Portugal (The Azores) - Electricity Generation

The high temperature geothermal resources are restricted to the volcanic islands of Azores Archipelago, with operating plants at S.Miguel Island (Ribeira Grande Geothermal Field) and advanced project in Terceira Island (Pico Alto Geothermal Field). Powerproduction from geothermal resources in Azores presently meets 42% of the electrical consumption of S. Miguel, and over 22% of the total demand of the archipelago (Carvalho, et al., 2015).

Development since WGC2010: no new plants.

Installed capacity 29 MWe                     
Geothermal Electricity 196 GWh/y

Source:  Ruggero Bertani, Geothermal Power Generation in the World 2010-2014 Update Report

Installed geothermal generating capacity (December 2009) in MW 

Sao Miguel, Azores28

In Portugal, exploitation of geothermal resources for electric power generation has been developed successfully on the largest and most populous Azores island, São Miguel by Electricidade dos Açores. The Ribeira Grande field (about 250°C) has been expanded to a total capacity of 28 MW, through a second binary unit at Pico Vermelho of 13 MW in 2006, covering about 40% of the electricity need of the island (23 MW net). It is expected to double the contribution of geothermal electricity in the coming years

On Terceira island a project for installing 12 MW is ongoing (Pico Alto field, where temperature of above 300°C have been recorded), as well as additional expansion of Ribeira Grande, with a forecasted investment of about 200 MEuro in the next years. Unfortunately, the lack of request on the other small island will not allow the realization of any important development, despite the presence of a good resource.

The increase of 13 MW from year 2005 has a very important percentage value: 78%, reaching one of the highest score.

Taken from Ruggero Bertani’s paper, " Geothermal Power Generation in the World 2005–2010 Update Report ", published in Proceedings of the World Geothermal Congress 2010, Bali, Indonesia, 25-29 April 2010.