Designer Studio · studio.voltarasystems.net
A design studio a credit committee can read.
studio.voltarasystems.net is a 20-tab design environment that simulates all 8,760 hours of the meteorological year and writes the result up as a study a financier can interrogate — P50 and P90 yield with documented uncertainty, a 25-year cash flow, and every assumption stated on the page.
Book a demo Buy a single bankable study — $29–39
No free trial — pay-per-study is the on-ramp. Demos are founder-led.
§01 · HERITAGE
Before it was software, it was a Cairo engineering workbook.
The studio began as the founder’s working calculation set — the Cairo engineering workbook used on 2.5+ GW of Benban-financed projects. What ships today is that workbook, productised: the same physics, the same conservatism, the same habit of showing its working.
And it is held to its own history: every release is regression-gated to within ±0.5% of that validated baseline. New capability can extend the model — it cannot quietly move the numbers.
- 2.5+ GW Benban-financed project heritage
- ±0.5% Release regression gate vs the validated baseline
- 20 tabs One design environment, intake to outputs
§02 · THE PHYSICS
Hour-by-hour physics, not a rule-of-thumb multiplier
A yield figure is only as bankable as the model underneath it. The studio simulates the year hour by hour instead of stretching a monthly average over a calendar:
- PVGIS typical meteorological year — all 8,760 hours simulated, so seasonal and daily behaviour is computed, not assumed.
- A full hourly shading matrix — obstructions cost specific hours on specific days, and the model charges them exactly where they fall.
- Bypass-diode mismatch modelling (Deline 2013) — partial shade is resolved at the submodule level rather than smeared into a flat derate.
- String auto-balancing — strings stay inside inverter operating windows as the layout changes, without manual re-stringing.
- A 3D roof scene — the array you sell is the array you simulated, on the geometry of the actual roof.
§03 · OPTIMIZATION
Name the IRR you need. It finds the design.
Most tools make you guess a layout and then tell you its return. The target-IRR optimizer works in the other direction: state the return the project must clear, and it searches the layout space for configurations that get there.
- A 432-trial sweep across tilt, azimuth and row spacing — a systematic search of the layout space, not a single hand-picked guess.
- Trials are scored against the target return, so the recommendation is the design that clears the hurdle — not the one that merely looked right.
- The output is a defensible answer to the question an investment committee actually asks: does this design clear the rate?
§04 · THE ECONOMICS
Twenty-five years of cash flow, on the client’s actual tariff
The financial model starts from how the client actually consumes and what they actually pay — not a generic per-kWh guess:
- Load analysis from whichever input the client can produce — a flat monthly bill or a full 12-month consumption profile.
- Jurisdiction tariffs, so the savings line is computed against the rates the client is billed under.
- 25-year NPV, IRR and payback — the full ownership horizon, with the assumptions stated where a reviewer can find them.
§05 · THE OUTPUTS
One design, four documents
A finished design produces the full document set — for the bank, the approvals process, procurement and the person signing:
10-section bankable feasibility PDF
IEC 61724-1 performance methodology, P50/P90 yield with documented uncertainty — built to be read, and defended, in front of a financier.
Engineering SLD & permit package
The single-line diagram plus the filings the approvals process asks for — DISCO net-metering and NREA paperwork, generated from the design itself.
Costed BOM
The bill of materials, priced — so what procurement orders is what engineering simulated.
Client one-pager
The plain-language summary for the person signing, distilled from the same numbers.
§06 · THE EQUIPMENT CATALOG
Designed from procurable hardware
A design is only buildable if its components are procurable. The studio designs from a curated equipment catalog — with a CEC top-200 matcher for cross-checking selections against the CEC equipment lists — rather than free-text part names.
16
panels in the catalog
18
inverters in the catalog
14
batteries in the catalog
200
CEC top-200 matcher
§07 · BANKABILITY, DONE HONESTLY
A methodology a credit committee can read.
Our feasibility output follows the IEC 61724-1 performance methodology, reporting P50 and P90 yield with documented uncertainty — validated for commercial bank-grade pre-feasibility. The numbers are traceable, the assumptions are stated, and the document is built to be defended in front of a financier.
Plainly stated: Voltara produces bankable feasibility studies on a documented methodology. Independent third-party tool certification (e.g. TÜV / DNV) and named-bank acceptance letters are on our roadmap, not claimed today.
- IEC 61724-1 Performance methodology
- P50 / P90 Yield with documented σ
- 8,760 h Hourly shading model
- 10-section Bankable feasibility PDF
§08 · INTO THE PIPELINE
Designs do not dead-end in a PDF.
“Send to CRM” lands the proposal PDF, the SLD, the costed BOM and a design snapshot straight on the lead. Sales reviews a diff banner and accepts or rejects the engineer’s refined values; when the deal is Won, the platform creates the project with the artifacts attached. The study you defended at credit committee is the file the site team builds from.
Run your next feasibility study through it.
Demos are founder-led — bring a real site and we will design it live. Or skip the call entirely: a single bankable study is $29–39, with nothing else to set up.
Book a demo Buy a single study — see pricing
The studio ships in every tier, from Estimate at $199/mo. There is no free trial — pay-per-study is the on-ramp.