ESG and sustainability reporting is a multi-system problem. The headline is owned by an ESG platform, the financial story sits in finance, the people story sits in HR, the supply-chain story sits in procurement. The asset-and-energy story — the largest part of Scope 1 and 2 for most asset-intensive operators, and a growing part of Scope 3 — is owned, or should be, by the asset management system. For most operators, that is IBM Maximo and the MAS suite around it.
This guide is for the asset management leader, the ESG lead, or the IT lead who has been asked to make Maximo a credible source for ESG reporting. It sets out where Maximo genuinely contributes, where the integration boundary sits, and what a defensible operating model looks like in practice.
What ESG reporting actually demands from the asset world
The reporting frameworks (CSRD in the EU, the UK’s SECR, ISSB / IFRS S2 globally, sector-specific overlays) all converge on a similar asset-side data set:
- Energy consumption by asset, by site and by energy carrier (electricity, gas, diesel, biofuels).
- Direct emissions (Scope 1) from owned and operated assets — combustion, fugitive, refrigerant.
- Indirect emissions from purchased energy (Scope 2), often with a market-based and a location-based view.
- Selected categories of Scope 3 — the maintenance and operations activities that generate emissions in the upstream and downstream supply chain.
- Capital project emissions (the embodied carbon in new and replacement assets).
- Asset life and end-of-life treatment, increasingly tied to circularity reporting.
- Water consumption and (in some sectors) waste streams against named assets.
Each of these has a natural home in Maximo, in MAS Monitor, or in the integration between the two. None of it lives easily in a spreadsheet that the ESG team rebuilds each quarter.
What Maximo contributes today, without anything new
Before any integration work, three things in a well-run Maximo estate already feed ESG reporting:
- The asset register. Energy and emissions roll up to assets and through the location hierarchy. If the register is complete and correctly hierarchical, the rollup is honest. If it is not, every figure downstream is a guess. The same data quality that makes Health meaningful makes ESG reporting credible.
- Maintenance work history. Every work order is, in part, an emissions event: parts, consumables, labour movement, equipment runtime. The data for Scope 3 maintenance emissions sits in the work history already.
- Inventory and parts catalogue. Items have suppliers, suppliers have origins, and parts have material composition. The Scope 3 upstream work begins with the catalogue, not with a separate database.
The honest position is: most operators have the basic data already and do not yet treat it as ESG-grade. The work is to lift it to ESG-grade, not to build a new system.
Where MAS Monitor and IoT change the picture
For energy-side reporting, the biggest single uplift is connecting energy meter and operating data into MAS through Monitor and the IoT layer.
What that looks like in practice:
- Sub-metering on energy carriers at site, building or process level, ingested through the historian and surfaced in Monitor.
- Operating telemetry on the largest energy-consuming assets — chillers, compressors, drives, kilns, boilers, large rotating equipment — so that consumption is attached to operating hours, load and asset condition.
- Continuous (rather than periodic) energy data, allowing ESG calculations to be auditable to a sub-monthly cadence rather than a quarterly invoice cadence.
The result is not a separate ESG system. It is the same Monitor stream that operations and reliability already use, with the energy-and-emissions view as one more lens on it.
Done well, this is one of the strongest paybacks in the MAS suite story today. It earns its place on data that is already operational, not on a separate carbon project.
Mapping work to Scope 1, 2, 3 — the practical view
The hardest part of ESG-from-Maximo is the mapping logic — turning operational data into emissions data with traceable factors. The defensible approach we run with customers:
Scope 1. Direct combustion and fugitives. The data lives in Maximo as fuel consumption captured against asset (e.g. diesel for a generator, gas for a boiler) and as refrigerant top-ups recorded against work orders. Apply published emission factors for the carrier and the geography — the UK government’s GHG conversion factors, EPA equivalents, sector overlays. Store the factor with the calculation, not just the result, so audit can re-trace.
Scope 2. Purchased electricity and heat. From sub-meter and supply data, with the market-based and location-based factor methodology applied per period. Where renewable contracts apply, the contract metadata sits in finance; the volume sits in Maximo / Monitor; the calculation joins the two.
Scope 3 (asset-relevant categories). Categories 1 (purchased goods and services), 4 (upstream transportation), 5 (waste), 11 (use of sold products, where applicable), 12 (end-of-life). Each one has a path through the Maximo data: purchased goods through the catalogue, transportation through vendor data, waste through work-order outputs, end-of-life through the asset disposal record. Each one has a typical estimation method and a published factor set.
The output is not a single emissions number. It is a per-asset, per-period, per-scope figure with the calculation traceable back to source operational data. That is what a CSRD assurance auditor will want to see.
The boundary with the ESG platform
The pattern that works is clear-boundary. Maximo and Monitor are the system of record for the asset-and-energy data. The ESG platform (Workiva, Sphera, Watershed, Persefoni, IBM Envizi, equivalents — the market is consolidating but still varied) is the system of record for the company-level disclosure, the framework mapping, the materiality assessment and the auditor view.
The integration is a defined export per period:
- Energy consumption per asset / site / period.
- Calculated Scope 1 and 2 emissions per asset / site / period, with the factors used.
- Maintenance and operations data feeding the relevant Scope 3 categories.
- Capital projects and disposals feeding embodied carbon and end-of-life modules.
- Reference data: asset hierarchy, location hierarchy, asset categorisation under the ESG taxonomy.
Done well, the ESG platform team stops re-keying spreadsheets and starts reviewing automatically-produced figures with full lineage back to the source asset and meter. That is the operating-model change that takes ESG reporting from a quarterly fire-drill to a normal management process.
Data quality is the gating condition
The same as everywhere else in this guide collection: data quality is the condition on every other step.
- The asset register has to be complete enough that the rollup is honest. Missing assets become missing emissions. Duplicate assets become double-counted emissions.
- Asset classification has to align with the ESG taxonomy in use — energy-consuming versus passive, owned versus leased, in the reporting boundary versus out.
- Meter data has to be tagged correctly to assets and locations. A sub-meter labelled “main panel B” against the wrong location is a Scope 2 figure that fails a five-minute audit.
- Refrigerant top-ups have to be captured on the work order, with grams (or pounds) and refrigerant type. This is a process discipline change, not a system change.
- Disposal and end-of-life work orders have to be coded as such, not as generic “decommissioning”. This usually requires a small failure-class change.
The Maximo health check guide covers this baseline work in general terms. For an ESG programme, it is the same baseline with one extra lens.
Sector overlays we see most often
- Utilities. Electricity and gas networks are themselves the operating boundary; emissions reporting maps to RIIO and equivalent regulatory frameworks. Renewables-heavy generators integrate Maximo with Renewables for portfolio carbon avoidance reporting.
- Transport and airports. Scope 1 from ground vehicles and Scope 2 from terminal operations are the headline, with Scope 3 from aircraft turnarounds an emerging asset-level conversation.
- Oil and gas. Methane emissions reporting (OGMP 2.0) is increasingly an asset-level requirement. Maximo is the only place that holds equipment-level inspection data at the necessary granularity. See the oil and gas sector page.
- Manufacturing and building materials. Embodied carbon in product, energy intensity per unit produced, water and waste — all roll up from operational data captured against assets.
Each of these is its own programme. Each starts from the same operating-model question: is Maximo our system of record for the asset-and-energy data, or is it a useful database we manually extract from?
How we engage
Most ESG-from-Maximo work is best done as two phases. Phase one is a data-readiness review: asset register, meter inventory, classification mapping, factor set selection, and a defined gap list. Phase two is the integration work to the ESG platform, with a defined per-period export. Both phases sit comfortably alongside the managed Maximo hosting and BPO services.
If you would like to talk through where your estate sits today, get in touch. The conversation usually starts with a single question — “what are we already reporting, and where does the data actually come from?” — and the next steps fall out from there.
Talk to the people who would actually deliver it
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