Glossary Glossary

The following definitions reflect those used by the International Energy Agency (IEA); definitions used by other organisations and publications may vary.

N2O

nitrous oxide

NAMA

nationally appropriate mitigation action

NAP

national allocation plan, under the EU ETS, each government must produce a national allocation plan

NBP

national balancing point

NEA

Nuclear Energy Agency (an agency within the OECD)

NEC

National Energy Commission (China)

NEDC

New European Driving Cycle

NEEDS

New Energy Externalities Development for Sustainability (research project for the European Commission)

NEET

Network of Expertise in Energy Technology, an initiative to enhance collaboration between OECD and non-member countries (launched in May 2006)

NESO

National Emergency Strategy Organisation (from the IEA’s Emergency Policy Division)

NET

Network Unit (within the IEA Energy Technology Policy [ETP] Division)

NEWNE

Synchronous grid operation of northern, eastern, western and north-eastern grids (India)

NGCC

natural gas combined cycle

NGL

natural gas liquid

NGO

non-governmental organisation

NGOC

natural gas open-cycle

NGV

natural gas vehicle

NIMBY

not in my back yard

NOC

national oil company

NOx

nitrogen oxides

NSM

National Solar Mission (India)

NTP

National Tariff Policy (India)

NYMEX

New York Mercantile Exchange

NZEC

near-zero emissions coal project

natural decline rate

the base production decline rate of an oil or gas field without intervention to enhance production.

natural gas liquids

the liquid or liquefied hydrocarbons produced in the manufacture, purification and stabilisation of natural gas. These are those portions of natural gas which are recovered as liquids in separators, field facilities, or gas processing plants. NGLs include but are not limited to ethane, propane, butane, pentane, natural gasoline and condensates.

non-binding target

allows a country to sell allowances if its emissions are below the target, but does not oblige it to buy allowances if emissions are above.

non-energy use

fuels used for chemical feedstocks and non-energy products. Examples of non-energy products include lubricants, paraffin waxes, coal tars, and oils used as timber preservatives.

nuclear

the primary heat equivalent of the electricity produced by a nuclear plant with an average thermal efficiency of 33%.