Stakeholders　satisfaction,　as　well　as　an　effective　involvement,　is　of　utmost　importance　for　any　mega　project,　when　it　comes　to　the　public　concerning　projects　this　role　becomes　more　essential.　In　the　case　of　developing　countries　where　the　political,　economic　and　administrative　settings　are　challenging,　managing　all　the　key　stakeholders　satisfaction　for　prosperous　projects　becomes　extremely　intricated,　no　matter　even　it　is　about　sustainable　and　renewable　energy　projects.　Studies　have　been　conducted　on　project　governance　and　shareholder　relationships,　nevertheless,　the　role　of　power-interest　matrix　in　maximizing　stakeholder　satisfaction　on　renewable　energy　projects　has　not　been　fully　explored　in　the　literature.　This　research　was　attempted　to　investigate　the　direct　and　indirect　influencing　mechanisms　of　the　stakeholders　satisfaction　in　conjunction　with　five　critical　success　factors　(CSFs)　(namely　communication　factors,　team　factors,　technical　factors,　organizational　factors　and　environmental　factors)　in　the　renewable　energy　projects.　Alongside　a　direct　link　of　the　CSFs　in　renewable　energy　projects,　an　indirect　influence　of　both　the　internal　and　external　stakeholders　satisfaction　has　been　also　checked　in　this　research.　A　quantitative　approach　was　used　to　collect　the　questionnaire　survey　based　data　from　the　professionals　working　in　the　renewable　energy　industry　of　Pakistan.　A　snowball　sampling　technique　was　used　to　collect　a　total　of　565　valid　responses　from　the　professionals　working　on　medium　and　large　scale　renewable　energy　projects.　The　structural　equation　modelling　(SEM)　technique　was　used　to　perform　the　data　analysis　and　provide　inferences　between　the　direct　impacts　of　CSFs　and　indirect　influences　of　internal　and　external　stakeholders　satisfaction　in　the　renewable　energy　projects.　The　first　stage　of　the　SEM　analysis　depicts　the　direct　impacts　of　the　CSFs　on　renewable　energy　projects.　However,　in　the　second　stage,　though　the　mediating　role　of　internal　stakeholders　satisfaction　was　observed　in　between　all　the　CSFs　and　project　success,　external　stakeholders　satisfaction　was　found　to　be　significantly　mediating　only　between　the　communication　factors　and　environmental　factors,　and　renewable　energy　project　success.　Though　the　findings　provide　useful　guidelines　for　the　professionals,　policymakers　and　administrators　that　in　order　to　have　prosperous　renewable　energy　projects　the　influence　of　both　the　internal　and　external　stakeholders　satisfaction　is　important　alongside　CSFs,　however,　the　role　of　internal　stakeholders　satisfaction　is　more　critical　to　consider　for　such　sustainable　projects.　©　2022　The　Authors.　Sustainable　Development　published　by　ERP　Environment　and　John　Wiley　&　Sons　Ltd.