When the EU Emissions Trading System expanded its scope in 2023 and increased audit stringency for cement kilns above 500 tonnes per day clinker capacity, a multi-plant European cement producer operating seven kilns across four countries found that its existing maintenance documentation infrastructure could not produce the asset-level energy performance records required for verified compliance. The gap was not operational — kiln efficiency was within target — it was documentary. Maintenance records, fuel consumption logs, and asset condition data existed in separate systems across four national subsidiaries, none of which could be consolidated into the cross-plant format required by the EU ETS monitoring plan. Book a demo to see how Oxmaint structures EU ETS compliance documentation across multi-site cement portfolios.
Case Summary
A European multi-plant cement group deployed Oxmaint across seven kilns in four countries to consolidate asset condition records, kiln energy performance data, and maintenance audit trails into a single EU ETS-compliant documentation structure. The next annual EU ETS verification audit was completed in 3x less time than the previous cycle, with zero compliance findings. Cross-plant portfolio KPI reporting — previously assembled manually in 3 to 5 analyst days per reporting period — became a live dashboard updated automatically from work order and condition data across all sites.
3x
faster EU ETS verification audit completion versus prior annual cycle
0
compliance findings across all seven kilns at first post-deployment verification audit
6 wks
from deployment start to live cross-plant EU ETS dashboard across all four country operations
$420K
annual maintenance cost reduction across the portfolio at 12 months post-deployment
Background: The EU ETS Compliance Challenge for Multi-Plant Cement Groups
The EU Emissions Trading System requires cement producers to maintain verified records connecting kiln operating conditions, fuel consumption, clinker production volumes, and asset maintenance status into a continuous documented chain for each compliance period. For a single-plant operator, this is a documentation discipline problem. For a multi-plant group operating across multiple EU member states — each with national competent authority interpretation of the EU ETS implementing regulation — it becomes a data architecture problem.
This producer's seven kilns generated maintenance records in four different systems: a legacy CMMS at the German and Austrian plants, a homegrown spreadsheet-based PM system at the French subsidiary, SAP PM at the Polish operations, and paper-based inspection logs at two smaller plants acquired in 2021. Each system structured asset records, work order history, and inspection findings differently. When the EU ETS verifier requested consolidated asset condition records demonstrating that kiln maintenance status had not materially affected emission intensity during the compliance period, the compliance team had to manually extract, reformat, and reconcile data from all four systems — a process that took 18 analyst-days for the 2022 compliance cycle and still produced records that the verifier flagged as incomplete for two of the seven kilns.
01
Four Systems, No Common Data Structure
Asset records, work order history, and inspection logs structured differently in each national subsidiary's system. Cross-plant consolidation required manual export and reformatting per compliance cycle — 18 analyst-days for the 2022 audit.
02
Incomplete Audit Trails at Two Kilns
Paper-based inspection logs at two recently acquired plants lacked the timestamp and operator ID structure required for EU ETS verifier acceptance. Both kilns received compliance queries in the 2022 cycle that required additional evidence submissions.
03
No Real-Time Portfolio KPI Visibility
Group-level operations management had no consolidated view of kiln availability, PM compliance, or maintenance cost across the portfolio. Monthly KPI reports required 3 to 5 analyst-days of manual assembly and arrived 10 to 14 days after period-end.
04
CSRD Obligation on the Horizon
The Corporate Sustainability Reporting Directive requires asset lifecycle documentation and maintenance-related energy performance data beginning with the 2024 reporting year. The existing documentation infrastructure was not structured to satisfy CSRD asset reporting requirements without another manual consolidation exercise.
Why Oxmaint Was Selected Over Enterprise EAM Alternatives
The group's initial RFP shortlist included IBM Maximo, SAP EAM extension, and Infor EAM alongside Oxmaint. The evaluation criteria were dominated by three requirements: EU ETS documentation structure compatibility out of the box, cross-national multi-site deployment within the compliance window, and implementation timeline short enough to have the system operational before the 2023 verification cycle.
IBM Maximo and SAP EAM were both assessed as technically capable of satisfying the EU ETS documentation requirements — but only after custom configuration estimated at 12 to 16 months and consulting engagements sized at €800K to €1.2M. Neither timeline fit within the group's compliance window. Infor EAM was eliminated in the second round due to the absence of a native condition-based CapEx forecasting capability, which the group required for CSRD asset lifecycle reporting. Oxmaint was selected on the basis that EU ETS compliance documentation structure, multi-site cross-plant dashboards, and asset condition registry were all native at deployment — not post-configuration deliverables.
EU ETS Documentation Native
Timestamped inspection records, operator-attributed work orders, and asset condition documentation in the format required for EU ETS verifier submission — available at deployment, not after configuration.
Multi-Site Dashboard Across 4 Countries
Portfolio-level and site-level KPI dashboards from a single platform — each national subsidiary visible independently and consolidated at group level simultaneously, without requiring national IT integration projects.
6-Week Deployment Window
Compliance window required operational status before the 2023 EU ETS verification cycle. Oxmaint deployed across all seven kilns in six weeks using QR-based asset scanning — without an enterprise IT implementation engagement.
CSRD Asset Lifecycle Compatibility
RUL engine and condition-based CapEx forecasting aligned with the asset lifecycle documentation requirements of the Corporate Sustainability Reporting Directive — addressing the 2024 CSRD obligation in the same deployment.
Implementation: Six Weeks Across Seven Kilns in Four Countries
Deployment followed a structured four-phase approach that prioritised compliance documentation capability first, with PM scheduling and condition monitoring integration in subsequent phases. All seven kilns were producing EU ETS-compatible maintenance records within six weeks of deployment start.
Week 1–2
Asset Registry and Historical Data Import
Assets Registered
2,847
Across all seven kilns via QR-based field scanning — no manual data entry
Historical WO Import
36 months
Prior work order history imported from four legacy systems to establish MTBF baselines
Hierarchy Structure
5 levels
Portfolio to Component — kiln components independently registered per EU ETS asset boundary
Week 3–4
EU ETS Documentation Structure and PM Scheduling
Compliance Templates
47 configured
Inspection templates structured to EU ETS monitoring plan requirements per kiln
PM Tasks Activated
193 per site
Full PM schedule deployed per kiln — shift, weekly, monthly, and quarterly tiers
Operator Training
2 days per site
Mobile field access training — all shift operators across four countries
Week 5–6
Cross-Plant Dashboard and Condition Integration
Portfolio Dashboard
Live — Day 35
Group-level MTBF, PM compliance, and maintenance cost visible across all seven kilns
Vibration Systems
OPC-UA connected
Existing vibration monitoring hardware connected to Oxmaint at five of seven kiln sites
CSRD Reporting
Configured
Asset lifecycle documentation structured for 2024 CSRD reporting obligation
Month 4–6
EU ETS Verification Audit — First Post-Deployment Cycle
Audit Duration
6 days
vs 18 analyst-days for prior cycle — 3x reduction in compliance team time
Compliance Findings
Zero
No queries on incomplete records — first clean audit across all seven kilns
Verifier Assessment
Full conformity
Asset condition records, inspection timestamps, and corrective action trails all accepted without supplementary evidence requests
Results at 12 Months: Operational and Compliance Outcomes
The compliance documentation outcome was the primary project objective and was achieved at the first post-deployment verification audit. Operational outcomes — reduced unplanned downtime, improved PM compliance, and portfolio-level KPI visibility — materialised progressively over the subsequent 12 months as the PM schedule matured and condition monitoring data accumulated against asset records.
EU ETS Compliance
3x Faster Audit
Verification audit completed in 6 analyst-days versus 18 in the prior cycle. Zero compliance findings. All asset condition records, inspection audit trails, and corrective action documentation accepted by the verifier without supplementary evidence requests.
Unplanned Kiln Stops
-61%
Unplanned kiln stops across the seven-kiln portfolio reduced by 61% at 12 months, from a baseline average of 4.2 unplanned stops per kiln per year to 1.6.
PM Compliance Rate
88%
Risk-weighted PM compliance across the portfolio at 12 months, up from a baseline of 63% calculated from legacy system records at deployment. High-criticality kiln assets reached 94%.
Portfolio Reporting
Live Dashboard
Group KPI dashboard updated in real time from work order data across all four countries. Monthly reporting assembly time eliminated — from 3 to 5 analyst-days to zero.
Maintenance Cost
$420K Saved
Annual maintenance cost reduction across the portfolio — driven primarily by reduction in emergency repair premiums as planned maintenance ratio improved from 58% to 77% across all sites.
CSRD Readiness
2024 Ready
Asset lifecycle documentation and maintenance-related energy performance data structured for CSRD reporting — addressed within the same deployment scope without additional configuration.
Key Metrics: Before and After Oxmaint Deployment
| Metric |
Before Oxmaint |
After Oxmaint (12 months) |
| EU ETS audit preparation time |
18 analyst-days — manual export from four systems |
6 analyst-days — records available directly from Oxmaint |
| Compliance findings at verification |
2 kilns with incomplete records requiring supplementary evidence |
Zero findings across all seven kilns — full conformity |
| Monthly portfolio KPI report time |
3 to 5 analyst-days, delivered 10 to 14 days after period-end |
Live dashboard — updated in real time from all sites |
| Unplanned kiln stops (portfolio average) |
4.2 per kiln per year |
1.6 per kiln per year — 61% reduction |
| PM compliance rate (risk-weighted) |
63% portfolio average across legacy systems |
88% portfolio — 94% on high-criticality kiln assets |
| Planned maintenance ratio |
58% planned across portfolio |
77% planned — emergency repair share reduced |
| CSRD asset documentation readiness |
Not structured — estimated 6-month manual preparation |
Configured within deployment scope — 2024 ready |
EU ETS and CSRD Compliance Coverage by Region
| Region |
Applicable Frameworks |
Oxmaint Documentation Coverage |
| Germany / Austria |
EU ETS, CSRD, BetrSichV, BImSchG, TUV inspection |
Asset condition records, TUV-compatible inspection trails, EU ETS monitoring plan documentation |
| France |
EU ETS, CSRD, ICPE, Code du Travail, NF EN ISO |
ICPE site documentation structure, CSRD asset lifecycle records, EU ETS energy performance data |
| Poland |
EU ETS, CSRD, Polish Environmental Law, UDT inspection |
UDT inspection record structure, EU ETS compliance documentation, cross-plant portfolio consolidation |
| USA / Canada |
OSHA PSM, EPA MACT, Title V, CSA Z1000 |
Timestamped PM records, EPA-compatible KPI reporting, corrective action WO linkage |
| UAE / Saudi Arabia |
SASO, Vision 2030, Civil Defence codes |
Asset condition registry, multi-site KPI reporting for sovereign portfolio operators |
EU ETS, CSRD, and BetrSichV — One Platform, Every Framework.
Oxmaint generates compliant documentation for all five frameworks above from the same dashboard used for daily maintenance operations. No post-processing. No manual consolidation across national subsidiaries.
Perspective: What the Compliance Team Said
The 2022 verification cycle required three weeks of intensive preparation across four national compliance teams. We submitted records and still received queries on two sites. In 2023, after six months on Oxmaint, the verifier had everything they needed directly from our system exports. The audit was completed in six days and we had no findings. That is the outcome we needed.
Group Head of Environmental Compliance
European Multi-Plant Cement Producer
We were tracking kiln availability and maintenance cost across seven plants using monthly spreadsheet consolidations assembled by plant controllers. By the time the report arrived at group level it was two weeks old and you could not drill into any anomaly without calling the site. Now that data is live on the portfolio dashboard and I can see MTBF trend by kiln in real time. It has changed how we manage the portfolio operationally, not just for compliance.
VP of Operations
European Multi-Plant Cement Producer
Frequently Asked Questions
QHow does Oxmaint structure maintenance records to satisfy EU ETS verifier requirements specifically?
EU ETS verifiers require that maintenance records demonstrate the asset boundary as defined in the monitoring plan, that inspection activities are timestamped and attributed to a named responsible party, and that corrective actions resulting from inspection findings are documented and linked to the original inspection record. Oxmaint structures work orders with all three attributes natively — asset boundary from the registry hierarchy, timestamp and operator ID on every task completion, and corrective action work orders linked directly to the triggering inspection.
Book a demo to review the EU ETS documentation output format for your monitoring plan structure.
QCan Oxmaint consolidate records across plants operating in different EU member states with different national competent authority interpretations?
Yes. Oxmaint operates as a single multi-site platform where each plant's asset registry, work order records, and inspection documentation are maintained independently but accessible on a consolidated portfolio dashboard. National subsidiary compliance reports can be generated per site in the format required by each competent authority, while group-level reports consolidate across all sites. This was specifically tested in this case study across German, French, and Polish regulatory contexts.
QDoes the same deployment also address CSRD asset lifecycle documentation requirements for cement operations?
Yes. CSRD requires documented asset lifecycle information including maintenance history, condition assessment, and remaining service life projections for material assets. Oxmaint's asset condition registry and RUL engine produce this documentation as a standard output of the maintenance program — the CSRD asset data is captured as a by-product of the daily PM workflow, not as a separate reporting exercise.
Book a demo to review CSRD documentation outputs for your asset portfolio.
QHow was the six-week deployment timeline achieved across seven kilns in four countries?
Asset registry was built using Oxmaint's QR-based mobile scanning — plant operators scanned physical assets in the field during the first two weeks, eliminating the manual data entry phase that extends enterprise EAM deployments. Historical work order data was imported via CSV from the four legacy systems in parallel. EU ETS documentation templates were configured during weeks three and four, and the cross-plant dashboard went live in week five. No national IT integration projects were required.
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Achieve EU ETS Compliance Without the 18-Day Audit Preparation Cycle
Oxmaint structures maintenance records, asset condition documentation, and inspection audit trails in the format required by EU ETS verifiers and CSRD auditors — from the same platform your maintenance team uses for daily PM scheduling and work order management.
EU ETS Documentation
CSRD Asset Lifecycle
Multi-Site Portfolio Dashboard
6-Week Deployment
