Wiki the phrase “the point of no return” and you’ll see it has its origins in air navigation, specifically the moment when there is no longer enough fuel to safely turn back the flight. There is only up ahead. No matter what the path.  In 2007, businessman Brian McDonagh decided to build a data centre in Co Wicklow. In partnership with his brothers Kenneth and Maurice McDonagh, he borrowed €21.5 million from Ulster Bank to acquire an 82-acre greenfield site at Kilpedder beside Newtownmountkennedy. Data centres are now ubiquitous and controversial due to their energy requirements – there were more…