ISTANBUL (Turkey), January 9 (SeeNews) – As many as 40 mergers and acquisitions (M&A) valued at $5.6 billion (4.7 billion euro) were realised in the Turkish energy sector in 2014, remaining flat year-on-year in terms of deal numbers but down 21% in terms of value, the Turkish arm of global consultancy firm PricewaterhouseCoopers (PwC) said.