Siemens Energy shares jump 13% after guidance raise and leadership change at embattled wind turbine unit

Siemens Energy shares soared as much as 13% on Wednesday after the German renewables firm raised its forecast for the year and announced that the CEO of its troubled wind turbine unit will be replaced amid "comprehensive restructuring measures."

It said in a statement that Jochen Eickholt at Siemens Gamesa informed the board that he will step down from his position as CEO by mutual agreement on July 31, and be succeeded by Vinod Philip.

"In a very difficult situation at Siemens Gamesa, Jochen laid the central foundations for the urgently needed reorganization and new start within Siemens Energy. It is only fair to emphasize that the causes of the quality problems did not fall under his tenure as CEO," said Siemens Energy CEO Christian Bruch in a statement. 

It said that Gamesa had initiated comprehensive restructuring measures and "steps for long-term strategic development" in order to boost operating margins.

Strong demand for power grid equipment amid the company's "success" in stabilizing the wind business led Siemens on Wednesday to raise its forecast for the year.

For the full year, the company now expects a comparable revenue growth between 10% and 12% and a profit margin before special items between negative 1% and positive 1%. It previously forecast comparable revenue growth between 3% and 7% and a profit margin before special items between negative 2% and positive 1%.

Shares of Siemens Energy traded 11.3% higher at around 9:45 a.m. London time.

Speaking to CNBC's "Squawk Box Europe" on Wednesday, CEO Bruch said Siemens Energy had enjoyed a "good quarter," citing "very positive" order momentum in energy. However, he warned the company still needed to work through some quality issues.

"We are tackling the things in wind.