Solar Financial Modeling Software for Cash Flow and Investment Review
Connect modeled energy production with cash purchase, loan, lease, and PPA assumptions. Calculate IRR, NPV, and payback, then carry the configured results into a proposal for stakeholder review.
P50/P90
Yield scenarios
IRR
Return modeling
NPV
Cash-flow analysis
LCOE
Cost-of-energy modeling
Energy-Yield Scenarios for Project Review
Start with production estimates from solar yield simulation, then examine how weather, system specifications, and configured losses affect projected cash flow. SurgePV supports P50/P75/P90 reporting workflows; accuracy and fitness depend on input quality, configuration, and independent review.
P50/P75/P90 Reports
Probabilistic energy-yield scenarios with stated assumptions for review by project stakeholders.
Weather Data Integration
TMY data from global weather databases for location-specific accuracy. Covers residential rooftops to utility-scale ground mounts.
Loss Modeling & Monthly Breakdown
Complete loss chain including soiling, mismatch, wiring, temperature, degradation, and inverter clipping - with month-by-month production forecasts.


Compare Financial Scenarios and Their Assumptions
Calculate ROI, IRR, NPV, and payback from configured project assumptions. Model tariff structures, incentives, and solar financing options, then present the results with their assumptions. Try the solar savings calculator.
ROI & IRR Calculations
Return-on-investment and internal-rate-of-return calculations based on configured inputs. Use the payback period calculator or explore solar panel ROI in Italy for an example workflow.
Tariff-Based Savings
Model net metering, time-of-use rates, and feed-in tariffs using validated local inputs.
Financing Comparisons
Compare cash, loan, lease, and PPA options side-by-side with customizable terms and escalation factors.
Multi-Currency Reports for Global Projects
Configure financial reports and proposals with supported currencies, tariff inputs, and incentive assumptions. Verify local structures and calculation methods before relying on an output. See the solar financing tool evaluation guide.
Tariffs
Configurable tariff and incentive assumptions
Multi FX
EUR, USD, AED, GBP and more — calculate cost per watt in any currency
Branded
White-label proposals with your logo
Instant
Branded PDF proposal export

Evidence-first evaluation
Evaluate SurgePV with your own project
SurgePV does not publish customer names, quotations, or performance outcomes without retained consent and substantiation. Use a representative project during a guided demonstration and validate workflow, outputs, assumptions, and fit against your own requirements.
What is a bankable solar energy report?
A finance-oriented solar energy report helps lenders and investors review project risk and expected returns. It may include P50/P90 yield scenarios, weather assumptions, performance models, and loss budgets. Each stakeholder determines whether a report satisfies its requirements.
What do P50 and P90 mean in solar energy modeling?
P50 is the median annual energy yield — the amount the system is expected to produce 50% of the time. P90 is the conservative estimate — the yield exceeded 90% of the time. Lenders typically require P90 reports to ensure debt coverage even in low-production years. SurgePV generates both from shading analysis and weather data automatically.
What financial metrics do solar investors look for?
Solar investors focus on IRR (Internal Rate of Return), NPV (Net Present Value), payback period, and LCOE (Levelized Cost of Energy). SurgePV calculates all of these from the system design and feeds them directly into the proposal — no spreadsheets or manual calculations needed.
Frequently Asked Questions
How accurate are the energy yield forecasts?
Accuracy depends on weather data, equipment inputs, geometry, shading, loss assumptions, configuration, and review. Test representative projects against your accepted reference method before relying on results.
Can I model different financing structures?
Yes. SurgePV supports cash purchase, loan, lease, and PPA financial models with fully customizable terms, interest rates, and escalation factors. Compare all structures side-by-side in one proposal.
Do banks accept SurgePV financial reports?
Acceptance is determined by each lender, investor, and due-diligence process. SurgePV supports P50/P90 and financial-modeling workflows but does not guarantee stakeholder acceptance.
Does it support international tariff structures?
SurgePV supports configurable currency, tariff, and incentive assumptions. Confirm currently supported structures and validate local inputs for the target market during implementation.
How accurate is SurgePV compared to PVsyst?
Run the same representative project with aligned weather data, equipment parameters, geometry, losses, and uncertainty assumptions. Document differences and have the responsible reviewer decide which workflow and output are suitable.
What financial metrics does SurgePV calculate?
SurgePV calculates IRR, NPV, payback period, LCOE, and cash-flow projections for cash purchase, loan, lease, and PPA structures. All metrics are generated from the system design and fed directly into the proposal for client and investor presentation.
Design More. Sell More. Build More.
See how SurgePV connects solar design, simulation, financial analysis, and proposals in one workflow.