This essay presents an exploration of climate-related sovereign wealth fund (SWF) investments and their implications for financing energy transitions within Africa, Nigeria, and developing economies. It considers the investments within a broader fiscal policy approach from a climate and systemic risk angle. SWF‘s primary function of savings and stabilization for resource-dependent economies has evolved to climate accountable governance and investments. This paper utilizes comparative institutional and thematic meta-analysis techniques to examine governance issues, stranded-assets, and SWF‘s potential contributions via green-blended finance and investments in renewable energy infrastructure in financially constrained economies. It identifies an existing tension between the stabilization in the short term and the sustainability in the long term. It suggests the alignment of SWF‘s governance, fiscal net frameworks on national WSWGs of SW and SN0 targets via adaptive governance, accountable frameworks, and reinvestment at the national level. Improved SWF transparency and blended finance innovation should enable SWF to lead the provision of climate equity and fiscal energy transition to emerging economies.