The Hunterston B AGR Station Site. 2. All installations, facilities, off-site infrastructure, associated infrastructure (whether or not they are on or under the land or are fixed to the land or mobile, and including infrastructure to be built for the purposes of decommissioning), within or relating to the principal nuclear site, including but not limited to: sewage, drainage, effluent discharge, electricity, water, gas, or which form part 2 of an electronic communications network operated by a person, other than the person with control of the principal nuclear site, for as long as such services are needed to supply the principal nuclear site or to provide services to users outside the principal nuclear site. 3.