I might be mistaking but this is called Blue Energy. Real world trials are already being build in the Netherlands (finished 2010). KEMA (Dutch institute) has discovered a way make cheap polymer membranes I believe. Dutch source: http://www.energiechannel.nl/nieuws_details.php?nid=44

Having just finished my statistics classes I wonder if the difference is significant and thus not caused by chance. I tried to get the report but cannot find it anywhere to examine this. Does anyone have any insight in the methodology and statistical analysis used?