| Published power range | 415–420 W |
| Scored benchmark | 420 W |
| Module efficiency | 20.5% |
| Temp. coefficient Pmax | -0.34 %/°C |
| First-year degradation | 2% |
| Annual degradation | 0.45 %/yr |
| Product warranty | 25 yr |
| Performance warranty | 25 yr |
| Energy yield test result | No public independent yield result found in reviewed sources |
| Reliability testing | Not independently tested |
| Hail resistance | Enhanced hail 35mm certified |
Some values are estimated where independent verification was not available: see the full scorecard and review.solar/terms.
TSP 420 · every criterion scored by the live rubric (Solar Analytica panel rubric v2.16.0), with its recorded value, evidence status, and any linked source. Page 1 carries the buying-decision summary; this page is the full record for verification and right of reply.
| Architecture & Design | |||
| Fire classification (IEC 61730) | Certified | datasheet | Source +1 |
| Efficiency & Yield | |||
| Module efficiency (%) | 20.5 | datasheet | Source |
| Independent energy yield | No public independent yield result found in reviewed sources | reviewed absence | Source +3 |
| Temp coefficient Pmax (%/C) | -0.34 | datasheet | Source |
| Durability (verified) | |||
| Verified reliability | Not independently tested | reviewed absence | Source |
| Positive loading (MQT16, Pa) | 4309 | datasheet | Source |
| Negative loading (MQT16, Pa) | 4309 | datasheet | Source |
| PID (IEC TS 62804) | Not addressed | reviewed absence | Source +1 |
| Salt mist (IEC 61701) | Not Listed | reviewed absence | Source |
| Hail resistance | Enhanced hail 35mm certified | datasheet | Source |
| Performance & Degradation | |||
| Guaranteed end-of-warranty output (%) | 87.2 | datasheet | Source |
| First-year degradation (%) | 2.0 | datasheet | Source |
| Annual degradation (%/yr) | 0.45 | datasheet | Source |
| Performance guarantee period (yrs) | 25 | datasheet | Source |
| Guarantee & Backbone | |||
| Guarantee period (yrs) | 25 | datasheet | Source |
| Guarantee assurance | Parts & Service | datasheet | Source |
| Financial strength & warranty backing | Financially strong (profitable / strong parent) | datasheet | Source |
| Manufacturing track record | 1-4 years, scaling | datasheet | Source |
| Sustainability | |||
| End-of-life & recycling disclosure | No end-of-life documentation found | stated | Source +1 |
review.solar · audit sheet · Solar Analytica panel rubric v2.16.0 · https://review.solar/cards/tesla-tesla-solar-panel-tsp-420-us-made-brand-ecosystem