Service in the cheapest window.
See a bearing or ignition problem coming, with remaining useful life per failure mode, check the spare part, and plan the stop for the lowest-price hours.
Stops planned around price and partsEnergy & utilities · Biogas & biomethane
Every biogas plant, compared like one.
Digesters, CHP engines, gas holders and upgrading units from different vendors, brought into one live twin per plant and one view of the fleet. AI flags drift and faults early, so you see where gas, power and uptime are lost, and when to act.
Same meaning at every plantSignal types, units, resolutions and timestamps aligned
Lean per plantRead-only, mapped once, reused at the next plant
Plant-specific SCADARead the S7 or other PLC underneath, or the SCADA’s own interface
Prices and weather in viewDay-ahead prices and forecasts next to plant state
01The plant
The whole plant in one twin, not one system at a time.
Built from the PLCs, SCADA and historians each plant already runs, including controllers more than 20 years old, with ERP data through an agreed export or API. Every plant’s SCADA is different, so we read the PLC directly, usually Siemens S7, or use the SCADA’s own OPC UA, database or export, and review each mapping with your team. We start from the SCADA’s own tag names and descriptions, so the mapping begins with what your team already calls things. The next plant reuses it. Nothing is installed on the PLCs.
Digesters
Feeding, temperature and gas yield per tonne of feedstock, so drift shows before output drops.
CHP engines
Output, vibration, temperatures and run hours, linked to service history and spare parts.
Gas handling & upgrading
Gas holder level, methane content, slip and upgrading availability, plant by plant.
PV, batteries & markets
PV output, battery state, day-ahead prices and weather forecasts, next to what each plant can deliver.
02One meaning
Three plants, three vendors, one answer.
Each plant keeps its own signal types, tag names, units and sampling rates. VeldtGraph maps them once, so “digester temperature at every plant” works without knowing a single tag name.
- Asset identityThe same digester, engine or gas holder, whichever system reports it.
- Measurement meaningWhat a tag measures, not just its address.
- Unit conversion°F, scaled integers and vendor units converted to one unit.
- ProvenanceEvery value keeps its original tag, raw value and conversion.
Digester temperature, three plants
The same measurement, reported three ways, becomes one comparable reading.
| Plant tag | Raw value | Conversion | Common value |
|---|---|---|---|
| DIG01_TEMP | 38.4 °C | none | 38.4 °C |
| T_Fermenter1 | 101.12 °F | (−32) × 5/9 | 38.4 °C |
| AI_0417 | 384 | × 0.1 | 38.4 °C |
Anaerobic digester temperaturePlants A, B and C
38.4 °C
03One record
Everything about one machine, on one record.
Operations, maintenance, security, emissions and prices on the asset itself, and the same record for every CHP at every plant.
One CHP, the whole picture
Example: CHP 1 at Site 07, as one asset record.
| View | What you see |
|---|---|
| Operations | 1.18 MW, bearing vibration 2.1 mm/s above baseline |
| Maintenance | Last service 1,840 h ago, 2 bearings in stock |
| Security | No unexpected connections to its controller |
| Emissions | CH₄ slip and CO₂e, traced to the analyzer |
| Price & weather | Cold front, €84/MWh day-ahead |
| Value at risk | ≈ €42k over 30 days |
Compared across the fleetSame record for every CHP, at every plant
Illustrative values.
04Decisions
From signal to a decision worth making.
Every recommendation shows the data behind it and its value in euros. Operators approve every action.
Catch drift before gas yield drops.
Anomaly detection on feeding, temperature and gas yield, compared with the plant’s own history and with similar plants in the fleet.
Process drift caught earlyFind the gas you are losing.
Bring analyzer readings, slip measurements and leak surveys into the twin, and rank repairs by the gas you could sell. Agricultural biogas plants measured in Denmark lost 2.4% of their methane on average (Scheutz & Fredenslund, 2019).
Repairs ranked by lost gasGenerate when it pays.
Plan CHP runs, gas storage, PV and batteries around day-ahead prices and weather, within each plant’s limits, decide when gas goes to the CHP and when to the upgrader, or feed the plan to your direct marketer.
Run plans weighed against price and wearSee which plants need you.
Rank every plant by value at risk, spot issues that repeat across plants, and roll out what works everywhere.
One ranked list across the fleetKeep biomethane on spec.
Track methane content and upgrading availability, and see what each stop costs in gas not injected.
Upgrading losses valued per plantStart with 1 to 3 plants.
Then roll the same definitions out across your fleet.
A focused first engagement, measured against your own baseline.
- We map the plants’ PLCs, SCADA, tags and data with your team.
- We agree one outcome and a baseline, for example CHP availability or methane loss.
- We connect read-only, check every signal against your HMI, then the same model covers the next plants.
First results in 2 to 4 weeks. You decide on rollout after you see them.