This study Meeting Conditional Targets in Nationally Determined Contributions of Developing Countries: Renewable Energy Targets and Required Investment of GGGI Member and Partner Countries examines contributions to carbon mitigation and necessary investment for expansion of renewable energy in Global Green Growth Institute (GGGI) member countries by analyzing their NDCs and national energy plans. It is estimated that the 27 GGGI member and partner countries analyzed in this study would conditionally reduce at least 5058 MtCO2eq of GHG by 2030 and increase the cumulative renewable energy generation capacity up to around 356,184 MW by 2030. To accomplish these pledges, an investment of at least US$258 billion will be required by 2030: US$98–260 billion for solar photovoltaics (PV); US$76–139 billion for wind energy; US$57–330 billion for hydropower; US$10–23 billion for bioenergy; and US$16–45 billion for geothermal.