The Tunisian Solar Plan is Tunisia's official long-term plan for renewable energy. It includes 2030 targets for investment in wind energy, solar photovoltaic and concentrated solar power. This report details a UNDP modelling analysis on possible government interventions needed to create an investment environment to meet these targets. The report supports effort to identify government interventions to be included in Nationally Appropriate Mitigation Actions (NAMAs). The results provide quantitative data on the cost effectiveness of measures.