We are looking for early feedback about our new website.

Our history

National Grid, like most companies of our size, has a long history. We’ve listed some of our main milestones below, although our full history goes back much further than this.

2017 National Grid sold a 61% interest in its UK Gas Distribution business 

2016 National Grid separated its UK Gas Distribution business 

2012 New Hampshire electricity and gas distribution businesses sold 

2010 Rights issue raised £3.2 billion 

2008 Ravenswood generation station sold 

2007 UK/ US wireless infrastructure operations and Basslink electricity interconnector in Australia sold 

2007 KeySpan Corporation acquired 

2006 Rhode Island gas distribution network acquired 

2005 Four UK regional gas distribution networks sold and National Grid adopted as our name 

2004 UK wireless infrastructure network acquired from Crown Castle International Corp 

2002 Niagara Mohawk Power Corporation merged with National Grid in US

2002 National Grid and Lattice Group merged to form National Grid Transco 

2000 Lattice Group demerged from BG and listed separately 

2000 New England Electric System and Eastern Utilities Associates acquired 

1997 Centrica demerged from BG 

1997 Energis demerged from National Grid 

1995 National Grid listed on the London Stock Exchange 

1990 Electricity transmission network in England/ Wales transferred to National Grid on privatisation 

1986 British Gas (BG) privatisation 

    National Grid in the U.S. owns and operates the following historical utilities:

    In Massachusetts:  

    • Massachusetts Electric Company  
    • Nantucket Electric Company 
    • Boston Gas Company  
    • Colonial Gas Company 

    In Rhode Island: 

    • Narragansett Electric Company 

    In New York: 

    • Niagara Mohawk Power Corporation  
    • Brooklyn Union Gas Company  
    • Keyspan Gas East Corporation 

    In New England:  

    • New England Power Company 

    Vision and strategy

    Discover our vision and strategic priorities.

    Find out more

    What we do

    What we do in the UK, the US and in National Grid Ventures.

    Find out more