Expert Commissioning Services
Commissioning mission critical facilities.
With precision, performance, and reliability.
At 2N Mission Critical, we deliver specialized design and commissioning services for electrical and mechanical systems supporting hyperscale data centers and other mission critical facilities, complemented by QA/QC solutions that ensure peak reliability and performance from construction through handover.
2N topology, both paths energised
Either path carries the full load alone
ACG member firm
2N Mission Critical Corp is a listed member firm of the AABC Commissioning Group, the certifying body for independent commissioning authorities.
ACG US member directoryCxA certified
Freddy A. Lee is listed in the ACG directory as a Certified Commissioning Authority (CxA), the credential owner specifications commonly require of a commissioning provider.
ACG US member directoryIndependent of design and install
We are engaged by the owner and we install nothing. With no equipment line, no installation arm and no design fee involved, our verification carries no conflict of interest.
What we verify
Every termination, every sequence, every failure mode, documented.
Electrical and mechanical
commissioning.
Both disciplines are delivered by a single commissioning authority, so the power path and the cooling path are verified against one coordinated plan.
Electrical
Power pathVerifying, testing and documenting the performance of electrical systems and components before they are placed in service.
Electrical systems are verified end to end, under load, and across the failure modes they are designed to withstand, before the facility is placed in service.
- Utility service and switchgear
- Generators and paralleling controls
- Automatic transfer switches
- UPS systems and battery plant
- PDUs, RPPs and busway
- Protective relaying and breaker settings
- Grounding and bonding
- EPMS integration and alarm verification
Mechanical
Cooling pathVerifying, testing and documenting the performance of mechanical systems and components before they are placed in service.
Cooling capacity, control response and failover behavior are verified while deficiencies can still be corrected without impacting the schedule.
- Chillers and chilled water plant
- CRAH, CRAC and fanwall units
- Pumps, primary and secondary loops
- Economizers and free cooling
- Containment and airflow verification
- Plumbing and pumping systems
- Fire protection systems
- BMS integration and sequence verification
The commissioning
process.
A systematic, quality-focused process that ensures building systems are designed, installed, tested, operated and maintained according to the owner's project requirements and the design intent.
- LEVEL0
Pre-Design and Planning
Establishing project goals, scope, roles and the Owner’s Project Requirements before design begins.
- Establish project goals
- Define scope and commissioning plan
- Assign roles and responsibilities
- Develop the Owner's Project Requirements (OPR)
- LEVEL1
Design Phase
Reviewing the design for compliance with the OPR and developing the commissioning specifications and test scripts.
- Review design documents for compliance with the OPR
- Provide design feedback and comment resolution
- Develop initial commissioning specifications
- Draft the test scripts the project will be held to
- LEVEL2
Construction and Installation
Confirming through submittal review and site observation that systems are installed as designed.
- Review submittals and shop drawings
- Conduct site observations
- Confirm systems are installed as designed
- Maintain the issues log from first observation
- LEVEL3
Pre-Functional Testing
Inspections and static tests confirming equipment is correctly installed, labeled, powered and ready for functional testing.
- Perform inspections and static tests
- Verify equipment is installed correctly
- Confirm labelling and terminations
- Confirm equipment is powered and ready for functional testing
- LEVEL4
Functional Performance Testing
Testing sequences of operation, control system response and alarms under simulated operating scenarios.
- Simulate system operation under multiple scenarios
- Test sequences of operation
- Verify control system response
- Verify alarms and annunciation
- LEVEL5
Integrated Systems Testing
Final verification of all systems operating together, including failure and recovery, followed by training and turnover.
- Final verification of entire systems working together
- Failure mode and recovery testing
- Training for operations staff
- Turnover to operations
Level 5
Everything running together, at load, with something deliberately going wrong.
Why choose 2N.
A commissioning authority is engaged to provide the owner with an independent, documented verification of the facility.
Principal level involvement
Both founders are directly involved in the projects we commission. The engineers reviewing your submittals and witnessing your tests are the engineers whose names are on the firm.
Independent of design and construction
As a commissioning authority engaged by the owner, we hold no equipment line, no installation arm and no design fee. Findings are reported without a conflict of interest.
Documented at every stage
Each phase produces a record: the commissioning plan, test scripts, issues log, results and the turnover documentation. The documentation is the deliverable.
Other 2N services.
In addition to commissioning, we provide the studies and site roles that mission critical projects require, delivered by the same engineering team.
Design
Tailored solutions for high-availability environments, addressing power, cooling, redundancy and scalability from topology selection through construction documents.
QA / QC
An independent review of materials, systems and workmanship while the work is still accessible and correctable.
Owner's Representative
A single party accountable to the owner, present on site and representing the owner’s interests throughout the project lifecycle.
Thermal Imaging
Infrared inspection performed under load identifies overloaded circuits, loose connections and equipment hotspots before they result in a failure.
Short Circuit Coordination Study
Establishes the available fault current throughout the system and confirms that equipment is rated to interrupt it safely.
Breaker Coordination Studies
Confirms selective coordination, so that a fault is cleared by the nearest upstream device and service to unaffected areas is maintained.
CFD Modeling
Models airflow, temperature distribution and cooling performance, including failure scenarios, before the space is built.
Not listedTell us what the project needs and we will scope it.
Where downtime is
not an option.
Commissioning ensures continuous power, cooling and control, safeguarding operations where downtime is not an option.
Confidence from day one
Commissioning confirms that systems meet design intent, industry standards and client requirements, delivering confidence and peak performance from day one.
Hidden failures, found early
By thoroughly testing every component, commissioning identifies and corrects hidden failures before they impact critical infrastructure.
Risk, validated down
Mission critical commissioning minimises operational and financial risk by validating that all systems function under real-world and worst-case conditions.
Hyperscale data centers
The primary focus of the practice.
Colocation facilities
Multi-tenant critical environments.
Hospitals
Where continuous systems are life safety.
Call centers
Continuous communication systems.
Stock exchanges
Where an outage is measured in transactions.
Flight control towers
Continuous communication and computer systems.
Why commissioning matters
Published industry data is consistent year over year, and it points to the systems commissioning exists to verify.
54%
of operators said power was the primary cause of their most recent impactful data center outage, the single largest category.
Uptime Institute Global Data Center Survey 2024, n=97
80%
said that outage would have been preventable with better management, processes or configuration.
Uptime Institute Global Data Center Survey 2024, n=97
57%
said their most recent major outage cost more than 100,000 dollars. One in five said it cost more than a million.
Uptime Institute Annual Outage Analysis 2026, reporting the 2025 survey
Uptime Institute's 2026 analysis identifies UPS systems, transfer switches and generators as the dominant failure points. These are the systems we verify, under load, across the failure modes they are designed to withstand.
Our home market
2N Mission Critical is based in Atlanta, currently the fastest growing data center construction market in North America.
2,882 MW
under construction in Atlanta, H1 2026, up 52.3% year over year
CBRE North America Data Center Trends H1 2026
No. 1
Atlanta overtook Northern Virginia as North America's top market for total data center construction for the first time in H1 2026
CBRE, H1 2026. Ranking is by capacity under construction
1%
Atlanta vacancy rate as the market ended March 2026
CBRE, reported by the Atlanta Journal-Constitution, June 2026
9,885 MW
of new energy approved for Georgia Power in December 2025, around 80% of it expected to serve data centers
Georgia Public Service Commission
Figures above are published by the named third parties and describe the Atlanta market, not 2N Mission Critical's portfolio.
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