What it does
This regulation, the Utilities (General) Regulation 2017, does one discrete, formal thing: it declares that an "embedded network" is an exempt class of utility service for the purposes of the Utilities Act 2000 (reg 3(1)). It accomplishes that by defining the term "embedded network" by reference to the national electricity rules, chapter 10 (Glossary) (reg 3(2)). The regulation also contains a standard drafting note that explanatory notes in the regulation are not part of the law (reg 2), and records its short title (reg 1).
Mechanically, the regulation does not itself set out the legal consequences of the exemption. Instead it triggers the operation of the Utilities Act 2000 provision that authorises the designation of exempt classes, namely s 15A of the Act, by listing the class in subordinate legislation (reg 3 references the Act, s 15A). The precise legal effects of being an "exempt class" therefore depend on the substantive text and operation of s 15A and related provisions of the Utilities Act. The regulation supplies only the class label and the external definition it adopts.
Procedurally the instrument was made as part of the Utilities Legislation Amendment Act 2017 and was taken to have been made under the Utilities Act 2000 (see endnote 3). The republication notes record commencement timing: reg 1 came into force on 7 November 2017, and the remainder was taken to have commenced on 1 December 2017 (endnote 3). The republication states the regulation has not been amended since made.
For practical purposes the key operative text to read in this regulation is reg 3(1) and reg 3(2). Those two short subsections are the entire substantive policy output: a categorical declaration that embedded networks, as defined by the external national electricity rules, form an exempt class of utility service under the Utilities Act framework. All downstream legal and commercial effects flow from that designation and from the referenced external definition.