Private wire systems are localised

electricity grid An electrical grid (or electricity network) is an interconnected network for electricity delivery from producers to consumers. Electrical grids consist of power stations, electrical substations to step voltage up or down, electric power trans ...

s connected to the local distribution networks but linked to privately-owned central plant which produces

electricity Electricity is the set of physical phenomena associated with the presence and motion of matter possessing an electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as described by Maxwel ...

. This enables them to operate a stand-alone supply in the event of the national grid failing, providing localised energy security. The

business case A business case captures the reasoning for initiating a project or task. Many projects, but not all, are initiated by using a business case. It is often presented in a well-structured written document, but may also come in the form of a short ver ...

for private wire supply is driven by the fact that off-grid generation generally avoids network charges and statutory costs.

Ofgem The Office of Gas and Electricity Markets (Ofgem) is the government regulator for the electricity and downstream natural gas markets in Great Britain. It was formed by the merger of the Office of Electricity Regulation (OFFER) and Office of G ...

's "Significant Code Review" in the UK, launched in August 2017, includes private wire supplies within its scope.Coyne, B.
Ofgem consults on major network charges review, small generators, storage and private wires in scope
published 13 March 2017, accessed 26 August 2019

References

Electric power distribution {{electric-power-stub