Measure use and future loads
Collect representative bills and list planned vehicle charging, heat pumps, water heating or other electrification. Decide whether the goal is annual energy, capacity, resilience or a staged combination.
A solar-ready plan starts with actual usage, planned loads, roof condition, shade, service equipment and the serving utility. Document every permit, interconnection and commissioning responsibility before comparing equipment or projected production.
Require usage and load assumptions, shade and roof review, array layout, service and panel assessment, one-line diagram, equipment locations, permit and utility assignments, shutdown plan, inspections, commissioning, monitoring access, warranties and closeout records. Separate confirmed work from optional future capacity.
Collect representative bills and list planned vehicle charging, heat pumps, water heating or other electrification. Decide whether the goal is annual energy, capacity, resilience or a staged combination.
Record roofing type, condition, framing access and likely replacement horizon. Identify attachment, flashing and warranty responsibility before array layout is final.
Trees, hips, vents and access reduce usable roof area. Require orientation, tilt, shade and tree assumptions so production comparisons use the same inputs.
Document rating, disconnect, panel condition, spaces, grounding, bonding and load method. Do not assume every system needs a panel replacement or that existing equipment is adequate without review.
The City of Puyallup publishes permit resources and Washington L&I publishes electrical guidance. Confirm the property and assign applications, corrections, inspections and approval.
Utility interconnection is separate from construction permitting. Identify the meter's utility, application duties, equipment approvals and permission-to-operate milestone before energization.
Map inverter, battery, disconnect, meter and routes. Check working space, weather, noise, appearance, vehicle contact and maintenance access before procurement.
Test protective functions, shutdown, monitoring and relevant operating modes. Keep permits, utility approval, drawings, labels, serials, warranties, attachment photos and owner instructions.
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The city provides permit and inspection information for address-specific projects.
Washington L&I provides electrical licensing, permit and inspection resources.
The serving utility's interconnection process remains separate from city and electrical approvals.
| Constraint | Decision | Proof |
|---|---|---|
| Roof near replacement | Sequence roof and array | Attachment and warranty record |
| Seasonal shade | Model explicit shade inputs | Layout and production assumptions |
| Limited panel capacity | Assess load and options | Approved one-line |
| EV or heat pump planned | Model future-load case | Load calculation |
| Utility approval pending | Assign interconnection milestones | Permission record |
| Backup requested | List backed-up circuits | Commissioning test |
Separate design, permits, utility coordination, roof attachment, modules, inverter, service work, storage, routes, monitoring and closeout. Keep current incentives outside the construction comparison unless contract responsibility is explicit.
No. The decision depends on service condition, capacity, connection method and planned loads.
Assign city and electrical permit duties in writing and confirm the actual design with the authorities.
No. Interconnection and permission to operate are separate milestones.
Coordinate when roof condition and remaining life make later array removal foreseeable.
Use the same usage, roof, orientation, shade, tree and degradation assumptions.
Only when the design supports the defined loads and operating conditions; list backed-up circuits.
After required inspection, interconnection and permission-to-operate steps are complete.
Keep permits, approvals, drawings, labels, serials, warranties, monitoring and shutdown instructions.
Share bills, roof records, equipment photos and future loads so qualified contractors can compare the same system.
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