This handbook provides a detailed analysis of the financial intricacies within the Just Energy Transition Partnership (JETP) for Indonesia. This study analyzed funding sources, highlighting the prevalence of loans over grants and the impact of non-concessional loans on Indonesia’s financial resources. It also discusses the risks and challenges of overreliance on private funding and suggests strategies to navigate these complexities. Additionally, the handbook highlights debt swap initiatives and emphasized the need for systemic transparency to mitigate corruption risks and foster inclusive decision making. This concise guide offers robust recommendations to enhance financial resilience and transparency within the JETP scheme, benefiting policymakers and stakeholders involved in the energy transition.