Energy: New 55 MW Geothermal Plant

The Costarican Institute of Electricity delivered the Las Pailas II Geothermal Plant located in Curubandé, Guanacaste province, at a $366 million cost.

Thursday, July 25, 2019

According to projections, the work became more expensive and was delivered months late, since the 2016-2035 Generation Expansion Plan specifies that the plant had an initial cost of $335 million and was to begin operations in January 2019. The total final investment was $366 million.

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Luis Diego Pérez, project director, explained that "Las Pailas II has a state-of-the-art turbine, sound insulation panels and a fiberglass cooling tower. In addition, all its wells were drilled with a directional technique, not vertical. It puts us at the forefront of energy infrastructure."

Las Pailas II joined Miravalles I, Miravalles II, Miravalles III, Miravalles V and Boca de Pozo -located in Campo Alfredo Mainieri Protti, in Bagaces-, in addition to its predecessor Las Pailas I, in Liberia. With these plants, the country adds 262 MW of installed geothermal capacity, the third largest in America, details the statement from the Costa Rican Institute of Electricity.

Technical data sheet of the project:

- Location: Curubandé de Liberia, Guanacaste province.
- Installed capacity: 55 megawatts
- Projected average annual generation: 410 gigawatt hours
- Start of construction: April 2013
- Delivery of the work: July 2019
- Main works: Machine house, cooling tower and substation
- Wells: 21, drilled with directional technique (not vertical)
- Average well depth: 2,200 meters
- Pipeline: 13.88 kilometers
- Pressurized pipe: 8.63 kilometers
- Initially planned investment: $335 million

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The state run power company has begun development of a management plan and the drilling of wells in the Pailas II project, the first of three plants to be developed in the northern part of the country.

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Feasibility studies are being carried out, funded by the International Cooperation Agency of Japan.

Feasibility studies for geothermal projects Pailas II and Borinquen will be financed by the Japanese government, under an agreement of understanding between the Costa Rican Electricity Institute (ICE) and the International Cooperation Agency of Japan (JICA), as a result of an official visit by president Laura Chinchilla to the Asian country.

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