{"hq_id":"hq-p-out-000015","name":"Solar Panel (crystalline silicon photovoltaic)","category":{"primary":"outdoor","secondary":"renewable_energy","tags":["solar","lead","PFAS","recycling","renewable_energy"]},"product_tier":"OUT","overall_risk_level":"moderate","description":"Crystalline silicon photovoltaic solar panels for residential/commercial rooftop installation. Contains lead solder (2-5g per panel), cadmium traces (in some thin-film types), silicon tetrachloride waste from manufacturing, and PFAS-containing backsheets. Normal operation exposure is nil, but end-of-life disposal of millions of panels creates lead and cadmium leaching risk in landfills. Manufacturing involves hazardous chemicals (HF acid, silicon tetrachloride). Some backsheet materials contain PFAS for weather resistance.","synthesis":{"derived_risk_level":"severe","synthesis_confidence":0.595,"synthesis_method":"compound_composition","context_used":"human_infant","context_source":"available_priority","exposure_modifier":1,"vulnerability_escalated":false,"escalation_reason":null,"compounds_resolved":1,"compounds_total":1,"synthesis_date":"2026-07-30","synthesis_version":"1.2.0","methodology_note":"exposure_modifier and adjusted_magnitude are computed from ALETHEIA-calibrated heuristics (route × duration × frequency multipliers, clamped to [0.5, 1.4]). Multipliers are directionally informed by EPA Exposure Factors Handbook (2011) and CalEPA OEHHA but are not regulatory consensus. See /api/methodology for full disclosure."},"hazard_summary":{"overall_risk":"moderate","primary_concerns":["Lead solder leaching in landfill disposal","PFAS backsheet environmental persistence","Manufacturing hazards (HF acid, SiCl4)","Millions of panels reaching end-of-life by 2030s"],"sensitive_populations":"Manufacturing workers, recycling workers, communities near landfills","exposure_routes":"None during operation; dermal (breakage/installation); environmental (landfill leaching)"},"exposure":{"routes":["dermal"],"contact_types":[],"users":[],"duration":"25-30 year lifespan","frequency":"rare","scenarios":["Dermal contact during handling of Solar Panel (crystalline silicon photovoltaic) (25-30 year lifespan contact)"],"notes":"Zero exposure during normal operation; risk at manufacturing, installation (breakage), and end-of-life disposal"},"consumer_guidance":{"red_flags":["No end-of-life recycling plan","Breakage/cracking (lead exposure)","Unknown manufacturer without IEC certification"],"green_flags":["Lead-free solder option","PFAS-free backsheet","Manufacturer take-back/recycling program","IEC 61215 + 61730 certified"],"what_to_ask":["Does this use lead-free solder?","Is the backsheet PFAS-free?","What is the manufacturer's recycling program?"],"alternatives":["Lead-free solder panels","Thin-film CdTe with manufacturer recycling (First Solar)","Perovskite solar (emerging, lead-free options)"],"notes":null},"regulatory":{"applicable_regulations":["IEC 61215 (design qualification)","IEC 61730 (safety)","EU WEEE Directive (e-waste recycling)","California SB 489 (solar panel recycling)","RoHS (lead exemption for PV)"],"certifications":[],"labeling":{},"recalls":[],"regulatory_gap":null,"notes":null},"lifecycle":{"recyclable":"yes (specialized PV recycling)","disposal_guidance":"NEVER landfill; return to manufacturer recycling program or certified PV recycler","hazardous_waste":true,"expected_lifespan":"25-30 years"},"formulation":{"form":"panel_module","key_ingredients":[{"hq_id":null,"name":"Crystalline silicon wafers","role":"photovoltaic_cell","concentration_pct":"3-5"},{"hq_id":null,"name":"Tempered glass","role":"front_cover","concentration_pct":"70-75"},{"hq_id":"hq-c-ino-000001","name":"Lead","role":"solder","concentration_pct":"0.01-0.05","match_status":"repaired-D391","match_date":"2026-07-14","_d391_repair":{"was":"hq-c-ino-000023","now":"hq-c-ino-000001","basis":"compound_name match (CAS/name-verified)"}},{"hq_id":null,"name":"EVA encapsulant","role":"cell_protection","concentration_pct":"5-10"},{"hq_id":null,"name":"Aluminum frame","role":"structural","concentration_pct":"10-15"},{"hq_id":null,"name":"Fluoropolymer backsheet","role":"weather_protection","concentration_pct":"2-3"}],"certifications":["IEC 61215","IEC 61730","UL 1703"]},"materials":{"common":[],"concerning":[],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-ino-000001","compound_name":"Lead","role":"solder","typical_concentration":null}],"identifiers":{"manufacturer":"","common_names":[],"aliases":[],"brands":[]},"brand_examples":[{"brand":"Generic Mass-Market Brand A","manufacturer":"Consumer Products Corporation","market_position":"mass_market","notable":"Widely available mass-market option"},{"brand":"Generic Mass-Market Brand B","manufacturer":"Consumer Goods Ltd","market_position":"mass_market","notable":"Popular budget alternative"},{"brand":"Premium Brand A","manufacturer":"Premium Consumer Inc","market_position":"premium","notable":"Upscale premium positioning"},{"brand":"Professional Brand","manufacturer":"Professional Products Co","market_position":"professional","notable":"Professional/salon-grade option"},{"brand":"Specialty Eco-Brand","manufacturer":"Natural Products Ltd","market_position":"premium","notable":"Sustainable/natural product line"}],"brand_examples_disclaimer":"Representative branded products of this category. Concerning ingredients listed in materials.concerning[] apply to the category, not necessarily to every named brand. Specific formulations vary by SKU and may have changed since this record was written; consult the brand's current ingredient label before drawing brand-level conclusions.","sources":[{"type":"expert_curation","name":"ALETHEIA Safety Database","date":"2026-03-23"},{"type":"regulation","title":"IEC 61215 (design qualification)","jurisdiction":"","id":"src_71d5acc8"},{"type":"regulation","title":"IEC 61730 (safety)","jurisdiction":"","id":"src_be81585b"},{"type":"regulation","title":"EU WEEE Directive (e-waste recycling)","jurisdiction":"","id":"src_974d3305"},{"type":"regulation","title":"California SB 489 (solar panel recycling)","jurisdiction":"","id":"src_ecc27e0a"},{"type":"regulation","title":"RoHS (lead exemption for PV)","jurisdiction":"","id":"src_0e21e9ba"},{"id":"src_001","type":"cdc","title":"CDC - Lead Poisoning Prevention","accessed":"2026-01-13","relevance":"Blood lead reference values, no safe level doctrine","inherited_from_compound":"hq-c-ino-000001"},{"id":"src_002","type":"who","title":"WHO - Lead Poisoning Fact Sheet","year":2024,"accessed":"2026-01-13","relevance":"Global burden statistics, health effects","inherited_from_compound":"hq-c-ino-000001"},{"id":"src_003","type":"ihme","title":"IHME Global Burden of Disease Study 2021 - Lead Exposure","accessed":"2026-01-13","relevance":"1.5 million deaths, 33 million DALYs","inherited_from_compound":"hq-c-ino-000001"},{"id":"src_004","type":"journal","title":"Angrand et al. Relation of blood lead levels and lead in gasoline: an updated systematic review","journal":"Environmental Health","year":2022,"doi":"10.1186/s12940-022-00936-x","relevance":"Leaded gasoline phase-out and blood lead decline","inherited_from_compound":"hq-c-ino-000001"},{"id":"src_005","type":"journal","title":"Silbergeld et al. Lead and osteoporosis: mobilization of lead from bone in postmenopausal women","journal":"Environmental Research","year":1988,"relevance":"Bone lead mobilization during menopause","inherited_from_compound":"hq-c-ino-000001"},{"id":"src_006","type":"vet","title":"Merck Veterinary Manual - Lead Poisoning","accessed":"2026-01-13","relevance":"Veterinary clinical data, treatment protocols","inherited_from_compound":"hq-c-ino-000001"},{"id":"src_007","type":"cdc","title":"ATSDR - Toxicological Profile for Lead","accessed":"2026-01-13","relevance":"Comprehensive toxicological data","inherited_from_compound":"hq-c-ino-000001"},{"id":"src_008","type":"journal","title":"Reuben et al. Association of Childhood Lead Exposure With Adult Personality Traits and Lifelong Mental Health","journal":"JAMA Psychiatry","year":2019,"relevance":"Mental health effects of childhood exposure","inherited_from_compound":"hq-c-ino-000001"},{"id":"src_009","type":"journal","title":"Kovarik. Charles F. Kettering and the 1921 discovery of tetraethyl lead","source":"Environmental History archives","relevance":"Historical industry knowledge of toxicity","inherited_from_compound":"hq-c-ino-000001"},{"id":"src_010","type":"journal","title":"McFarland et al. Half of US population exposed to adverse lead levels in early childhood","journal":"PNAS","year":2022,"relevance":"170 million Americans with childhood lead exposure","inherited_from_compound":"hq-c-ino-000001"},{"id":"src_011","type":"journal","title":"Reuben A. Childhood Lead Exposure and Adult Neurodegenerative Disease. Journal of Alzheimer's Disease (2018) -- corrected author attribution (the record misattributed this to \"Bellinger\"; David Bellinger is thanked only for correspondence/review in the acknowledgments, not an author)","journal":"Journal of Alzheimer's Disease","relevance":"Dementia risk from childhood exposure","year":2018,"inherited_from_compound":"hq-c-ino-000001"},{"id":"src_012","type":"journal","title":"The Lancet Planetary Health - Global health burden and cost of lead exposure","year":2023,"relevance":"765 million IQ points lost, 5.5 million cardiovascular deaths","inherited_from_compound":"hq-c-ino-000001"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-07-31T00:57:28.935Z"},"_notice":"ALETHEIA output is reference data, not professional advice. Not a substitute for primary agency sources or qualified professionals. See https://aletheia.holisticquality.io/disclaimer.","_disclaimer_url":"https://aletheia.holisticquality.io/disclaimer"}