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National Grid (NG) Standards

Improve safe operations of electricity transmission systems

With global headquarters in London, United Kingdom and US operations headquartered in Waltham, MA, United States, National Grid provides Electricity Transmission engineering specifications, procedures and policies, available in hard copy or PDF for providing safe and reliable design and construction of electrical installations.

As the owner and operator of the high voltage (HV) electricity transmission network in England and Wales, National Grid’s HV electricity transmission network is founded upon a wealth of experience. Some of the world’s leading engineers have developed these technical documents – documents that forge the foundation of how our networks operate.

National Grid technical documents help you:

  • Improve safety and reliability of Substations, Cables, Overhead lines, Interconnectors and Safety Procedures
  • Ensure interoperability for electricity transmission systems operating between 132kV and 400kV
  • Mitigate risks of electricity transmission system failures

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