The new European standard for smart appliances, called SAREF, has been launched end 2015.
The standard, called SAREF (Smart Appliances REFerence ontology), creates a new reference language for energy-related data. This new language will be used by the devices in the home (from lamps and consumer electronics; etc.) and will allow them to exchange information with any energy management system (which could physically be in the home or in the cloud).
Source: http://ec.europa.eu/digital-agenda/en/blog/new-standard-smart-appliances-smart-home