Electricity Plants
Asia-Pacific Economic Cooperation (APEC)

European Commission - Eurostat
Electricity plants refers to plants which are designed to produce electricity only. If one or more units of the plant is a CHP unit (and the inputs and outputs can not be distinguished on a unit basis) then the whole plant is designated as a CHP plant. Both main activity producer (formerly known as public) and autoproducer plants are included here. Heat from chemical processes for electricity generation is also included here.

International Energy Agency (IEA)
Electricity plants refers to plants which are designed to produce electricity only. If one or more units of the plant is a CHP unit (and the inputs and outputs can not be distinguished on a unit basis) then the whole plant is designated as a CHP plant. Both main activity producer (formerly known as public) and autoproducer plants are included here. Heat from chemical processes for electricity generation is also included here.

Latin American Energy Organization (OLADE)
Depending on the case, these transformation centers may consist of hydroelectric plants, conventional thermoelectric plants with steam turbines, gas turbines and internal combustion engines, nuclear power plants and geothermoelectric plants.

Power Production in Public Utility Plants is the total amount of electricity produced by a country’s public utility plants, in other words, the total electricity delivered to service by all plants. The possible types of plants are: a) Hydroelectric b) Small Hydroelectric c) Geothermal d) Nuclear or Fission e) Steam Turbines f) Gas Turbines g) Diesel Motors.

None of these plants should be omitted, whether belonging to the interconnected system or stand–alone plants. The latter may create difficulties for information gathering, and we should not discard the need to perform surveys to estimate production.

Power Production by Self–producers - self–producers are private or public entities such as industries; farming establishments; business establishments; and private households.

They have facilities to produce their own electricity as required, due to deficient or lacking public services, or as an emergency service. The types of plants that may be found are: -Small hydroelectric -Steam turbines -gas turbines -diesel motors -internal combustion engines. Consider all electricity produced by all these plants. In most countries, the respective data are not available. The best way to get them is: 1) Try to identify self–producers who are also macro–consumers and represent, let’s say, 90 % of self–production. 2) At a second stage, apply a broad survey to capture the very numerous small self–producers.

Organisation of Petroleum Exporting Countries (OPEC)
Electricity generation shows the use of primary and secondary fuels for the production of electricity and heat in public utilities as negative entries. Gross electricity produced (including power stations’ own consumption) appears as a positive quantity. Heat produced by plants appears as a positive quantity in “Heat”.

United Nations Economic Commission for Europe (UNECE)
Electricity plants refers to plants which are designed to produce electricity only. If one or more units of the plant is a CHP unit (and the inputs and outputs can not be distinguished on a unit basis) then the whole plant is designated as a CHP plant. Both main activity producer (formerly known as public) and autoproducer plants are included here. Heat from chemical processes for electricity generation is also included here.

UNSD Energy Statistics Section
Electricity can be produced by public utilities and/or by self-producers.

Self producers include undertakings which, in addition to their main activities, they produce (individually or in combination) electric energy intended, in whole or in part, to meet their own needs. They may be privately or publicly owned.

Public utilities comprise the undertakings whose essential purpose is the production, transmission and distribution of electric energy, primarily for use by the public. These may be private companies, co operative organizations, local or regional authorities, nationalized undertakings or governmental organizations.