Strengthen your position for FID.
Investing & Bankability
Whether you're raising debt or underwriting an acquisition, Catalyst turns your BESS model into documentation that holds up to independent scrutiny - every assumption traceable, every output explainable.
Trusted by leading lenders, advisers and investment teams
The Problem
Deals die, if revenue calculations are not trustworthy.
Financing rounds and acquisitions rarely fail because the underlying project is bad. They stall because the model behind it is opaque: undocumented assumptions, unreproducible scenarios, a black box that raises more questions than it answers. Traditional models were built for internal decision-making, not for the structured scrutiny of a credit committee, an investment committee, or a co-investor's technical advisor. Every unanswerable question in that room costs weeks - and sometimes the deal.
The Solution
Every Assumption Traceable, Every Output Defensible
Catalyst generates fully traceable calculations from a physics-based model - from input assumptions through dispatch optimization to the final DSCR. No black-box AI: every calculation step is transparent and verifiable by an independent technical advisor, whether that advisor works for a bank, an LP, or your own investment committee.
Bankability at Co-Location
Bankability at the shared connection.
Lenders don't underwrite a point estimate - they underwrite the downside case. Co-located storage doesn't just add upside; in the modelled scenarios it closes the gap between the worst case and the return hurdle, which is what actually moves a project from marginal to financeable.
Example Results achieved with Catalyst
5 of 5
Downside coverage
Forward-price scenarios clearing the return hurdle once storage is added - vs. 3 of 5 for the underlying wind asset alone. Fluence case study.
+1.0pp
IRR floor lift
Minimum modelled IRR raised by adding co-located storage, across every scenario. Fluence case study.
125
Stress-tested sizing
Configurations swept to find sizing that holds up across price scenarios, not just the base case.
Configurations
Exact Results for Every Project Setup
Most Frequently Modelled
A Financing Topic, Not Just a Technical One
Co-Location financing.
Lenders underwriting a co-located project can't evaluate the battery and the renewable asset in isolation - the two share a connection, and often a revenue stream. Catalyst models them jointly, so the financing case reflects how the assets actually interact: what the battery adds on top of the renewable asset alone, and how that changes the downside case a lender is actually pricing.
Steps to the Bankability Report
Site & connection data
Physics-based model run
Sensitivity & stress test
Lender-ready output
The Market
Getting to FID Is Getting Harder, Not Easier
Lender trust is real - and uneven
Every lender evaluates third-party models differently - some move fast with the right documentation, others require deeper validation. Know which conversation you're walking into.
Underwriting complexity is rising
Co-location, hybrid revenue stacks, and shifting regulation (e.g. EEG 2027 CFDs) make standalone spreadsheet underwriting error-prone.
Markets shift faster than models get rebuilt
Regulatory and price-environment changes mean static models go stale. Reforecasting shouldn't mean starting over.
The Platform
Catalyst - techno-economic BESS modeling.
Purpose-built for battery storage. All revenue streams, physics-based degradation, and auditable outputs - in one consistent model.
Multi-Market
FCR · aFRR · DA · Intraday · EEG
Variability
Parametric scenarios per run
Auditability
Bankable, verifiable outputs
Traceability
Every dispatch interval traceable
Key Features
For teams that need pipeline depth with consistent methodology.
Catalyst was built with the requirements of project finance and investment underwriting in mind. Every model output is structured so financing partners can trace each calculation step - from input assumptions through dispatch optimization to the final DSCR - and sensitivity analyses can mirror lender- or LP-specific stress scenarios, whether you're reviewing one asset or an entire portfolio.
Auditable Documentation
Catalyst outputs are used directly as appendices for financing documents and investment memos - no manual preparation or post-processing.
DSCR & Risk Sensitivities
Debt Service Coverage Ratio over the full project lifetime, plus IRR sensitivity to market assumptions, regulatory exposure (FCAs, grid fees), and technical degradation - under stress scenarios lenders or LPs define themselves.
Reforecasting Without Rebuilding
Update projections quickly when regulation, pricing, or competitive dynamics shift - without re-running the model from scratch.
Underwriting Depth for Complex Assets
Standalone BESS, green storage, or co-location hybrid - Catalyst models the difference in revenue stack and risk profile, not an approximation.
From BESS Model to Lender & Investment Committee Report
The gap between an internal feasibility study and a bankable, investable model is often where BESS projects get stuck. Catalyst closes this gap with documentation that serves both purposes: analytically rigorous enough for internal decision-making, transparent enough for external review - from initial term sheet discussions to final credit or investment committee approval.
Financing Document Generation
Catalyst outputs form the analytical basis for teasers, term sheets, and financial models - in auditable quality.
Open Documentation
All model assumptions and results are fully documented and available on request - nothing hidden, nothing to reconstruct after the fact.
Due Diligence Support
We support your team directly in the dialogue with financing partners - clarifying assumptions and answering technical questions as they come up.
Lender & LP Stress Tests
Simulate the requirements of financing partners or investment committees: custom price paths, conservative degradation, varying utilization.
Bankability Certificates
A standardized, independently verifiable output that documents feasibility in a format built for lender review.
Consistency Across the Portfolio
The same modelling methodology for every asset - comparable, auditable, ready for LP reports and investment committee review, whether the portfolio is 1 asset or 50.
Free Download
The bankability requirements checklist
What lenders and investment committees ask for before they'll rely on a BESS model - sensitivity ranges, assumption traceability, and what counts as audit-ready.
This resource is currently in preparation.
Next Step
The strategic foundation for your next FID.
Discover how Catalyst shortens due diligence and strengthens your position - with banks, with LPs, with your own investment committee.