Solar and related electrical work should begin with the property's actual service, panel, loads, roof or site conditions and future equipment goals. A Hockinson proposal should separate generation, storage, service alteration, load management, structural attachment, roofing interfaces and utility coordination. Washington L&I explains electrical permit responsibility, while the building authority and serving utility have distinct review roles. Define those handoffs before equipment is ordered.
Document interval or billing data, service and panel ratings, calculated loads, future electrification, roof and structural conditions, equipment locations, one-line design, disconnects, grounding, rapid shutdown, permits, utility submission, inspections, commissioning, monitoring and closeout ownership.
Collect utility history, major equipment ratings and planned heating, vehicle charging or appliance changes. Record which loads may operate together and whether management is acceptable. A proposal based only on roof area can miss service constraints or oversize equipment relative to the owner's actual objectives.
Photograph labels, service size, meter arrangement, main disconnect, bus rating, breaker spaces, feeders, grounding and known alterations. The electrical contractor should define whether the design uses a breaker connection, supply-side method, service change or listed management equipment, with calculations and permit responsibility.
Record roof covering, age information if documented, deck or framing access, slopes, penetrations and planned replacement. Assign structural review when loading or attachment conditions warrant it. Define flashing, sealants, standoffs, walk paths, removal responsibility and roof-warranty effects before array layout is final.
List backed-up circuits, expected operating priorities, battery location, environmental conditions, clearances, disconnects and shutdown procedure. State what happens during an outage, after depletion and when grid service returns. Marketing capacity alone does not prove the selected loads or duration.
The design should identify conductors, raceways, grounding and bonding, overcurrent protection, disconnects, rapid-shutdown components and required labels. Specify accessible locations and who tests each safety function. Concealed routing and rooftop equipment should be photographed before closure or covering.
Washington L&I publishes electrical permit basics, while building and structural review can follow the property authority and interconnection follows the serving utility. Identify the applicant for each path, required documents, correction responses, inspection sequence, meter work and permission-to-operate milestone.
Record module, inverter, optimizer, battery, racking, monitoring and major balance-of-system models. If supply changes, require updated ratings, warranties, compatibility, layout and approval consequences before substitution. A similar nameplate wattage does not establish equivalent performance or serviceability.
Define attic, crawl, garage, exterior and roof access; occupant shutdown notice; trenching or wall openings; dust and weather protection; and restoration of roofing, siding, paint, landscaping and labels. Assign responsibility for moving stored items and repairing incidental finishes rather than leaving them outside the electrical number.
Test startup, production, communications, shutdown, disconnects, storage modes and backed-up circuits as applicable. Record settings, firmware, account ownership, alert routing and baseline operation. The owner should know which party handles equipment, network, utility and workmanship issues after turnover.
Keep the approved design, permits, corrections, inspection approval, utility permission, equipment serials, photographs, test results, monitoring credentials handoff, shutdown instructions and warranties. This record supports safe service, future roof work, troubleshooting and later electrical additions.
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Washington L&I states that most electrical work requires a permit and the person performing it is responsible for obtaining it.
Clark County publishes residential permit guidance for confirming structural and alteration review.
Washington L&I provides public contractor and tradesperson information.
| Finding | Design decision | Acceptance evidence |
|---|---|---|
| Adequate service and panel space | Dedicated breaker and approved interconnection | Inspection and commissioning records |
| Limited bus or service capacity | Load management, panel or service design | Load study and approved equipment ratings |
| Roof work is also planned | Coordinate roofing and attachment sequence | Flashing, structural and roof-warranty records |
| Storage or backup is included | Define backed-up loads and operating modes | Transfer, shutdown and functional test results |
Normalize site study, design, engineering, applications, permits, utility work, service or panel changes, modules, storage, racking, conductors, access, roof interfaces, restoration, inspections, commissioning, monitoring and closeout. State allowances and exclusions instead of relying on unsupported universal system pricing.
Washington L&I states the person performing the work is responsible for the electrical permit.
No; use service, bus, load and interconnection evidence to select the design.
Coordinate documented roof condition, remaining plans, attachments, removal costs and warranties before layout.
Only the circuits and operating modes explicitly included, designed and tested in the proposal.
After required permits, inspections, utility steps and commissioning are complete.
Approve updated models, ratings, compatibility, layout, warranties and approval effects in writing.
Test production, communications, safety shutdowns, disconnects, storage modes and monitoring as applicable.
Keep design, permits, inspection, utility approval, models, serials, tests, instructions and warranties.
Share utility history, panel photographs, roof information, outage goals and future equipment plans for comparable proposals.
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