Quick answer: On a new body-shop production line for one of the largest electric vehicle manufacturers in the United States, we used Virtual Commissioning to cut the time from Power On to full production by 53% (25 weeks instead of 53), reduce on-site commissioning hours by 42% (13,423 hours instead of 23,058), and gain 28 weeks of production the line would not otherwise have had over its first six months.
The program
The scope was a new production line for a body shop, one of the highest-pressure environments in automotive manufacturing, where every hour of downtime during launch cascades directly into missed production targets. The client is one of the largest electric vehicle manufacturers in the United States, and the model applied across the program was Virtual Commissioning: validating PLC logic, robot programs, and full line sequences against a digital twin before a single machine was powered on.
Traditional commissioning on a program of comparable scope typically runs 53 to 60 weeks from Power On to full production. This program reached full production in 25 weeks.
The benefit, in numbers
- -53% time from Power On to full production: 25 weeks instead of 53
- -42% on-site commissioning hours: 13,423 hours instead of 23,058
- 28 weeks of production gained, reaching full output over six months earlier than the traditional model
- 3 vs 6 launch validation loops, with debugging moved off the line entirely
With Virtual Commissioning, PLC and robot software is validated against a digital twin before Power On. On this program, site work stopped being debugging and became verification: 9 PLCs and 111 robots reached 100% production by week 25, against the 53 to 60 weeks typical of the traditional model on comparable-scope programs.
What changes when validation happens before Power On
On a traditional launch, the first real test of the system is the system itself. Every PLC sequence, every robot path, every safety interlock gets tested for the first time with real equipment, real people, and a production schedule already running. Each error found this way triggers a full loop: stop the line, diagnose, fix the code, retest, and hope nothing else was hiding behind it.
On this program, that loop happened three times instead of six. The difference is where the errors were found. Instead of surfacing during on-site debugging, most of the logic issues, sequencing conflicts, and safety validation work were resolved earlier, in the digital twin, running against the same PLC programs and robot programs that would later run on the physical line. By the time the equipment was actually installed, on-site work shifted from troubleshooting to verification.
The ramp-up curve
| Milestone | Duration | On-site hours | Cumulative |
|---|---|---|---|
| Commissioning → SOP | 9 weeks | 9,537 h | week 9 |
| SOP → Handover | 4 weeks | 1,826 h | week 13 |
| Ramp-up to 100% production | 12 weeks | 2,060 h | week 25 |
Ramp-up to full production, by milestone.
Eighty-five percent of on-site hours were spent before SOP (Start of Production). Once the line reached SOP, the effort curve dropped sharply, because the software had already arrived validated rather than being debugged in real time against a live production schedule.
Where the time investment actually goes
Virtual Commissioning does not remove engineering hours from a project. It relocates them. The offline package on this program, software design, offline robot programming, digital-twin creation, and virtual commissioning support, totaled 8,522 hours of desk work, valued at €517k. That work ran in parallel with the mechanical build, consuming no line time at all.
This is the core mechanical shift behind every result in this case study. Instead of engineering hours competing with production hours on the same clock, they run side by side. The mechanical build proceeds on its own schedule, and the control software arrives at Power On already proven.
What this means beyond one production line
This program is not an isolated result. It reflects the same pattern we see across Virtual Commissioning engagements: when logic is validated before installation, on-site time shifts from discovery to confirmation, and the launch date stops depending on how many unknowns show up in week one. It is the same pattern behind the pains this approach solves on line launches generally.
For plant managers and project managers evaluating whether to bring Virtual Commissioning into their next line launch, the practical takeaway is not just the percentage improvement. It is the ramp-up curve itself: a front-loaded investment in offline validation, followed by a compressed, predictable path to full production, instead of an open-ended troubleshooting period with no fixed end date.
Frequently asked questions
What is Virtual Commissioning?
Virtual Commissioning is the practice of validating PLC logic, robot programs, and complete production line sequences against a digital twin before physical installation, so that errors are found and corrected in simulation rather than on the plant floor.
How much can Virtual Commissioning reduce commissioning time?
Results vary by program scope, but in this case study, time from Power On to full production dropped by 53%, and on-site commissioning hours dropped by 42%, compared with a traditional commissioning approach on a program of comparable scope.
Does Virtual Commissioning add engineering hours to a project?
It relocates engineering hours rather than adding net project time. In this program, 8,522 hours of offline software design, programming, and validation ran in parallel with the mechanical build, so the control software arrived at Power On already proven, instead of being debugged live against the production schedule.
Is Virtual Commissioning only relevant for automotive body shops?
Body shops are among the highest-pressure environments for launch schedules, which is why this case study focuses on one. The same validation approach applies to any production line where PLC logic, robot programs, and safety systems need to be proven before installation, across automotive, logistics, aerospace, and other high-precision manufacturing sectors.
If your next line launch needs to reach full production faster, with fewer surprises on-site, our team can walk you through how a Virtual Commissioning program would apply to your specific scope.