The All-Energy conference, which has just started in Aberdeen, has been held in the Granite City since it began in 2001. But it has been announced that it will move to the SECC in Glasgow next year. The organisers say there will be financial savings in heading to Glasgow and had only taken the decision after careful consideration.
But Aberdeen City Council leader Jenny Laing said: "I am sure that many businesses and research organisations will be extremely disappointed by this news.
"Aberdeen is a global energy hub and the renewables capital of Europe. It is renowned as a skills and knowledge base, as well as for the pioneering projects being carried out here."