SOFTWARE
Wattvalio replaces the fragile spreadsheet with dedicated financial business plan software for solar and photovoltaic projects: generation, contracts, debt, taxes and valuation — recomputed in real time, from a single project to the consolidated portfolio.
Yield, degradation and probabilistic scenarios per asset.
Feed-in, PPA, merchant — and the contract-to-market switch at end of support.
SPV, senior debt, gearing, sculpted debt, DSCR/LLCR and covenants.
Corporate and production taxes modelled, not approximated.
DCF and sum-of-the-parts (NAV / SOTP), with an audited valuation bridge.
Holding, dividend up-streaming, shareholder loans, sell-down.
| Criterion | Spreadsheet | Wattvalio |
|---|---|---|
| Multi-project consolidation | Manual, fragile | Automatic, holding/SPV |
| Scenarios & sensitivities | Duplicated files | Isolated versions, live recompute |
| Traceability | None | Full audit trail |
| Security & rights | Shared file | Per-project roles, multi-tenant |
| Due diligence | Formula-error risk | Figures justifiable line by line |
Detailed comparison (12 criteria, including where Excel remains the right choice): Wattvalio vs Excel.
To estimate returns quickly, use the solar ROI calculator; for the underlying model structure, see the photovoltaic financial model.
Excel stays workable for a single project, but becomes fragile and hard to audit as soon as you consolidate several assets, run scenarios or track versions. Dedicated software recomputes in real time, isolates each scenario, keeps a full audit trail and secures access rights — decisive advantages in due diligence.
Yes. Wattvalio models ground-mount and rooftop photovoltaics, self-consumption, agrivoltaics, as well as wind and battery storage (BESS), from a single project to the consolidated portfolio.
Project and equity IRR, NPV, DSCR, LLCR, LCOE, MOIC, gearing, EBITDA and margins, plus DCF and NAV valuation — at a level of precision suited to presenting to a bank or an investment committee.
We set up your organisation and invite you.