String it with the losses in. Draw it from the same model.

Why do wire losses belong in the design tool?

Because a production figure that ignores the conductor run is a figure that gets revised later, in front of a customer. DC stringing in Solesca includes wire losses, so the yield reflects the wiring you intend to install rather than an idealised array.

When stringing lives in a separate tool, the losses get applied as a flat derate — a number somebody chose once and nobody has revisited. Doing it in the model turns an assumption back into a calculation.

What does the single-line diagram show?

The run from the modules through to the utility grid, drawn from the same model that produced the layout. It ships as part of a three-page package with the site plan and an equipment settings page carrying the equipment list, inverter settings, relay settings and notes.

It exports as a PDF plus a DXF folder with the images and one DXF file per page, so a reviewer marks up editable geometry rather than redrawing a flat sheet. The configurations the diagram covers are listed on the plan sets page.

• Plan sets and single-line diagrams

Does the equipment on the drawing match the equipment priced?

It should, and that is the argument for doing placement and the bill of materials in one place. AC equipment is positioned on the site plan, and the engineering-grade bill of materials comes off the same model, so the quantities in the estimate are the quantities in the design rather than a reconstruction of it.

This is the seam where most electrical rework starts: a drawing revised on Tuesday and a materials list assembled on Monday. One model removes the seam rather than managing it.

Who signs it, and how big can it get?

A licensed PE partner stamps the package, billed at market rate through SOL Credits — Solesca produces the drawings and does not stamp them. If your own firm holds the stamp, that route simply goes unused.

Stampable drawings export for systems up to three transformers, typically around 15 MW. Larger systems still export, carrying a disclaimer that marks them for reference only. Plan sets are an add-on to the Engineering License, licensed once for the organization rather than per package.

• Pricing

What electrical work does Solesca not do?

It does not run protection coordination, arc-flash or short-circuit studies. Solesca covers stringing, equipment placement, the bill of materials and the interconnection drawings; the studies that sit beyond those stay with the specialist tools and the engineer who signs them.

That line is worth knowing before a project rather than during one. Everything named on this page is scope Solesca carries end to end.

Does Solesca stringing account for wire losses?

Yes. DC stringing includes wire losses, so the yield figure reflects the wiring you will install.

What is in the interconnection package?

Three pages: a site plan showing modules, placed equipment, parcel boundaries and roads on satellite imagery; a single-line diagram from the modules to the utility grid; and an equipment settings page with the equipment list, inverter settings, relay settings and notes.

Do I need the Engineering License for a single-line diagram?

Yes. Plan sets and single-line diagrams are an add-on to the Engineering License, licensed per organization; the Design License cannot take it. Stamping is billed at market rate through SOL Credits.