| EA |
The Environment Agency; The regulator for the environment, including rivers and waste disposal |
| [EA] |
Electricity Association; a trade association representing the ESI, which was disbanded in September 2003, its primary activities having been transferred to the AEP, and the new ENA and ERA |
| EEC |
Energy Efficiency Commitment whereby companies can be rewarded for obtaining agreed improvements in energy efficiency |
| EfW |
Energy from waste |
| EI |
The Energy Institute |
| Elexon |
The company that administers the Balancing and Settlement Code |
| Embedded generation |
See distributed generation |
| Embedded benefits |
Commercial benefits arising from generation connected to distribution networks, e.g. the avoidance of BSUoS, TNUoS, BSC charges, transmission losses and Residual Cashflow Reallocation |
| ENA |
Electricity Networks Association; trade association representing electricity and gas transmission and distribution network operators, formed following the disbanding of the EA |
| EPBD |
Energy Performance of Buildings Directive |
| EPSRC |
The Engineering and Physical Sciences Research Council |
| Energy efficiency |
The amount of useful output achieved for each unit of input energy. Energy efficiency can be improved by reducing wastage both in the equipment and its use |
| Energy mix |
The distribution of different energy sources within the total supply |
| ERA |
Electricity Retail Association; trade association representing suppliers formed following the disbanding of the EA |
| ERD |
European Renewables Directive |
| ESQCR |
Electricity Safety Quality and Continuity Regulations 2002; The statutory instrument in relation to the distribution of electricity |
| ESI |
Electricity Supply Industry |
| EST |
The Energy Savings Trust; a Government organisation to promote energy efficiency to domestic, business, local government and trade sectors |
| ETG |
The Emissions Trading Group; a body advising the UK Government on the implementation of the EU ETS, and its inter-relationships with UK ETS, CCAs and other measures |
| ETSU |
The Energy Technology Support Unit formerly of the DTI, now the privatised Future Energy Solutions |
| EU ETS |
The Emissions Trading Scheme of the European Union, due to be introduced in the UK in about 2005 |
| Externalities |
The external impacts associated with power generation, but not traditionally costed into the energy price |
| G(number) |
Engineering recommendation documents, published by ENA |
| Generation |
The energy output of a generating plant over a period of time |
| GEMA |
Gas and Electricity Markets Authority; regulatory part of Ofgem |
| GJ |
Gigajoule (one thousand MJ) |
| GO; GoO |
Guarantee of Origin |
| Greenhouse gases; GHG |
Gases whose emission contributes to climate change; The Kyoto Protocol identifies these as Carbon dioxide, Methane, Nitrous oxide, Hydrofluorocarbons, Perfluorocarbons and Sulphur hexafluoride |
| Green smear-back |
See buy-out fund recycling |
| GRC |
Gross Registered Capacity |
| Grid Code |
The code of practice, which covers all major technical aspects relating to connections to, and the operation and use of, the transmission system |
| GW; GW(e); GW(th); GWh |
Gigawatts, Gigawatt-hours electricity, Gigawatt-hours thermal |
| HFCs |
Hydrofluorocarbons |
| HMSO |
Her Majesty’s Stationery Office |
| ICW |
Industrial and Commercial Waste |
| IEMD |
Internal Electricity Market Directive |
| IFI |
Innovation Funding Incentive – a mechanism to encourage DNOs to invest in appropriate R&D activities |
| I Mech E |
The Institution of Mechanical Engineers |
| Intermittency |
The non-continuous nature of some forms of energy generation, e.g. wind power, solar, hydro, wave and tidal |
| ISG |
Implementation Steering Group for the Structure of Electricity Distribution Charges |
| J |
Joule |
| kJ |
Kilojoule (one thousand Joules) |
| Ktoe |
Thousand tonnes of oil equivalent |
| kVA |
One thousand volt-amps; similar to one kW |
| kW; kWh |
Kilowatts; kilowatt hours |
| LCPD |
Large Combustion Plant Directive |
| LEC |
(Climate change) Levy Exemption Certificate |
| LEG |
Licence Exempt Generator; an electricity generator too small (<100MW) to be required to hold a generation licence |
| Load factor |
See capacity factor |
| LZC |
Low and zero carbon (as applied to energy and energy conservation measures) |
| MJ |
Megajoule (one thousand kJ) |
| MO; MOA |
Meter Operator (Agent); responsible for installation, safety and maintenance of metering equipment on behalf of the electricity supplier/meter registrant |
| MPAN |
Metering Point Administration Number; The registration number of a metering point used in electricity settlement |
| MRA |
Master Registration Agreement; The multilateral framework agreement for the retail (SVA) level procedures of registration and transfer |
| MSW |
Municipal Solid Waste |
| Mtoe |
Million tonnes of oil equivalent |
| MW; MW(e); MW(th); MWh |
Megawatts |
| Megawatt-hours |
| NAP |
National Allocation Plan for the level of emissions permitted under the EU ETS |
| NETA |
The New Electricity Trading Arrangements; introduced in March 2001 for England and Wales and governed by the BSC |
| NFFO |
Non Fossil Fuel Obligation (described in Section A2) |
| NFPA |
Non-Fossil Purchasing Agency; administers the NFFO contracts and auctions NFFO energy and ROCs |
| NFPAS |
Non-Fossil Purchasing Agency Scotland; administers the auction of SRO ROCs |
| NGT |
National Grid Transco; the GB Transmission System Operator for electricity and gas under BETTA |
| NIAER |
Northern Ireland Authority for Energy Regulation; created on 1 April 2003 (see also Ofreg) |
| NIE |
Northern Ireland Electricity, part of the Veridian Group |
| NI-NFFO |
Northern Ireland NFFO |
| NOx |
Nitrous oxide and other oxides of nitrogen |
| NPPG |
National Planning Policy Guidance documents published by the Scottish Executive |
