Power generation

According to initial estimates, in 2009 net domestic power generation (see table below) decreased by 9.2% year on year.
Breaking down the figures for generation by source, net of ancillary services, we see a decline in thermal power generation for the year of 13.7% from 2008.
In 2009, hydroelectric production rose by a significant 9.5% compared with 2008, after taking into account consumption for ancillary services.

The annual hydroelectric production index exceeded the figures recorded for the preceding year, rising to 1.03 compared with 0.91 in 2008.

Wind and photovoltaic generation once again rose dramatically compared with the previous year, posting a 35.3% overall rise compared with 2008, spurred by growth in wind assessed at around 25.2%, and 288.6% growth in photovoltaic energy compared with the preceding year.
Geothermal generation posted a modest 3.2% fall compared with the preceding year.

DOMESTIC POWER GENERATION

 Generation  
GWh 2009* 2008 Change %
Gross hydro generation 51,743 47,227 4,516 9.6
Gross thermal generation 225,487 261,328 -35,341 -13.5
Gross geothermal generation 5,347 5,521 -174 -3.2
Gross wind generation 6,087 4,861 1,226 25.2
Gross photovoltaic generation (1) 750 193 557 288.6
Total gross generation 289,914 319,13 -29,216 -9.2
Hydro ancillary services 658 554 104 18.8
Thermal ancillary services 10,052 11,179 -1,127 -10.1
Geothermal ancillary services 313 323 -10 -3.1
Wind ancillary services 11 9 2 22.2
Photovoltaic ancillary services 0 0 0 -
Total ancillary services 11,034 12,065 -1,031 -8.5
Net hydro generation 51,085 46,673 4,412 9.5
Net thermal generation 215,935 250,149 -34,214 -13.7
Net geothermal generation 5,034 5,198 -164 -3.2
Net wind generation 6,076 4,852 1,224 25.2
Net photovoltaic generation (1) 750 193 557 288.6
Total net generation 278,88 307,065 -28,185 -9.2

(*) Provisional figures.
(1) Includes photovoltaic plants subsidised through GSE Energy Account.