Vietnam's biomass energy sector enters a transformative phase as Circular 12/2025/TT-BCT establishes an expressly negotiable Power Purchase Agreement framework, fundamentally changing how foreign investors must approach project bankability. Understanding the institutions and decision-makers behind PPAs—from MOIT and EVN to EVNEPTC and NSMO—now determines whether biomass projects can achieve financial close, as tariff methodologies, fuel security, grid access