Acronyms and Abbreviations

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O.

O&M	operation and maintenance
OCE	Office of the Chief Economist (of the IEA)
OCGT	open-cycle gas turbine
OCM	oxidative coupling of methane
ODA	official development assistance
ODI	outward direct investment
OECD	Organisation for Economic Co-operation and Development
OEM	original equipment manufacturer
OHF	open-hearth furnace
OIM	Oil Industry and Markets Division (of the IEA)
OLADE	Organizacion Latinoamericana de Energia
OME	other major economies
OMR	Oil Market Report(IEA publication)
OLC	Office of the Legal Council (of the IEA)
OLIS	Online Information System, an OECD/IEA system for submitting official documents for OECD and IEA committees, standing groups and working parties
OME	other major economies
OPEC	Organization of the Petroleum Exporting Countries
ORC	organic Rankine cycle
OSTP	Office of Science and Technology Policy (United States)
OTEC	ocean thermal energy conversion