PES Supply Newsroom
Technical guides, product reviews, code updates, and industry news for installers, EPCs, and project managers
Latest Articles
Solar Panel Degradation: What Is the Lifespan and How to Maximize Output
PES PES Supply Editorial Team Trade expertise from 50,000+ SKUs and 169 authorized brands ⏱️ Reading time: 16...
Best Solar Panels for Off-Grid Systems: A Complete Buyer's Guide
PES PES Supply Editorial Team Trade expertise from 50,000+ SKUs and 169 authorized brands ⏱️ Reading time: 15...
How Many Solar Panels Do I Need? System Sizing Guide with Calculator
PES PES Supply Editorial Team Trade expertise from 50,000+ SKUs and 169 authorized brands ⏱️ Reading time: 14...
Solar Panel Efficiency Explained: Monocrystalline vs. Polycrystalline vs. Bifacial (2026)
PES PES Supply Editorial Team Trade expertise from 50,000+ SKUs and 169 authorized brands ⏱️ Reading time: 12...
Bifacial Solar Panels Guide: Real-World Gains, Costs & When They're Worth It
Bifacial solar panels deliver 5–30% extra yield — when the site allows it. Real gain factors by surface,...
MC4 Connectors & Solar Wire Gauge Guide: PV Wire Sizing Chart
Solar wire gauge chart for PV strings: NEC 690 156% rule, 10 vs 12 AWG PV wire, MC4...
Solar System Size Calculator: How Many Panels Do You Need? (Chart)
Size a solar system from your power bill: monthly kWh → system kW → panel count chart by...
Solar Panel Kits: The Complete Buyer's Guide for 2026
Compare grid-tied, off-grid, and hybrid solar panel kits, size a kit from your kWh usage, see what belongs...
Solar Panel Technology 2026: TOPCon Dominance, Perovskite Commercialization, and 500W+ Standard
Solar Panel Technology 2026: TOPCon Dominance, Perovskite Commercialization, and 500W+ Standard ⏱️ Reading time: 9 minutes | Updated...
The Installer's Diary: Lessons from 1,000+ Residential Solar Installations
The Installer's Diary: Lessons from 1,000+ Residential Solar Installations ⏱️ Reading time: 16 minutes | Updated July 2026...
Solar Panel Price Collapse 2023: Why Module Costs Dropped 50% and What It Means
Solar Panel Price Collapse 2023: Why Module Costs Dropped 50% and What It Means ⏱️ Reading time: 5...
2022 Solar Panel Technology Milestones: Efficiency Records and New Cell Architectures
2022 Solar Panel Technology Milestones: Efficiency Records and New Cell Architectures ⏱️ Reading time: 5 minutes | Updated...
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REC Alpha Pure-RX vs Qcells Q.TRON: Premium Residential Panels 2026
Premium panel shootout — REC Alpha Pure-RX (HJT) vs Qcells Q.TRON (TOPCon) on temperature coefficient, degradation, warranties, US content, and $/W.
REC Alpha Pure-RX vs Qcells Q.TRON: Premium Residential Panels 2026
Premium panel shootout — REC Alpha Pure-RX (HJT) vs Qcells Q.TRON (TOPCon) on temperature coefficient, degradation, warranties, US content, and $/W.
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How Many Solar Panels Do I Need for 10,000 kWh Per Month? - The Complete 2026 Guide
Need 10,000 kWh per month from solar? This complete 2026 guide from Portlandia Electric Supply breaks down the exact panel count, inverter sizing, battery storage options, and costs for large-scale...
How Many Solar Panels Do I Need for 10,000 kWh Per Month? - The Complete 2026 Guide
Need 10,000 kWh per month from solar? This complete 2026 guide from Portlandia Electric Supply breaks down the exact panel count, inverter sizing, battery storage options, and costs for large-scale...
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MidNite vs Victron Charge Controllers: Classic vs SmartSolar
MPPT charge controller shootout — MidNite Classic vs Victron SmartSolar on voltage headroom, integrated protection, monitoring ecosystems, and expandability.
MidNite vs Victron Charge Controllers: Classic vs SmartSolar
MPPT charge controller shootout — MidNite Classic vs Victron SmartSolar on voltage headroom, integrated protection, monitoring ecosystems, and expandability.
