Pirris is a 140MW hydro power project. It is located on Pirris river/basin in San Jose, Costa Rica. The project is currently active. It has been developed in single phase. The project construction commenced in 2003 and subsequently entered into commercial operation in 2011.

Project Type Total Capacity (MW) Active Capacity (MW) Pipeline Capacity (MW) Project Status Project Location Project Developer
Hydropower 140 140 Active San Jose, Costa Rica Astaldi


The project was developed by Astaldi and is currently owned by Instituto Costarricense de Electricidad.

The hydro reservoir capacity is 30 million cubic meter. The gross head and net head of the project are 884m and 829m respectively. The penstock length is 740m. The project generated 561 GWh of electricity.

Development Status

The project construction commenced in 2003 and subsequently entered into commercial operation in 2011.

Contractors Involved

Andritz Hydro was selected as the turbine supplier for the hydro power project. The company provided 2 units of pelton turbines, each with 70MW nameplate capacity.

Andritz Hydro supplied 2 electric generators for the project. The generator capacity is 76 MVA.

About Astaldi

Astaldi SpA (Astaldi) is a construction contracting company. It carries out the designing, civil engineering, procurement, construction, and management services for various public infrastructure and large-scale civil engineering works. The company executes civil and hydraulic construction, electromechanical, environmental and infrastructure engineering, including railways and metros, roads and motorways, ports and airports, hydroelectric, and civil and industrial construction complex projects. Astaldi, through its subsidiary NBI, provides plants design and maintenance services. It also provides facility management and participates in various concession services. It has operations in several countries across Asia, the Americas, Africa and Europe. The company is headquartered in Rome, Italy.


All power projects included in this report are drawn from GlobalData’s Power Intelligence Center. The information regarding the project parameters is sourced through secondary information sources such as electric utilities, equipment manufacturers, developers, project proponent’s – news, deals and financial reporting, regulatory body, associations, government planning reports and publications. Wherever needed the information is further validated through primary from various stakeholders across the power value chain and professionals from leading players within the power sector.