"The SETI Institute has trained its Allen Telescope Array on this star for more than two weeks. The Array consists of 42 antennas, each 6 meters in size, and is located approximately 500 km north of San Francisco in the Cascade Mountains... [They found nothing]. Analysis of the Array data show no clear evidence for either type of signal between the frequencies of 1 and 10 GHz. This rules out omnidirectional transmitters of approximately 100 times today's total terrestrial energy usage in the case of the narrow-band signals, and ten million times that usage for broad band emissions." Note, only a small portion of "today's total terrestrial energy usage" is used to power radio stations. So this is not exactly a strong finding of anything.