Infrastructure
Structural audit for concession, availability payment, and demand risk infrastructure models
The modelling risk
- Concession and availability payment models sculpt debt to a multi-decade cash flow profile, a structure that magnifies the impact of a single broken formula across the full concession term.
- The transition from construction-phase drawdown to steady-state operating cash flow is a distinct modelling risk period, and errors introduced there often stay undetected until a later refinancing or lender review surfaces them.
- A structural error in a debt-sculpting or circularity calculation can misstate debt sizing for the life of the facility, not just the current reporting period.
How OXXON tests it
The engine tests circularity, debt-sculpting formulas, and cross-sheet consistency directly against the model's own structure — see the Knowledge Centre article for the full mechanics.
Relevant modules
OXXON Audit
liveDeterministic structural verification for Excel financial models — a scored risk memo with evidenced findings, in seconds, not weeks.
Run it now →OXXON VERIFY
liveIndependent institutional verification: every figure within scope checked against the registered rule pack, every finding evidenced, nothing inferred.
Run it now →Run a structural check on a model in this sector.