Exergy signs contract with EDA renováveis for 4 MW geothermal plant in Portugal


Exergy has signed a contract with EDA Renováveis for the construction of a 4 MW geothermal binary plant in the Azores, Portugal. The plant will be built on Terceira island in an area called Chambre-Pico Alto. The plant is planned to be fully operational by the beginning of 2017.

The scope of the contract is to realize a turnkey solution for the construction of the Pico Alto geothermal power plant utilizing the geothermal resource available from the existing wells in the most efficient way. The design and manufacturing of the ORC plant and the engineering, procurement and construction phases will be carried out by Exergy together with CME, a well-established international EPC company with headquarters in Lisbon, Portugal.

The resource is at high enthalpy and both vapor and liquid phases are exploited after separation. The use of the binary technology has been preferred to the traditional flash power plants due to its better fitting to the environmental constraints and its higher capacity of adapting to the variation in resource flow rate and pressure.

The plant will exploit the resource by means of an efficient cycle design that utilizes the heat available either in the geothermal brine and steam flows in its heat exchangers. No extra water will be used thanks to the direct air cooling of the working fluid. The highest possible conversion efficiency will be reached thanks to the Radial Outflow Turbine specifically designed for EDA Renováveis by Exergy’s engineers.

A groundbreaking ceremony for Pico Alto project was held on Terceira on 22nd October, organized by EDA Renováveis and chaired by the Regional Secretary of Tourism Mr. Vítor Ângelo de Fraga and the Chairman of EDA Renováveis Prof. Duarte José Botelho da Ponte. Taking part in the ceremony, EXERGY’s CEO Claudio Spadacini.