1. Data feasibility review
Review equipment context, available process tags, plant NOx measurement, data history, sampling frequency, timestamps, gaps, invalid records, and operating-range coverage.
Operating facilities
One-Unit NOx PEMS Pilot for turbines, boilers, CHP, and HRSG systems.
Zolena Lab helps operating facilities use existing process data and plant NOx measurements to evaluate whether a site-specific NOx predictive model can support internal emissions analysis, operating alerts, data-quality review, and pilot-stage decision-making.
Customer problem
Many facilities have useful emissions and operating data, but not a model-ready NOx evidence base.
Gas turbines, industrial boilers, reciprocating gas engines, CHP units, HRSG systems, and microgrid power assets often collect process tags, NOx instrument readings, CEMS data, SCADA records, and historian exports. The business question is whether those records are complete, time-aligned, and representative enough to support predictive NOx modeling.
The One-Unit NOx PEMS Pilot starts with one selected unit instead of attempting a plant-wide rollout. This keeps scope controlled while giving the owner a concrete view of data quality, model behavior, error, bias, operating-condition performance, and practical next steps.
Definition
What Zolena Lab means by a One-Unit NOx PEMS Pilot.
Zolena Lab defines a One-Unit NOx PEMS Pilot as a limited technical project for one operating combustion unit, using the customer's existing process data and same-period plant NOx measurements to test whether a site-specific predictive NOx model is feasible. The pilot is intended for model-readiness assessment, operating trend analysis, data-quality review, abnormal divergence screening, and internal missing-data examples. It is not, by itself, regulatory approval, CEMS replacement, RATA, certification, or a guarantee that model estimates can be used for official reporting.
Pilot workflow
What the pilot can include.
2. Cleaning and time alignment
Prepare a model-ready dataset by aligning operating parameters and NOx values, checking units, and separating obvious invalid or non-representative periods.
3. Facility-specific NOx model
Develop a predictive model for one selected combustion unit using same-period operating data and plant NOx instrument or CEMS data.
4. Held-out technical validation
Compare predicted NOx against measured NOx on data held out from model development, then report error, bias, and performance under different operating conditions.
5. Abnormal divergence review
Identify periods where model output and plant NOx data diverge unexpectedly. These findings can prompt instrument or operating-data review, but do not by themselves prove instrument drift.
6. Pilot report and next steps
Summarize feasibility, model behavior, limitations, examples of internal missing-data estimation, and whether a broader deployment, subscription, or integration step is justified.
Boundaries
This is a technical pilot, not an automatic compliance substitution.
Not CEMS replacement by default
The pilot does not automatically replace statutory CEMS, air permits, facility approval, or equipment manufacturer requirements.
Not certification
Technical validation is not regulatory approval, RATA, legal assurance, or formal third-party certification.
Reporting use is local
Any use of model estimates for official reporting must be separately confirmed under local regulations and facility-specific approval.
Start here
Submit your unit description, data coverage period and tag list for an initial feasibility review.
Do not send historian exports or confidential plant files until Zolena Lab confirms an appropriate transfer method.