Potential by technology / Geothermal
Brief Summary about Geothermal Project
During the recent years one of the most actual and important problems in Armenia is investigation and exploration of the geothermal sources – as renewable energy resource with capacity to “firm capacity” for base-load coverage.
As geophysical data demonstrate, due to the extensive development of newest volcanic processes the territory of Armenia is considered one of the most perspective regions in terms of settling and development of the geothermal energy. In particular, it refers to the Syunik volcanic plateau, especially around Jermaghbyur geothermal source.
Based on World Bank funded project (TF053910), summary indices of Jermaghbyur geothermal power plant (GPP) are presented in Table 1 bellow.
The survey with the 19 mining companies operating in the region helped to estimate the cost range of USD 800-900 thousand (2006 US$) for 1 km research drilling in Jermaghbyur plateau in Syunik Marz of the Republic of Armenia.
Total investment cost for 25 MW installed capacity Jermaghbyur GPP has been estimated at about AMD 17.6 billion (USD 39.1 million). Specific investment costs per 1 kW installed capacity are given in Table 2 by categories.
Currently under another WB/GeoFund on-going project several other regions of Armenia are studied. Based on the discussions with the MOE, local geophysical and geological specialists and the field trip undertaken by the Bank experts it was agreed to limit further investigation works to Karkar (Kar) and Gridzor (Gri) sites (see the fig. bellow). It was further agreed to structure the project in two phases that will correspond to the proposed sequencing of performing investigation works:
Phase oneThis will include geological field works (scouting) and magneto-telluric (MT) sounding of the two selected potential geothermal fields. To promote quality execution of the field works the mission recommended that the interpretation of the results of the MT sounding field works be conducted by a company that is independent from the company performing MT sounding works. This ensures robustness of performed works by revealing any shortcomings of the field investigation works. The completion of Phase one should allow to assess whether further investigation works are justified and, if yes, select the most promising geothermal field for Phase two investigations.
Phase twoThis will involve performing of three dimensional (3D) seismic survey. The 3D survey will allow sketching the outline of the subsurface structure and encompassing the depth of potential geothermal reservoir, its thickness and extent, and the presence of major fault zones. The mission recommended that the results of this survey also be interpreted by an independent company.
The results of investigations for Karkar and Gridzor sites would be available at the 2-nd quarter of 2010.