PES Supply Newsroom
Technical guides, product reviews, code updates, and industry news for installers, EPCs, and project managers
Pitched Roof Solar Mounting: Flashing, L-Brackets, and Lag Bolt Guide
A pitched-roof solar array is only as good as its attachments. Every pound of uplift from a storm, every inch of snow load, and every drop of rain that would love to...
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Flat Roof Solar Mounting: Ballasted vs. Penetrating Systems
Flat commercial roofs are where solar economics get serious — big uninterrupted planes, no shingle tear-offs, tilt angles...
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EPA Section 608 Certification: Complete Study Guide (Type I, II, III & Universal)
Free EPA 608 certification study guide. Type I, II, III, and Universal exam prep, 22 practice questions, refrigerant recovery rules, and passing tips.
EPA Section 608 Certification: Complete Study Guide (Type I, II, III & Universal)
Free EPA 608 certification study guide. Type I, II, III, and Universal exam prep, 22 practice questions, refrigerant recovery rules, and passing tips.
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N-Type vs TOPCon vs HJT Solar Panels: Which Technology Is Best in 2026?
Last Updated: August 2026 • Solar Cell Technology Comparison for Installers, EPCs & Commercial Buyers The solar panel market has moved beyond traditional P-type PERC. In 2026, most high-performance modules...
N-Type vs TOPCon vs HJT Solar Panels: Which Technology Is Best in 2026?
Last Updated: August 2026 • Solar Cell Technology Comparison for Installers, EPCs & Commercial Buyers The solar panel market has moved beyond traditional P-type PERC. In 2026, most high-performance modules...
