Voltaraj forecasts the spot market in 15-minute intervals, predicts what your PV plant will produce, and turns both into a financial model your lender can work with — DSCR, IRR, NPV, sensitivities.
Price forecasting — RO, BG, HU live · GR, PL on the roadmap · DE, IT under evaluation. Financial modelling — RO.
Every renewable investment comes down to the same three unknowns. Voltaraj was built to answer them — with numbers you can defend in a credit committee.
Probabilistic forecast of the day-ahead market at 15-minute resolution — 96 slots a day, with calibrated P10/P50/P90 bands, for tomorrow and the day after.
Two engines: a machine-learning model for plants with production history, and a physics engine for any greenfield site — from coordinates, tilt, azimuth, trackers, bifaciality.
A full financial model: DSCR, project and equity IRR, NPV, payback, tornado sensitivities — for PV, storage, or hybrid projects.
Most forecasts give you one line and hope. Voltaraj gives you a calibrated interval: the P10–P90 band is statistically guaranteed to cover the realised price at its stated rate — so you can plan for the bad day, not just the average one.
No production history? No problem. The physics engine computes hourly output from first principles — solar geometry, irradiance decomposition, panel temperature, trackers with backtracking, bifacial gain, inverter clipping. Got a bankable yield report? Voltaraj calibrates to it and matches its annual figure.
One engine for PV, storage, or hybrid: P&L, debt schedule with grace period and cash-sweep, minimum and average DSCR, project and equity IRR, NPV, payback, EBITDA margin. Plus a tornado chart showing which variable actually moves your NPV — so you know where to negotiate.
Every analysis exports as a formatted HTML report and a structured Excel workbook — in English and Romanian — with charts, assumptions, and the "where does 100 RON go" waterfall. Built to be read by a credit analyst, not just an engineer.
Forecasting is a probability business. Anyone selling you certainty is selling you a story. Here is exactly where our numbers stand — and where they don't.
Good enough to compare sites and kill bad projects early. For a figure you take to a bank, we calibrate against a formal yield report — and then we match it to ~1% on specific yield. Screening and bankability are different jobs; we tell you which one you're getting.
When it is, Voltaraj doesn't forecast blind — a source gate automatically switches to the weather-driven model. It's designed behaviour, and the report tells you which source was used. No silent degradation.
Our battery models use ~85% round-trip efficiency and a ~70% capture factor versus perfect hindsight — and a cycle only runs if the forecast spread beats the wear cost. Optimistic spreadsheets are how storage projects die.
The trading planner produces dispatch schedules, bid curves and aFRR thresholds as decision support. It does not place orders, and we don't claim it replaces your trader — it makes them faster and harder to surprise.
Forecasts on coupled markets are natively in euro. If you want the figure in local currency, we convert P50 and declare the rate, the date and the source — the local central bank, not a cross rate. The P10–P90 band stays in euro: the 80% coverage is measured there, and an interval multiplied by a spot rate no longer covers 80% in the other currency. By how much less depends on the currency’s volatility — and we have not measured it, so we do not claim it.
Project-finance desks can run Voltaraj entirely inside their own perimeter. The financial engine receives configuration objects and revenue figures, and returns DSCR / IRR / NPV — it never sees your client data, and your data never leaves the building.
The computation engine is stateless and session-safe — no shared global state, no cross-contamination between analyses, no access to the raw market-data warehouse.
TLS everywhere, bcrypt password hashing, TOTP two-factor authentication, HMAC-signed webhooks, Bearer-key API access, and a firewall that exposes exactly three ports.
Annual on-prem licence with support, model updates, and training for your credit analysts. Book a call →