With 84% of its primary energy requirements met from imported fossil fuels, Mauritius, like many Small Island Developing States (SIDS), is extremely vulnerable to energy shocks. The grid emission factor of Mauritius is extremely high at 1.01 tonnes CO2/MWh due to the prevalence of imported coal (39%) and fuel oil (38%) in the electricity generation mix. Net greenhouse gas emissions are increasing at a rapid rate of 3% per year. The pressing need to significantly enhance Mauritius's energy independence and reduce greenhouse gas emissions is recognised in the country's Nationally Determined Contribution (2016), its Second National Communication to the UNFCCC (2010) and its UNFCCC Technology Needs Assessment (2014), as well as in a comprehensive suite of Government strategies and policies contained in the Long-Term Energy Strategy (2011-2025). Following a broad consultative process led by the NDA and backed by sound technical and financial analysis as well as considerable political will, this project will remove the principal bottlenecks to investment in low-carbon development for: (i) grid-connected intermittent renewable energy; and (ii) mini-grid PV for the principal outer island, Agalega. The project will be implemented in a two-phase approach so as to reduce the implementation risks to the GCF and ensure that the second funding disbursement is contingent upon successful completion of the first phase. The project seeks a total of USD 28.21 million of GCF grant resources, split across phase 1 (USD 12 million) and phase 2 (USD 16.21 million), to overcome identified barriers to low-carbon investment. The incremental logic of the project and its requirement for grant resources are clearly laid out in the proposal. Overall, the project will result in a reduction in greenhouse gas emissions of 4.27 million tCO2e over the lifetimes of the investments enabled, at a cost to the GCF of just USD 6.6/tCO2e.