Norweb PLC, originally the North West Electricity Board, was a British electricity supply and distribution company. It supplied electricity to about 4.7 million industrial, commercial and domestic customers in the North West of England. The Board was originally formed in 1948 as part of the nationalisation of the electricity industry by the Electricity Act 1947. The assets of the Board passed to Norweb plc in 1990, which was privatised in a stock market flotation later in the same year.
Norweb plc was acquired by North West Water plc in 1995 for £1.83 billion. The combined water and electricity companies became United Utilities (UU). The customer base for the electricity supply arm was subsequently sold off in 2000 to TXU as Norweb Energi. TXU was itself acquired by Powergen in 2002. The value electrical retailing arm "Norweb Retail" was sold to the Kingfisher Group in November 1996 for 51 million pounds; seeing the closure of the Bolton head office, the CAS distribution centre in Worsley, the flagship Coventry 285, 57 high street stores and half of its out-of-town superstores. Remaining stores were rebranded under the Comet name.
UU retained the remainder of the company, including the distribution network in the northwest of England, as Norweb Distribution. In 2001 Norweb was renamed United Utilities Electricity. The company was the licensed Distribution Network Operator for the north west England until its sale in December 2007 to North West Electricity Networks, a joint venture between Colonial First State, which is part of the Commonwealth Bank of Australia, and US investment bank JP Morgan. Electricity North West Limited became the licensed Distribution Network Operator for the north west of England as a consequence of the sale.