Residential

OverviewRooftop PV at volumeRoof & dronePlanes measured on the roofAttic & structureRafters recordedElectricalPanel and interconnectionDesign & engineeringModel to stamped set

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 dataShading analysisMove the sun yourselfCost calculatorWhat bad field data costs you

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Vanguard AccessInvite only · survey data portalScheduling & DispatchCrewLink · all verticals

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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Home  /  Solar site surveys

Solar site surveys · By location

Solar site surveys, state by state

The capture standard does not change at a state line. The code editions, the AHJ, the utility and the climate loads do. Pick a state for the local detail, with a source for every fact.

12States with local pages
15Metro pages
48 hrsSurvey to deliverable
Nationwide500+ technicians
Short answer

We run in-person solar site surveys nationwide: roof, attic and service panel in one visit for residential, and roof, structure and switchgear for commercial. Each state page below lists the electrical and building code editions, how permitting is split between cities and counties, the major utilities and their interconnection pages, and the climate factors that change what the survey has to catch.

States and metros

More states are being added. If yours is not here yet, we still survey there.

Arizona →

NEC set by AHJ · APS, SRP and TEP

California →

NEC 2023 · PG&E, SCE and SDG&E

Colorado →

NEC 2026 · Xcel Energy, Black Hills Energy and CSU

Florida →

NEC 2020 · FPL, Duke Energy Florida and TECO

Illinois →

NEC set by AHJ · ComEd and Ameren

Massachusetts →

NEC 2026 · Eversource and National Grid

Nevada →

NEC set by AHJ · NV Energy, NV Energy North and Boulder City

New Jersey →

NEC 2023 · PSE&G, JCP&L and ACE

New York →

NEC 2023 · Con Edison, PSEG LI and National Grid

North Carolina →

NEC 2017 · Duke Energy Carolinas, Duke Energy Progress and Dominion Energy NC

Texas →

NEC 2026 · CenterPoint, Oncor and AEP Texas

Utah →

NEC 2023 · RMP

What we capture on every survey

The same record in every state, so the design and the permit set are built on what the technician verified on site.

Roof and structure

  • Measured roof planes: pitch, azimuth, dimensions
  • Every penetration and obstruction, located
  • Rafter or truss size, spacing and span
  • Decking type and condition
  • Layer count at a cut edge
  • Setbacks and fire pathway constraints
  • Horizon shading capture per array area

Electrical and interconnection

  • Main breaker and bus bar rating, photographed separately
  • Meter location and configuration
  • Slot count: used, open, tandem, double-tapped
  • Available interconnection points
  • Existing loads and sub-panels
  • Conduit route, measured along the actual path
  • Grounding electrode and bonding path

Commercial buildings

  • Membrane type, age and condition, with drainage pattern
  • Bar joist depth, spacing and span
  • Deck type and gauge
  • Switchgear and available bus capacity
  • Access and lift constraints for the install crew

Every visit

  • Roof and electrical in one visit, no second trip
  • 48-hour turnaround from survey to deliverable
  • Photo documentation throughout
  • Permit sets available, stamped, 6 days from survey

Services and further reading

What each service delivers, wherever the site is.

From Field Notes

Talk through a site in 15 minutes

Tell us the states and AHJs you submit into, and we will tell you straight whether we fit.

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