We own and operate gas and electricity transmission networks in Great Britain and England & Wales respectively and an electricity transmission network in the northeastern US. We also operate the electricity transmission network in Scotland.

Area of operations

We design and maintain National Grid's transmission networks; project manage, construct and commission new assets; and work with the industry and regulators to ensure we have the right returns to carry out our role. In Great Britain, we are the system operator, ensuring reliability of supply to our customers.

57.5 GW and 436 mcm

This year saw a peak electricity demand in Great Britain of 57.5 GW and a peak gas demand of 436 mcm.

£1.3 billion

In 2006/07, we invested over £1.3 billion in our networks to replace ageing assets and to connect new sources of supply.

2006/07 highlights

• Good year for reliability in Great Britain: 100% of gas delivered and 99.9999% of electricity energy delivered.
• 7.5% reduction in lost time injuries across Transmission.
• 8% reduction in cable oil loss in the UK.
• 15% reduction in CO2 emissions in

• We own and operate the electricity transmission system in England and Wales. We operate (but do not own) the two electricity transmission networks in Scotland.
• We own and operate the gas transmission network in Great Britain.We own and operate the UK assets and a portion of the subsea cable of the electricity interconnector between England and France.We also own and operate four liquefied natural gas storage facilities.

• We own and operate an electricity transmission network spanning upstate New York, Massachusetts, Rhode Island, New Hampshire and Vermont. Our US electricity transmission facilities operate at voltages ranging from 69 kV to 345 kV.
• We are the largest electricity transmission service provider in the northeastern US by reference to the length of these high-voltage transmission lines.
  
  
  
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