Most people think commissioning begins when equipment arrives onsite or when generators spin up for the first time. That’s wrong. Commissioning starts with Level 0: Concept & Design Readiness. If you skip this stage, you’re not moving faster, you’re embedding problems into the project that will explode later in cost, delay, and risk.

Why Level 0 Exists

The purpose of commissioning is simple: prove that a facility can do what the owner requires, under all conditions.

Level 0 is where that proof begins. It’s not about energizing hardware, it’s about validating the design before anything is built. Once steel is poured and systems are procured, every change is expensive. At Level 0, mistakes are still cheap to fix.

This stage eliminates the gap between what the owner thinks they’re getting and what the design team is actually delivering. Without it, you’re commissioning the wrong thing.

What Happens in Level 0

Level 0 is structured. It’s not a casual review; it’s commissioning the design itself.

• OPR vs. BoD Alignment The Owner’s Project Requirements (OPR) define the “why.” The Basis of Design (BoD) defines the “how.” They must align, line by line. If they don’t, the project starts with built-in conflict.
• Design Reviews That Test Reality This is where sequences of operation are challenged. Not just “does it work when everything is fine,” but:
• Operations at the Table The people who will live with the facility need to review it now. If the design ignores access, safety, or maintainability, those problems show up every day of operations.
• Risk Workshops Structured analysis exposes weaknesses early

The Exit Criteria

Level 0 is complete only when these exist, signed and aligned:

• OPR and BoD in agreement.
• Preliminary sequences of operation (SOO) tested against real-world failure scenarios.
• Risk register with owners and mitigation strategies.
• Acceptance criteria for what “done” means at turnover.

Anything less is unfinished commissioning.

Common Failures

Projects that stumble later almost always skipped or rushed Level 0. The patterns are predictable:

• Treating Level 0 as “optional.”
• Ignoring the operations team until the end.
• Doing superficial reviews that check boxes but don’t test reality.
• Letting designs drift from the OPR into “nice-to-have” features with no business value.

Why It Matters

Level 0 isn’t theory. It’s the stage that determines whether Levels 1–5 flow smoothly or turn into firefighting. Every issue caught here saves weeks later. Every risk mitigated here avoids costly redesigns under pressure.

Commissioning is about risk reduction, and the most leverage you’ll ever have is at Level 0.

The Bigger Picture

Level 0 doesn’t make headlines. There’s no noise, no load banks, no dramatic fault tests. Done right, it’s invisible. But it is the foundation.

Commissioning doesn’t start on Day 1 of construction. It starts on Day 1 of design. And Level 0 is where you prove that what you’re about to build is the right solution, for the right purpose, with the right safeguards.

Skip it, and you’re not saving time. You’re just guaranteeing pain later.

If you don’t have time to do it right, when will you have time to do it over? John Wooden

Closing Thought

Level 0 is where “doing it right” begins. Commissioning doesn’t start with load banks or black starts, it starts on paper, in design, where problems are still cheap to fix and clarity is still possible.

What do you think?

• Have you seen projects that skipped Level 0 and paid the price later?
• Or projects where a strong Level 0 saved months of pain downstream?