Solar financial modeling software turns the bankable yield simulation into cashflow, IRR, NPV, and payback that closes the deal. The right tool ties yield to tariffs, supports loan/lease/PPA structures, and produces lender-ready outputs. This guide compares the 2026 options and explains why SurgePV consolidates the stack, alongside the broader solar design software landscape it sits inside.
Yield + cashflow + IRR + proposal in one workflow
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What Solar Financial Modeling Computes
Country Tariff Coverage in SurgePV
| Country | Tariff structures supported |
|---|---|
| India | PM Surya Ghar, state net metering, ToU |
| US | Federal ITC, state SRECs, net metering, ToU, ADRs |
| UK | SEG, legacy FiT, ToU |
| Germany | Einspeisevergütung, ToU |
| Australia | Net metering, FiT, ToU |
| EU general | National FiT and net metering |
| Latin America | Various national schemes |
For custom or exotic tariffs, manual inputs are supported.
What SurgePV Bundles With Financial Modelling
- 8,760-hour bankable yield as the input, the same output covered in our PV yield simulation software guide
- Country-specific tariff library
- Loan, lease, PPA structures
- Tax depreciation schedule
- OPEX assumptions by climate
- Cashflow, IRR, NPV, payback
- Sensitivity analysis
- PDF, XLSX, CSV export
- Financial summary embedded in branded solar proposals, the same output our solar proposal software comparison covers
All on every paid plan at $1,299 to $1,899 per user per year.
Financial Modelling Across Competing Tools
| Tool | Cashflow | IRR/NPV | Country tariffs | PPA/lease | Integrated with simulation |
|---|---|---|---|---|---|
| SurgePV | Yes | Yes | Global | Yes | Same project |
| Aurora Solar | Yes (Sales Mode) | Yes | US-leaning | Limited | Same project |
| HelioScope | Limited | Limited | Engineering focus | No | Separate model |
| PVsyst | Limited | Limited | Engineering focus | No | Separate model |
| Energy Toolbase | Yes | Yes | US-focused | Yes | Imports yield |
| HOMER | Yes | Yes | Global | Yes | Separate yield model |
| Sighten | Yes | Yes | US residential | Yes | Imports yield |
Real Example: 5 kW Residential in Pune
That payback math assumes a properly sized residential on-grid inverter hitting its rated efficiency band; undersizing or oversizing the inverter against the array shifts the IRR by a point or more.
Country tariffs, PPA structures, IRR, and proposal in one tool
SurgePV's financial modelling layer ships on every paid plan at $1,299 to $1,899 per user per year.
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Who Should Choose Each Tool
- Choose SurgePV for integrated yield + financial modelling + proposals in one workflow.
- Choose Aurora Sales Mode for US-residential financial modelling at the upper tier, though see our Aurora Solar alternative comparison first.
- Choose Energy Toolbase or Sighten for US-residential finance-only workflows where design happens elsewhere.
- Choose HOMER for off-grid, hybrid, and storage-heavy financial modelling.
Ready to close the deal with integrated finance?
SurgePV combines AI 3D, 8,760-hour shading, bankable yield, cashflow, IRR, NPV, and white-label proposals in one platform.
Book a Free DemoFrequently Asked Questions
What is solar financial modeling software?
Does SurgePV include financial modelling?
Can solar financial modeling software handle PPA contracts?
What tariffs does solar financial modeling software cover?
Is solar financial modeling software accurate enough for lender conversations?
Does solar financial modeling software include subsidy calculations?
Can I export financial model outputs for investor presentations?
Akash Hirapara CFO, Qbits Energy
CFO overseeing solar financing, procurement, and channel partner enablement at Qbits.