Builder Process · Plan-Set Timing

When to Bring Solar Into the Plan Set

The point in the build where a builder loops us in changes what is possible. Bring solar in during the plan-set stage and it folds into the design with no rework. Wait until framing is done, and the same system may need a different roof plan or an electrical service upgrade. Here is how that timing actually plays out.

Phase 1

Why Timing Changes What Is Possible

A system sized during the plan-set stage gets designed around the actual roof plan before anything is locked in. As a result, that usually means no changes to structure, no changes to electrical rough-in, and no conflict with whatever WSEC compliance path is already chosen elsewhere in the plan. Added later, the same system has to work around decisions already poured into the framing and electrical rough-in instead of shaping them.

Phase 2

The Three Points Builders Typically Bring In Solar

Plan set / schematic stage: the ideal window. Solar ties directly into your WSEC credit strategy alongside envelope, HVAC, and water-heating choices, so nothing gets designed twice.

Rough-in stage: still workable. Conduit routing and panel penetrations need to be coordinated around the framing and electrical crew’s schedule, but a redesign is rarely required. See the Rough-In & Trim Guide →

Post-drywall or late in the build: the most limited stage. The roof plan and electrical service are already locked, so options narrow to whatever the existing structure can support. It is still possible, just with less flexibility on layout and, in some cases, on system size.

Phase 3

What We Need From You at the Plan-Set Stage

Nothing here needs to be final. Preliminary drawings are enough to start:

Phase 4

What a Late-Stage System Still Includes

Even coming in after framing, a solar system from Solphos still covers the full scope. What changes is flexibility, not scope:

Common Questions

When is the best time to add solar to a spec home’s plan set?

During the plan-set or schematic stage, before framing begins, tied directly to your WSEC credit strategy for the home.

Can solar still be added after framing is complete?

Yes, though the options narrow to whatever the existing roof plan and electrical service can support without a redesign.

Does bringing solar in early change the roof design?

Not usually. Solphos designs the array around your existing roof plan. Early timing just means we can flag roof-plane or shading issues before the plan set is finalized instead of after.

What do you need from preliminary or schematic plans to give guidance?

Roof and elevation drawings, even in draft form, plus your target WSEC credit level if you already have one in mind.

Does early solar planning affect the WSEC credit strategy?

Yes, in a good way. Sizing solar early lets you confirm the credit count before locking in other WSEC options like envelope or HVAC upgrades elsewhere in the plan set.