Abstract
We have analyzed the major activities carried out for geothermal electricity
generation since WGC2005. New data have been taken from WGC2010 country
update reports, private communications from IGA members and affiliated
organizations. Other updates have been collected from websites of
private and public organizations involved in geothermal development.
Plants commissioned in 2010 (after WGC2010) have been included in
the installed capacity, even though their produced energy has not
been accounted for. An increase of about 2 GW (herein we use MW and
GW for the electrical capacity and MWth and GWth for thermal capacity)
in the five year term 2005-2010 has been achieved (about 22\%), following
the rough linear trend of approximately 400 MW/year, with an evident
increase of the average value of about 200 MW/year in the 2000-2005
period. The most significant data to be highlighted from this paper
are: a total of 24 countries now generate electricity from geothermal
resources; the total installed capacity worldwide is 10,898 MW, corresponding
to about 67,246 GWh of electricity (early 2010 data); Germany, Papua
- New Guinea, Australia, Turkey, Iceland, Portugal, New Zealand,
Guatemala, Kenya, and Indonesia have increased the capacity of their
power plant installations by more than 50\% with respect to the year
2005; the top five countries for their electricity production are
USA, Philippines, Indonesia, Mexico and Italy; five countries realized
an increase above 100 MW with respect to 2005: USA, Indonesia, Iceland,
New Zealand and Kenya. The prospective for growth during 2010-2015
are good, with a strong possibility of realizing a big increase in
the installed capacity up to 19 GW, if all the currently identified
projects would be realized all around the world. * Handbook of who,
how much and where for the geothermal electricity in the world. *
The most recent update for geothermal electricity history for each
country. * Ranking of the top countries, geothermal fields, operators
and manufacturers. * Forecasting for short and long term, per country,
region and world and CO2 saving. * Classification of power plant
categories, in number of units, MW and GWh.
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