Residential

OverviewRooftop PV at volumeRoof & dronePlanes measured on the roofAttic & structureRafters recordedElectricalPanel and interconnectionDesign & engineeringModel to stamped setHomeowners: free monitoringAlready have solar? Free reviewUnderperformance checkFree tool for homeowners

Commercial & Industrial

OverviewBig roofs, real structureOn-site surveyRoof, structure, switchgearDesign & engineeringPE stampedVisual inspectionModule resolutionThermal inspectionFaults as heatElectroluminescenceCell-level cracks

Utility-Scale

OverviewThousands of acresLiDAR topographyTerrain before earthworkLand surveyingBoundary and topographicConstruction monitoringProgress, measuredThermal & ELEvery string

Across every scale

Site surveysRoof and electrical, one visitPermitting & engineeringStamped plan setsInspectionAerial thermal and ELShading analysisSA, TOF and TSRFSurvey locationsState and metro guides

The platform

Platform overviewPortal, 3D models, live dataFeature guidesWho it serves and how it worksShading analysisMove the sun yourselfCost calculatorWhat bad field data costs you

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Vanguard AccessInvite only · survey data portal

Solar reference

Solar questions answeredResidential, commercial and utility-scaleSurvey methodologySources, measurements and limitsCompany factsOfficial services and capabilities

Field Notes · build vs. buy

What a survey really costsPart 01 · the full modelUtilization is the whole gamePart 02 · a real TuesdayThe break-even headcountWhen hiring pays offTwo technicians, two roofsVariance, measuredThe hybrid crewIn-house plus outsourced

Field Notes · reference

Site survey checklistBuilt backwards from reworkHow long a survey takesHour by hourDo panels need a permit?What goes in the packageStorage site surveysThe capture listCompare survey vendorsQuestions to ask any vendor

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Site surveys for installers & EPCs

Solar site surveys for installers & EPCs.

Roof geometry, obstructions, structure and the electrical service — captured on site in a single visit, by someone who is actually there. Discuss outsourced survey capacity for your US solar installation team.

For solar company decision-makers: review your project locations, survey scope and design handoff in 15 minutes.

Satellite imagery doesn’t know what’s in your attic

A remote measurement gets you a roof outline. It does not get you rafter spacing, a bus bar rating, or the vent stack sitting exactly where row three was going.

1

The second truck roll

Your crew arrives to install and instead spends the morning measuring what the survey should already have told them.

2

The redesign

One unmeasured obstruction turns a finished layout back into a draft — after the customer has already seen it.

3

The electrical surprise

A 100A panel where the design assumed 200A. Found on install day, it costs you the day.

What we capture

One visit. Both halves of the job.

Roof & structure

  • Measured roof planes — pitch, azimuth, dimensions
  • Every penetration and obstruction, located
  • Rafter/truss species, size, spacing and span
  • Decking type and condition
  • Setbacks and fire pathway constraints
  • Shading and access notes

Electrical

  • Main service panel — rating, bus bar, main breaker
  • Meter location and type
  • Available interconnection points
  • Existing loads and sub-panels
  • Conduit routing constraints
  • Photo documentation throughout

Planning outsourced solar site surveys?

Use the fit-check call to scope a real project or discuss recurring survey capacity. Bring your current capture checklist so we can compare the required field record with the work your design team needs.

Project coverage

Share the states and cities where you build, property types and expected monthly volume. Confirm technician availability, access requirements and scheduling for the actual sites before committing.

A clear capture brief

Review the roof, attic and electrical information your team requires. Agree how inaccessible areas, missing photos and questions from design will be handled.

The next handoff

Discuss the deliverables, point of contact and any plan-set or engineering support you need. Confirm scope, pricing and delivery timing for your engagement.

Evaluating providers? Use our solar survey vendor comparison questions and site survey checklist to prepare.

What makes a solar site survey useful to design?

A usable survey connects the roof layout, structure and electrical record. Define the capture brief before the visit so the office can distinguish measured data from an item that still needs review.

Roof and shade context

Roof planes, dimensions, pitch and obstructions support the layout. Tie photos to the same roof section as the measurements so a designer can follow the evidence.

Structure from inside

Attic access makes the framing record possible. Record the visible member dimensions, spacing and spans; flag inaccessible areas instead of filling gaps with assumptions.

Electrical and placement

Main breaker and bus ratings are separate readings. Record the service equipment, proposed equipment locations and actual route back to the array. See our electrical survey scope.

Reference: DOE solar planning guidance.

Solar site survey questions

What does a solar site survey include?

The residential scope covers roof measurements, attic and structure, electrical equipment and shading context. Agree on additional storage or project-specific requirements before the visit; an inaccessible area should be flagged for follow-up.

Can satellite imagery replace an on-site solar survey?

Imagery supports early roof screening and layout. It cannot document attic framing or service panel labels inside the property. Those records need on-site capture or another verified source.

How should the property be prepared for a survey?

Confirm safe access to the property, attic and electrical equipment, and share any access constraints ahead of time. Homeowners should leave equipment covers and electrical work to qualified personnel.

What happens after the site survey?

The captured record goes to design and engineering. The team checks missing or unclear items before preparing the layout and permit package. Survey completion does not itself grant permit or utility approval.

Looking for a solar site surveyor near you?

Start with the property address and the evidence your installer, designer or engineer needs. We provide in-person roof, attic and electrical capture for residential solar, with commercial and utility-scale scopes handled separately.

Find your city or community to review local survey-planning context. A city listing is a reference, not a branch office or a confirmed appointment. Ask us to confirm scope, technician availability and timing for the actual site.

Review the capture checklist · See the permitting and engineering handoff

Book a 15-minute survey fit-check

For decision-makers at US solar installers and EPCs with a site-survey, engineering or permitting need. Bring your project locations, monthly volume and required deliverables. We will review scope, coverage and next steps together.

Book a 15-minute fit-check

A time is reserved only after you complete Calendly and receive its confirmation. Homeowner questions? Visit our homeowner guides.

Book a 15-min call