Top Project Finance Modelling Companies
Why The Model Matters
In project finance, the model is more than an Excel file. It is where the commercial structure, debt sizing, tariff logic, covenant package, reserve accounts, construction drawdown, operating assumptions, tax profile, and equity return all meet.
A weak model can kill a strong project. A clear model can expose the real financing question before lenders spend months circling a flawed case.
The best project finance modelling firms do three things well. They make the model readable, they make the logic auditable, and they make the debt case testable under downside scenarios.
For sponsors seeking non-recourse or limited-recourse debt, model quality is part of credit quality.
Our Shortlist
The right firm depends on the assignment. A sponsor building a bid model has different needs from a lender ordering a model audit, a public authority reviewing a PPP, or an investment committee testing debt capacity before mandate launch.
Based on public positioning, sector relevance, and practical project finance use cases, these are three firms we would put on the shortlist.
Operis
Best first call for serious project finance modelling, model audit, project finance advisory, and infrastructure transaction support.
Forvis Mazars
Strong fit for model audit, PPP/PFI model building, infrastructure finance, and projects needing institutional assurance.
F1F9
Useful for model build support, project finance modelling training, renewables modelling, and team capability development.
1. Operis
Operis is our first recommendation for project finance modelling. The reason is simple. It is a specialist project finance firm with deep roots in financial modelling, model audit, advisory, training, and modelling software.
Operis describes itself as a leading independent adviser in project finance and states that it has built its reputation around financial modelling since 1990. Its public materials also refer to more than 1,200 projects supported worldwide, with particular strength across infrastructure, renewables, digital assets, PPP/P3 and other non-recourse project finance situations.
For a sponsor, lender, infrastructure fund, or public-sector procurer, that matters. Project finance models are not generic corporate valuation models. They need construction-period logic, debt drawdown mechanics, sculpted repayment schedules, DSCR and LLCR outputs, reserve accounts, lock-up tests, refinancing cases, tax assumptions, and cash sweep behavior.
We would typically consider Operis where the transaction needs a lender-facing model, a model audit ahead of financial close, or an independent review of a complex project finance case.
2. Forvis Mazars
Forvis Mazars is a strong second name for project finance model audit and institutional model assurance.
Its financial modelling business describes a large dedicated model audit team with a particular focus on energy and infrastructure. Public materials state that the team has provided opinions on more than 2,000 projects. For model audit credibility, that is a serious signal.
Forvis Mazars also publishes a dedicated financial model building service for infrastructure finance, including PPP/PFI transactions, business case development, investment appraisal for large capital projects, corporate reporting, and working capital analysis.
This makes Forvis Mazars a practical option where the model has to withstand lender diligence, public-sector scrutiny, board review, or third-party audit expectations.
Best Fit
Model audit, infrastructure finance, PPP/PFI projects, lender review, and board-level model assurance.
Watch Point
Large advisory firms can be process-heavy. Scope, timelines, responsibility matrix, and review standard should be agreed before appointment.
3. F1F9
F1F9 is best known for financial modelling training and model-build discipline. It is especially useful where a sponsor, fund, developer, or advisory team needs to build internal modelling capability rather than outsource every model decision.
F1F9’s project finance modelling course is positioned around non-recourse infrastructure funding. Its curriculum covers construction-period modelling, operations-period modelling, senior debt repayment, debt sculpting, DSCR, LLCR, DSRA, financial statements, and scenario analysis.
The firm also states that its model-build team works with structured templates and standardized calculations developed across hundreds of models. That makes F1F9 relevant for teams that need clean, practical models with strong internal usability.
We would not treat F1F9 as a direct substitute for a lender-side model audit on every financial close. We would treat it as a strong option for model build, training, team capability, and sponsor-side modelling discipline.
How To Choose Between Them
The best choice depends on the project’s stage and the model’s role in the transaction.
Use Operis When
The project needs specialist project finance modelling, a lender-facing model, model audit, or independent advisory support around a complex infrastructure or energy transaction.
Use Forvis Mazars When
The transaction needs institutional model audit, infrastructure finance model building, PPP/PFI support, or assurance from a large advisory platform.
Use F1F9 When
The sponsor or advisory team needs strong internal modelling capability, project finance model training, model build support, or a practical framework for repeatable modelling work.
Use FG Capital Advisors When
The issue is wider than the spreadsheet. The mandate needs capital structure, financing logic, lender positioning, credit narrative, risk allocation, and transaction packaging before the model reaches capital providers.
What A Serious Project Finance Model Should Show
A credible project finance model should show more than base-case returns. It should explain how the project survives construction delay, cost overrun, lower generation or throughput, price stress, operating cost escalation, tax leakage, reserve requirements, covenant tightening, and refinancing uncertainty.
Sponsors often focus on IRR. Lenders focus on cash available for debt service, downside DSCR, tail, reserve accounts, completion risk, offtake reliability, construction contingency, and enforcement logic.
That is why the model has to match the financing strategy. A model built for an equity memo may be too thin for debt underwriting. A model built for debt sizing may be too rigid for bid strategy. A model built for internal budgeting may collapse under lender diligence.
The model should answer the question a credit committee actually asks. Where does repayment come from if the project performs below plan?
Model Build, Model Audit And Advisory Are Different Jobs
Sponsors sometimes use the phrase project finance modelling as if it describes one task. It usually describes several related assignments.
Model Build
Creating the project finance model from assumptions, contracts, technical inputs, financing terms, tax logic, and operating forecasts.
Model Audit
Reviewing formulas, logic, links, calculations, integrity checks, assumptions flow, outputs, and errors before a transaction signs or reaches financial close.
Debt Sizing Support
Testing gearing, tenor, margins, DSCR thresholds, reserve accounts, sculpted repayments, cash sweeps, and downside debt capacity.
Transaction Advisory
Connecting model outputs to financing strategy, lender appetite, risk allocation, term sheet negotiation, and capital stack design.
Practical Selection Criteria
Before appointing any modelling firm, sponsors should define the assignment clearly. The wrong scope can waste time and create false confidence.
- Decide whether the project needs model build, model audit, model repair, debt sizing, training, or transaction advisory.
- Confirm relevant sector experience, especially for renewables, power, transport, digital infrastructure, social infrastructure, mining, water, or PPP/P3 projects.
- Agree who owns assumptions, who owns formula logic, who signs off outputs, and who speaks to lenders.
- Require a clear handover process, version control, audit trail, sensitivity suite, and explanation of key outputs.
- Check whether the model can be maintained after financial close by the sponsor, asset manager, lender agent, or internal finance team.
Transaction Takeaway
Operis should be the first name on the shortlist for high-stakes project finance modelling and model audit. Forvis Mazars is a strong institutional choice where model assurance, PPP/PFI experience, and large-firm review standards matter. F1F9 is a practical choice for model build discipline, training, and internal capability.
The model firm should match the decision being made. A financial close model, lender audit model, bid model, sponsor case, and internal asset-management model each answer different questions.
Serious project finance work starts when the model, contracts, risk allocation, and capital structure tell the same story.
Sources And References
FAQ
What is the best company for project finance modelling?
For specialist project finance modelling and model audit, Operis is our first recommendation. It has a deep project finance focus and combines modelling, model audit, advisory, training, and specialist software.
Is Forvis Mazars good for project finance model audit?
Yes. Forvis Mazars has a dedicated financial model audit practice with a strong energy and infrastructure focus. It is a serious option where lenders, public authorities, boards, or investment committees require formal model assurance.
What is F1F9 best used for?
F1F9 is best used for project finance modelling training, internal team capability, model-build discipline, and sponsor-side modelling support. It is particularly useful when a team wants to understand and control its own models.
What should a project finance model include?
A project finance model should include construction costs, drawdown logic, sources and uses, revenues, operating costs, tax, debt sizing, DSCR, LLCR, reserve accounts, repayment profiles, distributions, sensitivities, and downside cases.
Should the model be built before approaching lenders?
A lender-ready model should usually be prepared before serious lender engagement. Early lender feedback can shape the structure, but a vague or incomplete model slows credit review and weakens the mandate.
