Answer first: do not restart from appearance or app output
After flooding affects a home with solar, keep away from damaged or potentially energized equipment and obtain qualified assessment before any attempt to return affected equipment to service. Identify the actual exposure, complete equipment set and applicable manufacturer instructions. A dry enclosure, sunny roof or apparent app production is not electrical or structural clearance. If there is smoke, arcing, a burning odor or an immediate threat, move away and contact the appropriate emergency services. Do not approach for photographs or operate switches to investigate.
This is a homeowner service-decision framework, not a restart sequence. Roof work, live-DC equipment, inverters, batteries, wiring and electrical testing belong with qualified professionals. Do not open, wash, heat or try to dry electrical components yourself. Do not infer isolation from utility power being off. The owner can organize safely available records and contact the solar provider, electrical professional and other responsible parties. The result should be an equipment-specific disposition and documented authority to return the accepted system to service.
Describe exposure without assuming the whole system had the same event
Record the flood date, safely known water level and duration, areas affected and evidence already available from safe locations. Identify uncertainties explicitly. A photograph may show water near an enclosure without establishing whether its interior was wetted. A roof photograph may show dry modules without describing lower equipment. Give the provider the full layout and incident record rather than deciding which component must be sound. Retain original image files and previous service records so the assessment can distinguish new findings from known conditions.
DOE’s FEMP flood guidance discusses on-site PV exposure, including water traveling through conduit and erosion undermining structures. Its planning recommendations are not a homeowner repair recipe or an enclosure-rating guarantee. Use that background to ask whether the assessment includes the full connected installation and supporting site, not only visible roof modules. Do not calculate a safe equipment height, drill drainage holes, alter conduit or treat a weather-resistant label as proof of submersion suitability. The actual manufacturer and qualified evaluation must determine what can remain.
Separate the assessment branches
Use the table when requesting a scope, not to classify equipment yourself. Each branch can involve different professionals and records. Ask who coordinates them and who owns any unresolved condition. Preserve uncertainty until the qualified report supplies a supported answer. A service request saying only “solar stopped after rain” may miss the relevant exposure, while a claim of total loss may exceed the evidence. Describe the observations truthfully and require the provider to distinguish confirmed findings, recommendations and limits.
| Evidence or condition | Qualified question | Unsafe assumption to avoid |
|---|---|---|
| Exposure uncertain | Which components and pathways need assessment? | Dry exterior means no interior exposure |
| Known wetting or submersion | What replacement or other disposition is required? | Drying restores approved electrical condition |
| Erosion or damaged supports | Is structural or site review needed before access? | Electrical function proves structural safety |
| Service provider reports completion | What authorized commissioning and approval evidence exists? | A paid bill or app output is clearance |
Give the provider a complete equipment and ownership file
Gather the array layout, one-line drawing if available, module and inverter models, installed storage or controls, commissioning documents and prior repairs. Obtain identifiers from records or safely available labels, not by climbing onto the roof or entering a flooded electrical area. Include equipment in garages, basements, exterior cabinets and outbuildings. Ask the provider to reconcile the file with the actual installation. An original design may omit later replacement components or battery additions that need their own review.
Identify who owns the equipment and who is authorized to arrange work. A cash-purchased system, financed system, lease or power-purchase agreement may have different contacts and contract responsibilities. Tesla’s disaster page provides its own service route and distinguishes ownership arrangements; it does not supply a battery or solar restart procedure for every installation. Contact the actual provider under the applicable agreement. Ask for the case reference and requested documents. Do not assume another company’s risk allocation, billing adjustment or remedy applies to your contract.
Request a component disposition, not a vague all-clear
Ask the qualified electrical and solar providers for a written scope identifying affected components, exposure evidence, applicable equipment documents and the evaluations supporting their recommendations. Where replacement is required, obtain the actual component and compatibility plan. Where a component is proposed to remain, ask what manufacturer instruction and assessment supports that decision. Do not request a favored conclusion because the system seems expensive to replace. The disposition must follow the evidence and applicable requirements rather than the homeowner’s wish to restart quickly.
DOE warns that submerged PV components need replacement in the context its flood guidance describes. Do not reinterpret that warning as permission to reuse a wetted inverter after it dries, or expand it into a claim that every unrelated component at every flooded property is automatically a total loss. Ask the qualified provider to identify the equipment actually affected and any further connected-system assessment required. If instructions or exposure cannot be established, keep that uncertainty visible. A lack of visible corrosion is not an acceptance test.
Coordinate electrical, structural and claim decisions separately
If foundations, supports, the roof or access paths were affected, ask whether a structural, roofing or site specialist must clear the work area before solar service proceeds. Keep those findings separate from the electrical assessment. A qualified solar technician’s limited visit may not evaluate an eroded equipment pad or damaged roof framing. Clarify who can assess each concern and what will be excluded. Do not enter an unstable area to help locate a serial number or assume power generation means the supporting structure is sound.
Notify the appropriate insurer or equipment owner and preserve evidence in accordance with their actual instructions, without delaying urgent professional safety action. Ask about disposal authorization, claim documentation and contractor coordination. An insurance payment does not establish electrical safety, and a technical replacement recommendation does not guarantee policy coverage. Keep those records linked but distinct. Do not sign a scope that conceals unresolved water damage under new finishes or leaves the service provider and insurer each assuming the other has authorized equipment disposition.
Measurements, quote and restart-evidence checklist
Prepare the incident chronology; safely available water-level and duration evidence; equipment locations and identifiers; drawings; ownership agreement; service contacts; existing alerts with dates; and prior condition records. Ask the quote to separate assessment, replacement equipment, electrical work, safe roof or structural access, approvals, commissioning, disposal and restoration. Clarify what cannot be priced until exposure is assessed. Compare actual proposed scopes rather than promising a standard recovery cost, time or output. Record who supplies any missing manufacturer or installation documents.
Before accepting return to service, request the completed component schedule, qualified findings, applicable authority and utility approval evidence, commissioning report and the provider’s explicit remaining limitations. Record the actual restoration date. Ask how post-restoration production will be reviewed and who should receive new alerts. A performance check is not a substitute for safety acceptance. Do not perform an owner switching test to demonstrate readiness. Keep a clear contact for unresolved concerns, and do not quietly transform a limited inspection into an unconditional whole-system clearance.
Illustrative scenario: dry modules, exposed lower controls
Imagine a rooftop array above the flood level while lower electrical equipment and conduit routes are in an affected garage. This is an illustrative example, not a system we assessed. The owner’s app later displays information, but that does not identify the condition of every component or whether the reading is current. The owner contacts the service provider with the layout and safe incident evidence instead of interpreting roof height as an all-clear. Qualified professionals determine the relevant equipment disposition and access needs.
The final file separates lower-equipment replacement, any structural concern, authorized commissioning and the claim outcome. Our hail assessment guide owns a different damage question; hail imaging cannot clear flood-exposed equipment. The solar ownership maintenance file supports keeping records after restoration. Here the endpoint is qualified post-flood disposition and truthful completion evidence, not the day the exterior first looks dry or production first appears on a screen.
Frequently asked questions
Can I restart after everything looks dry? Do not use appearance as clearance. Does an app reading prove safety? No. Can rooftop modules be unaffected while lower equipment needs attention? The complete installation must be assessed. Can I open an enclosure to photograph the interior? No; leave electrical access and testing to qualified professionals.
Does a weather rating prove submersion suitability? Do not assume that. Is Tesla’s disaster page a generic restart guide? No. Does an insurance payment clear the system? No. What should the completion file contain? Equipment-specific findings, required approvals, commissioning and explicit unresolved limitations.