| Abstract |
The Geothermal Trend Report, an annual publication by the International Energy Agency - Geothermal Implementing Agreement (IEA-GIA), provides an overview of geothermal energy data in GIA member countries. The work for this report is accomplished within Annex X “Data Collection and Information”. The main objective of this annex is to collect data on geothermal energy uses, trends and developments in GIA member countries in a standardized way, and to publish these data in a brief report on a yearly basis. All GIA member countries are required to support the work on the Trend Report by providing information. Additional data from sources such as the publications associated with the World Geothermal Congress and the GIA Annual Reports have been compiled and analyzed to show trends in geothermal energy uses in GIA countries from the year 2000 on. Based on the results of the first data collection and publication reviews, the Report “Trends in Geothermal Applications - Survey report on geothermal utilization and power development in IEA-GIA member countries in 2010 with trends in geothermal power generation and heat uses”, in short the Geothermal Trend Report, was published in 2012 followed by the second and third issue in 2013 and 2014, respectively. The Geothermal Trend Report provides a brief overview of data such as installed capacities and produced electricity and heat, as well as relevant political and economic information. The 14 GIA countries contribute a significant amount to the geothermal energy produced worldwide: They account for nearly half of the geothermal direct uses and contribute about 60 % to the geothermal power generation worldwide. The Trend Report also provides CO2 and fossil fuel savings which are calculated on the basis of the GIA conversion (Mongillo 2005) and efficiency factors given in Lund et al. (2005). Data on costs, investments, and employees proved not to be representative. A policy chapter describes the role of geothermal in national policies and support mechanisms for geothermal. Furthermore, a short overview about geothermal highlights and project developments is given. Overall, the GIA Trend Report adds substantial information on geothermal energy use on an international scale and helps to point out trends and market developments. It is intended to continue with the data collection and to combine the work of GIA Annex X with international efforts to collect information on a regular basis by collaboration with other organizations and institutions. The GIA Trend Reports are available on the internet at: http://iea-gia.org/category/publications. |