c03f9801-e994-4b7a-beb7-f50bdafa018c20211115085306989naun:naunmdt@crossref.orgMDT DepositInternational Journal of Geology1998-449910.46300/9105http://www.naun.org/cms.action?id=28304720214720211510.46300/9105.2021.15https://www.naun.org/cms.action?id=23318A.Skujevskahttps://www.naun.org/main/NAUN/geology/2021/a162004-008(2021).pdfF.Romagnolihttps://www.naun.org/main/NAUN/geology/2021/a162004-008(2021).pdfT.Zosshttps://www.naun.org/main/NAUN/geology/2021/a162004-008(2021).pdfI.Laicanehttps://www.naun.org/main/NAUN/geology/2021/a162004-008(2021).pdfD.Blumbergahttps://www.naun.org/main/NAUN/geology/2021/a162004-008(2021).pdfTo achieve national target proposed by the Renewable Energy Source Directive 2009/28/EC, to also accomplish to the CO2 emission reduction targets and to decrease the energy dependency Latvian government is planning to adopt different strategy policies such as feed-in tariffs (FITs) and capital subsidies, in order to incentive investor to use renewable based technology for power production Neverthelss it is crucial to understand in long term perspective the effect and the costs of a specific policy (made even by the combination of different policy tools) applied to the energy sector. 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