 These payments are made when excess electricity is being generated in a particular region and a grid bottleneck prevents that electricity being exported to a region where the electricity could be used.Wind farm constraint payments reached a record £125 million in 2018, with Scottish wind farms receiving £115 million of this total.There have been critics of REF's agenda, in particular Juliet Davenport, chief executive of green energy provider Good Energy, and Dale Vince, founder of Ecotricity, who both accuse the organisation of using a deliberately "misleading" name.