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 heatDrone thermal inspectionEvery module, from the airElectroluminescenceCell-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

Company

All servicesAll Field NotesAboutBook a 15-min call
Commercial & industrial

Big roofs, real structural risk, coordination across trades

Assessment, engineering and the inspection work that keeps it producing. One technician on site, then stamped structural and electrical.

Beta access for select clients
48 hrsSurvey to deliverable
6 daysSurvey to permit-ready
50,000+Surveys delivered
7 yrsNationwide

Companies whose sites we’ve analyzed

Every Commercial & Industrial offering

Each one has its own page with the full detail.

Survey, design, then three inspections

Keep scrolling. One record, five outputs.

One partner from the first site visit to the last inspection, and the survey the design was built from is the same record the inspections are measured against.

01

On-site survey

A technician on the roof, inside the structure and in the electrical room. Bar joists, deck gauge, switchgear and access, captured in one visit.

02

Design & engineering

Array layout, structural and electrical engineering on the building as measured. Stamped and permit-ready six days from the survey.

03

Visual inspection

Full-array imagery at module resolution: soiling, physical damage, vegetation and mounting failures, located against the as-built.

04

Thermal inspection

Radiometric capture across every module. Hot cells, failed diodes, bad connections and dead optimizers show up as heat.

05

Electroluminescence

Current driven through the array so the cells emit infrared. Microcracks and inactive regions become visible.

At building scale the structural risk is real

A residential mistake costs you a truck roll. A commercial mistake costs you an engineering cycle, a crane day, or a roof warranty. The survey has to carry more weight because more is built on it.

1

Structure you cannot see

Bar joist depth, spacing and span, deck gauge and column lines. None of it is visible from above, and all of it decides the attachment.

2

Membrane and warranty

Condition, penetrations and drainage. Getting this wrong is not a design problem, it is a liability problem with the roofing manufacturer.

3

Switchgear reality

Available bus capacity and a real interconnection path, assessed in the electrical room rather than inferred from a one-line somebody drew years ago.

Survey, engineering, then inspection

Same scope as residential at building scale, plus the inspection work that keeps the asset producing after it is energised.

1. On-site technician survey

A technician is physically on the property, not reading it off imagery. On the roof for membrane condition, penetrations and drainage. Inside for the structural assessment: bar joist depth, spacing and span, deck gauge, column lines. In the electrical room for switchgear, available bus capacity and the interconnection path. Access and lift constraints documented for the install crew.

2. Engineering

Structural and electrical engineering off what was verified on site. Attachment design landed on the real framing. Permit sets stamped and sealed by a licensed professional engineer, structural and electrical, permit-ready six days from the survey.

3. Commissioning inspection

Aerial thermal and electroluminescence at energisation, so you have a baseline. Defects found at commissioning are the installer's to fix. Defects found in year three are yours.

4. Ongoing inspection

Periodic aerial thermal and module-level defect detection across the array. Detail on the inspection page.

What gets captured

Roof, structure and access

  • Membrane type, age and condition, with drainage pattern
  • Every existing penetration and curb, located
  • Bar joist depth, spacing and span
  • Deck type and gauge
  • Column lines and load paths
  • Parapet height and setback constraints
  • Crane and lift positions, with ground conditions
  • Roof access route and hatch or ladder constraints

Electrical and coordination

  • Switchgear rating and available bus capacity
  • Interconnection path, verified rather than assumed
  • Existing distribution and sub-panels
  • Conduit routing with measured runs
  • Utility service configuration and metering
  • Grounding and bonding
  • Trade coordination notes, mechanical and roofing conflicts
  • Photo documentation throughout

Where this is worth most

On a commercial roof the expensive failure is not a missed module. It is a structural assumption that survives into a stamped drawing and gets caught by a plan reviewer, or worse, by an inspector after the attachments are in.

Every rejection cause we see traces back to capture rather than drafting. The list is in what goes in a permit package. Adding storage adds a second electrical investigation and a dimensional rulebook, covered in what a battery adds to the site survey.

Bring us a building

Send a roof that gave you trouble and we will walk through what the survey should have caught.

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Book a 15-min call