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The PPP framework can involve risk-sharing mechanisms between public administration and private sector to encourage private investors to fund these projects. However, these risk-sharing mechanisms, such as Minimum Revenue Guarantee or Revenue Cap (RC), could generate opportunistic behaviors. For this reason, we can set this problem as a game in which government and private investors would act as players. This paper proposes a mathematical model to evaluate the PPP projects through a combination of Game Theory (GT) and Real Options Approach (ROA). The ROA is needed to price the uncertainty that affects PPP investments, and the GT captures the strategic interactions between public and private sectors. A case study on a wastewater treatment project is developed to apply the model we proposed.<\/jats:p>","DOI":"10.1007\/s10479-024-06155-6","type":"journal-article","created":{"date-parts":[[2024,7,25]],"date-time":"2024-07-25T04:01:54Z","timestamp":1721880114000},"page":"581-599","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["A strategic options game approach to support PPP investment decisions under risk-sharing mechanisms"],"prefix":"10.1007","volume":"356","author":[{"given":"Marta","family":"Biancardi","sequence":"first","affiliation":[]},{"given":"Michele","family":"Bufalo","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8668-4102","authenticated-orcid":false,"given":"Antonio","family":"Di Bari","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3024-436X","authenticated-orcid":false,"given":"Giovanni","family":"Villani","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2024,7,25]]},"reference":[{"key":"6155_CR1","doi-asserted-by":"publisher","first-page":"419","DOI":"10.1016\/j.gfj.2006.05.006","volume":"17","author":"MR Armada","year":"2007","unstructured":"Armada, M. 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