** RBC cuts Spain's Acciona ANA.MC to "underperform" from "sector perform", saying it is one of the European utilities most exposed to GDP downturns
** RBC notes Acciona is trading at about 5% premium compared to the market price of its listed parts Acciona Energia ANE.MC and Nordex NDXG.DE
** "We believe the current premium looks excessive to gain exposure to the non-listed concessions business," the broker says
** Acciona is the main shareholder of Acciona Energia and Nordex
** RBC cuts Acciona's PT to 115 euros from 125 euros, while keeping Acciona Energia at "outperform"
** Shares in Acciona are down 2.4% as of 0903 GMT
(Reporting by Javi West Larrañaga)
((javier.west@thomsonreuters.com; +48 58 769 65 76))