A future decarbonized global energy sector could require up to $110 trillion in new investment. With so much funding at stake, it is likely that low-carbon energy systems will attract and perpetuate corruption. This paper aims at providing an overview of private-sector stakeholders in the renewable-energy realm and examines possibilities and instances of corruption at the interface between private climate interventions and international development. In this paper, corruption risks and instances facing wind energy (including a mix of offshore and onshore designs) and solar photovoltaic panels (in off-grid configurations) are investigated. Based on original expert interviews and document analysis, we explore corruption risks in two national contexts (Mexico and Kenya) before offering a suite of recommendations and solutions to address corruption, and a conclusion with suggestions for future research.