Excellence Engineering provides varying levels of Front End Engineering (FEE/FEED), Front-End Loading (FEL), Feasibility Analysis, or Conceptual Engineering to our clients. The level of effort and terminology is highly driven by the quality (accuracy range) requested and the initial work provided to analyze. Below is a table of generally accepted cost estimate accuracy ranges based on various stages of engineering and analysis:

Stage of Project

Engineering Complete

Accuracy Range



Order of Magnitude ($5MM, 10MM,…



+/- 30%








Excellence Engineering provides flexibility to how our resources are utilized during the different phases of the project process. If our client does not have any resources to allocate to the feasibility effort, our project team can provide a turnkey service. If only a specific discipline or resource is required to aid our client’s team, we will accommodate as required.

Typical deliverables to support feasibility studies include Process Flow Diagrams, P&IDs, Site Plans, Equipment Lists, Equipment Quotations, Scope of Work, and Project Schedules. These deliverables will be developed to differing levels of completeness based upon the required accuracy range of the estimate.

Excellence Engineering utilized Aspentech’s In-Plant Cost Estimator or our client’s provided tools for production of estimates. Risk ranking analysis can be performed to better understand project risks and contingencies to communicate to stakeholders.