FEED (Front-End Engineering Design)

FEED (Front-End Engineering Design) is the project phase where concept-level engineering is developed into design sufficient to support a Final Investment Decision (FID). It is the standard terminology in energy, process, and offshore project delivery, though similar concepts exist across all sectors. During FEED, the scope is defined to the level where credible three-point cost and schedule estimates can be produced, risk registers are developed and quantified through QRA, and procurement strategy is established.

The output of FEED is a FID-ready package: a defined scope, a baseline cost estimate (AACE Class 2-3 typically), a baseline schedule to the level needed for FID, a QRA producing P50 and P80 confidence positions, a risk register, and the contracting strategy. The investment committee uses this package to decide whether the project should proceed to execution. A FEED that produces a polished cost figure without supporting analytical depth — QRA, risk register, correlation treatment — is a FEED that does not support a defensible FID.

For project controls, FEED is where most of the leverage is. Decisions made at FEED — scope definition, WBS structure, contracting model, baseline programme — determine what is practically possible to manage during execution. Controls capability brought in post-FID can optimise execution against the baseline but cannot correct structural weaknesses in how the project was set up during FEED. UK energy, offshore wind and industrial decarbonisation programmes in particular benefit from having project controls engaged actively through FEED rather than waiting until post-FID mobilisation.