The objective of the Private Sector Renewable Energy and Energy Efficiency Project is to help increase privately owned and operated energy production from indigenous renewable sources within the market-based framework of the Turkish Electricity Market Law, enhance energy efficiency, and thereby help reduce greenhouse gas emissions. This project paper seeks the approval of the Executive Directors of the World Bank to provide an additional loan in the amount of US$500 million equivalent to Turkiye S?nai Kalk?nma Bankas? (TSKB) and to Turkiye Kalk?nma Bankas? (TKB), guaranteed by the Republic of Turkey, for the project The additional loan would help finance the costs associated with scaled-up activities to enhance the positive impact of the project. TKB and TSKB, the two Financial Intermediaries (FI) under the project, have disbursed almost the entire original loan amounts, and more than 80 percent of the Clean Technology Fund (CTF) allocation, and are in need of resources to meet the additional demand for both renewable energy (RE) and energy efficiency (EE) investments. The development objective and implementation arrangements will remain the same as under the original project. Other changes to the original project, have been made as follows: 1) updates of the project operational manuals to revise the thresholds and eligibility criteria for RE and EE investments; 2) amendment of the project results framework to account for scaled-up activities, and 3) addition of four river basins to the list of eligible basins. The closing date for the additional loan will be December 31, 2016.