DS2 announces 400 Mbps electrical standard offering: It can carry 3 HDTV and 2 SDTV streams at the same time. Which is depressing that any household needs five simultaneous TV streams to be happy. Powerline networking for the home has multiple proprietary standards and one industry-supported effort called HomePlug. There's been no coalescing or consolidation, unfortunately. A fair amount of powerline and similar home networking technologies are used for distributing IPTV, rather than used solely for home purposes; that means a service provider tends to provide the equipment, and interoperability isn't an issue.