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Utility Week ENERGY SUPPLY HANDBOOK 2017 16 ( INDUSTRY INSIDER ) The energy networks are divided into four categories: electricity transmission, electricity distribution, gas transmission and gas distribution. Transmission The transmission networks carry large quantities of gas and electricity across long distances through cables, overhead lines and pipelines. The electricity transmission network carries high voltages of electricity at up to 400kV, which is more than 1,600 times the average domestic supply. Gas is carried at pressures of up to 85 bar; that's 85 times normal air pressure. Distribution If the transmission network is the energy equivalent of a motorway, the distribution network operates like the A and B roads. It takes energy from the wires and pipes of the transmission networks and converts it into lower voltages and pressures so that it can be delivered safely into our homes and businesses. Electricity North West 304 Bridgewater Pl, Birchwood Park, Risley, Warrington WA3 6XG 0800 195 4141 / www.enwl.co.uk Electricity North West owns, operates and maintains the North West's electricity distribution network, connecting 2.4 million properties, and more than 5 million people in the region to the National Grid. It owns one of the original 14 regulated electricity distribution networks in England, Wales and Scotland and is regulated by Ofgem. Its network covers a diverse range of terrain, from isolated farms in rural areas such as Cumbria, to areas of heavy industry and urban populations including Manchester. Chief Executive: Peter Emery ESB Networks Two Gateway, East Wall Road, Dublin 3, D03 A995, Ireland 1850 372 757 / www.esb.ie/contact Electricity Supply Board (ESB) was established in 1927 as a statutory corporation in the Republic of Ireland under the Electricity (Supply) Act 1927. With a holding of 95%, ESB is majority owned by the Irish Government. The remaining 5% is held by the trustees of an Employee Share Ownership Plan. As a strong, diversified, vertically integrated utility, ESB operates right across the electricity market: from generation, through transmission and distribution to supply. In addition, ESB extracts further value at certain points along this chain: supplying gas, using our networks to carry fibre for telecommunications, developing electric vehicle public charging infrastructure and more. Chief Executive: Pat O'Doherty GTC Energy House, Woolpit Business Park, Bury St Edmunds, Suffolk, IP30 9UP 01359 240363 / www.gtc-uk.co.uk GTC is an independent utility infrastructure and networks provider. Established in 1995, the company provides utility solutions to national house builders and developers, regional builders, consultants, landowners and land developers, offering an alternative to the local regional monopoly network. Chief Executive: Clive Linsdell Northern Ireland Electricity Networks 120 Malone Road, Belfast, BT9 5HT 028 9066 1100 / www.nienetworks.co.uk Northern Ireland Electricity Networks (NIE Networks) owns the electricity transmission and distribution network and operates the electricity distribution network which transports electricity to over 860,000 customers in the region. Chief Executive: Nicholas Tarrant (managing director) Northern Power Grid Northern Powergrid Holdings Company Lloyds Court, 78 Grey Street, Newcastle upon Tyne NE1 6AF 0800 011 3332 / www.northernpowergrid.com ENERGY NETWORKS ELECTRICITY