How New Solar Entrepreneurs Can Go From Site Data to Signed Deal

A customer doesn't sign off on a kWh/year number. They sign off on a proposal: a generation report they can trust, a single line diagram their electrician can build from, a DCDB/ACDB panel schedule that passes inspection, a module table layout that fits the roof, and a quotation with real numbers on it.

I found solid evidence for all of this in the code — real SLD generation, DCDB/ACDB cable sizing with voltage-drop calculations, module table layout, and an EPC proposal/quotation generator with BOQ.

Here's what that actually looks like, deliverable by deliverable.

1. A Generation Report Built on Engineering-Grade Physics

Your generation estimate is the foundation everything else stands on — if a customer or a lender doesn't trust that number, nothing after it matters. The simulator doesn't cut corners to get there: it runs the same class of per-timestep physics used by industry-standard tools — real tracker rotation and backtracking geometry, Perez sky-diffuse transposition, bifacial rear-side irradiance modeling, and substring-level bypass-diode mismatch analysis — rather than a simplified monthly-average estimate.

2. A Single Line Diagram (SLD) You Don't Have to Draw Yourself

Ask any new entrepreneur what stalls their first few proposals, and "I don't have anyone who can draw an SLD" comes up constantly. The simulator generates a full single line diagram directly from your system configuration — module count, string layout, inverter selection, DCDB/AJB combiners, and ACDB — laid out in the same professional style customers and approval authorities expect to see.

Because the SLD is generated from the same project data as your generation report, you're not manually transferring numbers between a simulation output and a separate drawing tool and hoping they still match by the time you print it.

3. DCDB and ACDB Sizing — With the Actual Calculations Shown

This is where a lot of newcomer proposals fall apart under scrutiny: cable and combiner-box sizing that's guessed rather than calculated. For a new entrepreneur, this is the difference between handing a customer a number and handing them a number with the engineering behind it visible — which is exactly what gets asked for when a project moves toward DISCOM approval or a lender's technical review.

4. Module Table (Structure) Design

Before any of the electrical design matters, the physical layout has to fit the site. The simulator lays out your module table — the rows-by-columns grid of panels on a single mounting structure — to scale, with overall length and height dimensions, so you can confirm it fits the roof or ground-mount footprint you're actually working with before committing to a design. That table layout then feeds directly into the row-spacing and shading calculations elsewhere in the tool, so your physical design and your generation estimate are describing the same system.

5. A Real Proposal and Quotation — Not a Blank Template

This is the deliverable that actually closes deals. The simulator includes a dedicated EPC proposal and BOQ (Bill of Quantities) module: enter your customer's details, quotation number, and project type once, and it generates a formatted Solar PV Proposal document that pulls its numbers — system size, generation estimate, economics — directly from the simulation and economic-analysis tabs you already ran.

Having generation report, SLD, DCDB/ACDB sizing, table design, and proposal generation come out of one consistent workflow doesn't just save time — it removes the most common way early-stage proposals lose credibility: numbers that don't quite match across documents because they were typed in by hand more than once. Walking into your first few client meetings with a proposal that's internally consistent, professionally presented, and backed by real engineering calculations is a meaningfully different starting position than most newcomers get.

Every diagram and calculation described here — SLD, DCDB/ACDB sizing, table layout, and proposal generation — is derived from the same underlying project data as your generation simulation, so nothing has to be re-entered or reconciled by hand between them.