Final Investment Decision
Definition
The final investment decision is the formal authorization to proceed with funding, procurement, and execution of a project.
Key Points
- Marks the transition from planning to delivery.
- Depends on design maturity, cost confidence, and risk acceptance.
- Common in infrastructure, energy, and industrial programs.
- Often follows front-end engineering work and commercial review.
Concept
It is a governance and capital-allocation milestone rather than a technical deployment step.
Explainer
After this decision, the project is no longer hypothetical. The organization has accepted the financial and execution risk and committed to delivery.
Cite this entry
Final Investment Decision. ConnectedEarth Knowledge Base. https://connectedearth.space/knowledge-base/final-investment-decision/ (updated 13 September 2026).