Status report on the ESS rf power source, with emphasis on the High beta Elliptical cavities. A substantial part of the content is the outcome of the rf power source workshop in Lund 2011-06-13. The main objectives of this workshop was to specify parameters concerning the rf power source for high beta elliptical cavities in order to prepare for prototype procurements. The parameter tables can be found on the ESS ad home page. The focus is entirely on the high beta elliptical part of the power source, due to the high power levels and the large number of units.