany's Federal Cartel Office on Wednesday opened legal proceedings against 35 companies it suspects of charging inflated gas prices, a further regulatory swoop to break the power of utility groups. The Bonn-based authority said in a statement it had Germany's four biggest power groups in its sights. It is probing companies belonging to E.ON, RWE, EnBW and Vattenfall Europe.
REUTERS/Kirsten Neumann (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON smiles during the annual press conference in Duesseldorf March 6, 2008. Germany's Federal Cartel Office on Wednesday opened legal proceedings against 35 companies it suspects of charging inflated gas prices, a further regulatory swoop to break the power of utility groups. The Bonn-based authority said in a statement it had Germany's four biggest power groups in its sights. It is probing companies belonging to E.ON, RWE, EnBW and Vattenfall Europe.
REUTERS/Kirsten Neumann (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON smiles during the annual press conference in Duesseldorf March 6, 2008. Germany's Federal Cartel Office on Wednesday opened legal proceedings against 35 companies it suspects of charging inflated gas prices, a further regulatory swoop to break the power of utility groups. The Bonn-based authority said in a statement it had Germany's four biggest power groups in its sights. It is probing companies belonging to E.ON, RWE, EnBW and Vattenfall Europe.
REUTERS/Kirsten Neumann (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON attends the annual press conference in Duesseldorf March 6, 2008. Germany's Federal Cartel Office on Wednesday opened legal proceedings against 35 companies it suspects of charging inflated gas prices, a further regulatory swoop to break the power of utility groups. The Bonn-based authority said in a statement it had Germany's four biggest power groups in its sights. It is probing companies belonging to E.ON, RWE, EnBW and Vattenfall Europe.
REUTERS/Kirsten Neumann (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON attens the annual press conference in Duesseldorf March 6, 2008. Germany's Federal Cartel Office on Wednesday opened legal proceedings against 35 companies it suspects of charging inflated gas prices, a further regulatory swoop to break the power of utility groups. The Bonn-based authority said in a statement it had Germany's four biggest power groups in its sights. It is probing companies belonging to E.ON, RWE, EnBW and Vattenfall Europe.
REUTERS/Kirsten Neumann (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON gestures during the annual press conference in Duesseldorf March 6, 2008. Germany's Federal Cartel Office on Wednesday opened legal proceedings against 35 companies it suspects of charging inflated gas prices, a further regulatory swoop to break the power of utility groups. The Bonn-based authority said in a statement it had Germany's four biggest power groups in its sights. It is probing companies belonging to E.ON, RWE, EnBW and Vattenfall Europe.
REUTERS/Kirsten Neumann (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON gestures during the annual press conference in Duesseldorf March 6, 2008. Germany's Federal Cartel Office on Wednesday opened legal proceedings against 35 companies it suspects of charging inflated gas prices, a further regulatory swoop to break the power of utility groups. The Bonn-based authority said in a statement it had Germany's four biggest power groups in its sights. It is probing companies belonging to E.ON, RWE, EnBW and Vattenfall Europe.
REUTERS/Kirsten Neumann (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON attens the annual press conference in Duesseldorf March 6, 2008. Germany's Federal Cartel Office on Wednesday opened legal proceedings against 35 companies it suspects of charging inflated gas prices, a further regulatory swoop to break the power of utility groups. The Bonn-based authority said in a statement it had Germany's four biggest power groups in its sights. It is probing companies belonging to E.ON, RWE, EnBW and Vattenfall Europe.
REUTERS/Kirsten Neumann (GERMANY) 

Wulf Bernotat, chief executive of the German utility giant E.ON, drinks a glass of water after a news conference in Madrid in this April 3, 2007 file photo. Germany's Federal Cartel Office March 5, 2008, opened legal proceedings against 35 companies it suspects of charging inflated gas prices, a further regulatory swoop to break the power of utility groups. The Bonn-based authority said in a statement it had Germany's four biggest power groups in its sights. It is probing companies belonging to E.ON, RWE, EnBW and Vattenfall Europe. REUTERS/Susana Vera (SPAIN) 

German Chancellor Angela Merkel poses with Wulf Bernotat, chief executive of German utility giant E.ON, during the German-Russian governmental consultations St. Petersburg Dialogue in Wiesbaden October 15, 2007. REUTERS/Alex Grimm (GERMANY)