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geothermal plant

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Turkish firm MB Holding will build Croatia’s first geothermal power plant, a 16.5 MW ORC solution based on a single axial multi-stage ORC turbine designed by Turboden, a group company of Mitsubishi Heavy Industries (MHI), leader in Organic Rankine Cycle (ORC) turbogenerators production for distributed power generation from renewable sources and waste heat.

After winning a bid in January 2015, MB Holding holds the permit to construct the country’s first geothermal plant.

“Croatia’s 35 percent of electricity will be provided by renewable sources after 2020” – said Muharrem Balat, chairman of MB Holding -. “We have selected Turboden among the possible suppliers because they will provide 10% higher revenues by means of optimized solution for our project, together with the reliability of the brand”.

The plant will be completed and fully functional within the end of 2016, generating electric power from a medium enthalpy geothermal source. Turboden will be responsible for the Engineering, Procurement and Construction of the equipment.

Thanks to Turboden’s 35 years of experience in ORC turbogenerator design, Turboden is providing the best-optimized configuration for the specific geothermal resource in order to maximize the return of the project. The Turboden geothermal module running on proprietary design axial multi-stage turbine grants outstanding efficiency and availability, allowing the highest benefits for the customer.

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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.

SAJ Electric