This Technical Report establishes the general rules for assessing HBES installations, according to its complexity and energy performance. This Technical Report applies to –household HBES installation, from and up to the connection point with the utility (i.e. electricity, telecommunications, tele-service, water, gas, security and similar), –HBES installations that include applications related to automation and integrated control of electrical and/or electronic devices, –the networks used for the HBES interconnection regardless of the transmission media used for their communications, –new HBES installations, retrofitting and enlargement of existing installations.