| MONTHLY ELECTRICITY STATISTICS, March 2007 - 36 | ||||||||||||||||||||||
| PRINCIPLES AND DEFINITIONS | ||||||||||||||||||||||
| General notes | ||||||||||||||||||||||
| - The objective of the Monthly Electricity Statistics is to provide an early indication of supply side trends in the electricity sector. Therefore, to allow timely publication, the IEA may supplement national statistics with data from other sources. | ||||||||||||||||||||||
| - Where adequate information is not available from external sources estimates have been made by the IEA. Methodological notes are provided on individual country pages. | ||||||||||||||||||||||
| - Definitions are consistent with the IEA's "Electricity and Heat" annual questionnaire. Statistics are subject to revision upon official receipt of the annual questionnaire from National Administrations or improved data becoming available. | ||||||||||||||||||||||
| - Monthly statistics are consistent with those provided in the Quarterly Statistics published by the IEA. | ||||||||||||||||||||||
| - Electricity production is reported in TWh by fuel type. The grouping of electricity generation by source reflects available monthly data and/or small individual quantities. | ||||||||||||||||||||||
| - Note that historic data is often recalculated. Therefore, the latest publication should be considered most accurate. | ||||||||||||||||||||||
| Regional and organisational summaries may also change based on country recalcuations. | ||||||||||||||||||||||
| Basic definitions | ||||||||||||||||||||||
| - 'Production' = | Net generation excludes power station own use. | |||||||||||||||||||||
| - 'Total Indigenous Production' = | The sum of electricity production by fuel type. | |||||||||||||||||||||
| - 'Total Consumption (Observed)' = | Total Indigenous Production + Imports - Exports. | |||||||||||||||||||||
| - 'Thermal' = | Production from combustible fuels, including biomass. | |||||||||||||||||||||
| - 'Hydro' = | Total output from hydro and pumped hydro stations, hence ignoring electricity input to pumped hydro stations. Within the MES, this use of electricity is defined as occurring on the consumption side of the energy balance, and hence is not considered. | |||||||||||||||||||||
| - 'Geo./ Solar/ Wind/ Other' = | Generation from geothermal, solar, wind and all other renewables not included elsewhere. | |||||||||||||||||||||
| - 'Year' = | Calendar year (January to December) unless otherwise stated. | |||||||||||||||||||||
| - 'Year-to-date' = | The sum of all months from the start of the calendar year to the latest month. | |||||||||||||||||||||
| Publication details and further information | ||||||||||||||||||||||
| - This publication is released in the middle of each month onto the IEA's Website. | ||||||||||||||||||||||
| (http://www.iea.org/Textbase/publications/index.asp). | ||||||||||||||||||||||
| - Data should not be reproduced for publication without permission of Energy Statistics Division, IEA. | ||||||||||||||||||||||
| Comments and queries on the data or on the presentation should be addressed to: | ||||||||||||||||||||||
| Email: CES@iea.org | ||||||||||||||||||||||
| For other information please contact the Energy Statistics Division of the IEA by: | ||||||||||||||||||||||
| Email: stats@iea.org | ||||||||||||||||||||||
| Fax: +33 (0)1 40 57 66 49 or | ||||||||||||||||||||||
| Phone: +33 (0)1 40 57 66 25 | ||||||||||||||||||||||
| International Energy Agency | ||||||||||||||||||||||
| 9, rue de la Fédération, 75739 Paris Cedex 15 - France | ||||||||||||||||||||||
| © OECD/IEA, 2007 | INTERNATIONAL ENERGY AGENCY | |||||||||||||||||||||