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AP TOS Solar Panel Review

Jul 29, 2025

Overview

A personal review of AP TOS solar panels, highlighting their advantages over previous models, detailed performance metrics, practical use cases, and price comparisons with other brands.

Reasons for Switching to AP TOS Panels

  • AP TOS panels outperformed previous solar panels tested in terms of convenience and performance.
  • Panels are significantly lighter (48 lb) compared to similar wattage competitors (typically 70–80 lb).
  • Strong output for their size; 400W module can reach up to 500W with bifacial gain.
  • Physically smaller than comparable models, making installation easier.

Technical Features & Performance

  • Panels are bifacial, allowing for energy collection from both sides.
  • Lower operating voltage (37V vs. typical 50V) with higher output current, enabling more panels in series without exceeding voltage limits.
  • 1,500V string voltage rating for added safety and system compatibility.
  • Long connection cables simplify installation, even if panels are not optimally placed.
  • 30-year warranty on all AP TOS panels.

Mounting and Bifacial Gain Insights

  • Panels placed on the ground or low mounts show about 5% bifacial gain.
  • Substantial bifacial gain requires elevating panels at least one meter above ground or higher (e.g., carport installations).
  • The Integra rack is recommended for mounting, with plans to feature it in future videos.

Price and Model Comparison

  • 370W model: $0.27/watt, 42 lb, capable of up to 480W output—considered best value.
  • 400W model: $0.36/watt, 48 lb.
  • 440W model: $0.38/watt.
  • The 370W model stands out for affordability and near-equal performance to higher-wattage options.

Comparison with Other Brands

  • Canadian Solar panels are more expensive, heavier, not bifacial, and offer a shorter (25-year) warranty.
  • Grape Solar 100W panels are suggested only for small systems, despite their affordability.

Future Content and Community Engagement

  • Upcoming projects will feature new system builds with AP TOS panels in unique locations.
  • Viewers are encouraged to share their own AP TOS panel arrays on the forum for community feedback.