Multidisciplinary engineering in renewable energy projects

When talking about renewable energy projects, such as solar plants, wind farms, or hybrid systems, it is common to imagine panels or turbines generating electricity; however, that image represents only the visible part of the project. Behind every installation there is a much more complex technical process, where multiple disciplines must be integrated so that everything works safely, efficiently, and profitably.

In the world of industrial projects, there is a reality that every engineer eventually understands through experience: the most costly problems do not appear during construction, but originate much earlier, in the initial decisions. Therefore, understanding how projects are structured and the role of multidisciplinary engineering in renewable energy is not just an academic matter, but a key tool to avoid errors that are later difficult and expensive to correct.

What is multidisciplinary engineering?

Multidisciplinary engineering makes it possible to integrate all the necessary disciplines within a project. In renewable energy, it involves coordinating civil, mechanical, electrical, control and automation, environmental engineering, among others.

The real value is not in the number of disciplines, but in how they are integrated. In practice, many problems do not occur within a discipline, but at their points of interaction.

Coordination errors may seem minor at the beginning, but they become significant and growing problems during execution.

Multidisciplinary engineering allows:

• Avoiding incompatibilities between equipment
• Optimizing costs from the design stage
• Complying with regulations
• Ensuring safety and reliability

Without this approach, a project can become technically compromised. In the case of renewable projects, they require studies, calculations, and decisions that affect their performance for decades.

How is an engineering project developed?

To understand why multidisciplinary engineering is so important, one must first understand the phases of an engineering project in practice. Although each company uses its own terminology, industrial projects essentially follow a progressive sequence that goes from identifying a need to putting a facility into operation.

This process does not simply consist of designing and building. On the contrary, the project evolves gradually, gaining definition at each stage. At the beginning, questions dominate; then technical decisions are made; and finally, the solution is executed.

From a practical point of view, these phases are usually grouped into major blocks such as conceptual, design, procurement, and construction—a structure widely used in the industry. However, in industrial projects, especially in sectors such as energy, oil & gas, and infrastructure, the early stages are organized within a structured process known as FEL (Front-End Loading).

FEL: the foundation of the project (from idea to basic engineering)

FEL (Front-End Loading) groups all the early phases of the project, from identifying the need to developing basic engineering. It is the process where the technical, economic, and strategic foundation of the project is built.

Within FEL, the following stages are progressively developed:

Identification of the need or opportunity

Every project begins when an organization identifies a need, problem, or opportunity. In renewable energy projects, this may be related to incorporating clean generation, optimizing energy consumption, or taking advantage of available natural resources.

At this stage, there is not yet a defined project, but rather an intention that must be correctly understood. A poor initial definition can carry errors throughout the entire project lifecycle.

Conceptual stage (FEL 1)

Once the opportunity is identified, the conceptual stage is developed, where a first vision of the project is built. Possible solutions are proposed, technological alternatives are identified, and a general understanding of the scope is established.

The goal is not to design in detail, but to define what type of project could be developed.

Pre-feasibility (FEL 2)

In this phase, a deeper analysis is conducted to determine whether the project makes sense. Site conditions, resource availability, regulatory constraints are evaluated, and a preliminary estimate of costs and benefits is made.

Pre-feasibility allows comparison of alternatives and reduces initial uncertainty, guiding the project toward more viable options.

Feasibility and FEED (FEL 3)

At this stage, the project reaches a much higher level of technical definition. Here, FEED (Front-End Engineering Design) is developed, where the project’s basic engineering is carried out.

During FEED:

• Design bases are established
• Main systems are defined
• Diagrams and layouts are developed
• Key equipment is selected
• Engineering disciplines are aligned
• More accurate cost and schedule estimates are prepared

Basic engineering allows understanding how the project will function and provides the necessary information for investment decisions. At this point, the project stops being conceptual and becomes a structured and viable solution.

Detailed design stage: preparing construction

Once FEL is completed and the project is approved, detailed engineering is developed, where all the information necessary for construction is generated.

Here, construction drawings, final specifications, precise calculations, and complete technical documentation are produced. If FEED defines how the project should be structured, detailed engineering defines exactly how to build it.

Procurement: ensuring coherence between design and supply

With the design fully defined, the project moves into procurement, where purchases and contracts are managed. This includes acquiring equipment, materials, and specialized services. The quality of this stage depends directly on the level of definition achieved during FEL and detailed engineering.

Construction and installation: the materialization of the project

The construction phase is where the project becomes a physical reality. Civil works are executed, structures are installed, equipment is assembled, and systems are integrated.

Although it is the most visible phase, it actually reflects the quality of decisions made during FEL and design. A well-defined project is executed with greater order and control. The quality of prior planning is also critical to execution success.

Commissioning, operation, and closure

Once construction is completed, the project goes through the commissioning phase, where systems are tested and adjusted to ensure proper operation.

Subsequently, the project enters operation, fulfilling its original purpose. Finally, closure is carried out, where results are documented and lessons learned are captured for future projects.

Renewable energy: projects that require total integration

Renewable energy projects are not simple systems. They involve multiple components that must function in a coordinated way: civil infrastructure, mechanical structures, electrical systems, automation, and environmental compliance must be integrated into a single solution.

As projects grow in scale and complexity, this integration becomes more demanding. It is not enough for each part to work separately; the entire system must operate coherently.

Interface management in projects

To manage these interactions between disciplines, interface management is used, which coordinates how they relate to each other. An interface is the point where two or more areas meet; proper management avoids conflicts, rework, and integration errors.

When implemented correctly, it allows the project to progress in an orderly manner. When not, complexity becomes difficult to control.

Tecnoconsult Group: a benchmark of best practices

Throughout this article, a key idea has been highlighted: the success of a project does not depend solely on execution, but on the rigor with which its phases are developed—from conceptualization to construction. Following best practices at each stage is not a methodological formality, but a necessary condition to reduce uncertainty, improve design quality, and avoid deviations in costs and timelines.

In this context, companies that structure their work aligned with these best practices become benchmarks within the sector. Tecnoconsult Group is an example of this, by organizing its services following the full logic of the project lifecycle, integrating disciplines and ensuring continuity between stages.

From the initial phases, its approach includes conceptual engineering, visualization, feasibility studies, and development of master plans, allowing a solid foundation to be built before moving forward. These stages are fundamental because they are where the problem is correctly defined and alternatives are evaluated with technical and economic criteria.

As the project evolves, Tecnoconsult develops the design phase through FEL (Front-End Loading) and FEED (Front-End Engineering Design), complemented by detailed engineering, cost estimation, and planning. This approach allows structuring the project more clearly, aligning disciplines, and reducing uncertainty before execution.

Process continuity is maintained during the procurement stage, covering all acquisition phases, ensuring coherence between design and selected equipment. Later, during execution, its participation in construction management—including supervision, cost control, material management, safety, and team coordination—ensures that what is built matches what was defined.

In renewable energy projects, where technical integration is especially critical, this way of working allows the project to evolve coherently from its initial definition to operation. In this sense, Tecnoconsult Group not only provides engineering services but also acts as a benchmark in the structured application of best practices throughout the project lifecycle.

Conclusions

Renewable energy projects involve a high level of technical complexity. It is not just about installing technology, but designing systems that work in an integrated way.

The Front End in engineering projects and FEED are the stages where the foundation of the project is built. Multidisciplinary engineering and interface management in EPC projects make it possible to transform an idea into a viable solution, because ultimately, the difference between a successful project and a problematic one lies not in how it is built, but in how it is defined from the beginning.

References

1. Front End Engineering Design | FEED | PIPING MANTRA | BASIC ENGINEERING. https://youtu.be/rkDHMRRrdEs