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Independent Networks Association

Leading cross industry collaboration

Utility sectors working together

For the first time, INA membership has brought together IDNOs, IGTs and NAVs to influence and shape our energy and water futures.

About IDNOs

Independent Distribution Network Operators (IDNOs) design, develop, operate and maintain local electricity distribution networks, constructed by Independent Connections Providers (ICPs), under a licence granted by Ofgem.

  • IDNO networks are directly connected to the Distribution Network Operator (DNO) networks or indirectly to the DNO via another IDNO
  • Unlike the DNOs, that cover 14 geographical areas in the country, IDNOs are not restricted to a geographical region and can operate across the UK.

About IGTs

  • Independent Gas Transporters (IGTs) design, develop, operate and maintain local gas transportation networks, constructed by Utility Infrastructure Providers (UIPs), under a licence granted by Ofgem
  • IGT networks are directly connected to the Gas Distribution Network (GDN) or indirectly to the GDN via another IGT
  • IGTs design and construct gas infrastructure and retain ownership of the networks. The license also enables IGTs to adopt newly built networks, designed and built by third parties
  • Unlike the GDNs, which operate in distinct geographies, IGTs can operate across the UK.

About NAVs

  • New Appointments and Variations (NAVs) design, develop, operate and maintain local water and wastewater networks for the benefit of those customers connected to them, under a licence granted by Ofwat.
  • They generally provide water and wastewater to new housing estates, serving homes and some smaller businesses and apply to provide this on a site by site basis.  All customers have guaranteed standards of service.
  • They will compete to provide the ‘last mile’ water and wastewater services, alongside other utility infrastructure, such as gas and electricity networks.
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