PES Supply Newsroom
Technical guides, product reviews, code updates, and industry news for installers, EPCs, and project managers
Combiner Box Sizing Chart (PV Strings and Fuses)
Combiner Box Sizing Chart PV combiner box sizing by string count and fuse rating, using the NEC 690.8 Isc rule, with the string math that decides it. Combiner box sizing chart A...
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View all Solar →Combiner Box Sizing Chart (PV Strings and Fuses)
Combiner Box Sizing Chart PV combiner box sizing by string count and fuse rating, using the NEC 690.8...
Commercial Solar Panel Output Chart (2026)
Commercial Solar Panel Output Chart (2026) Compare commercial solar panel classes by wattage and efficiency, with energy per...
PES Launches the Wholesale Solar Pricing Index — Verified Weekly Solar Panel Prices
PES launches the Wholesale Solar Pricing Index — live, dated, verified weekly solar panel prices: PES vs indexed...
Silfab Prime BC vs SunPower Maxeon 7 — Made-in-North-America Solar Panels (2026)
The definitive made-in-North-America premium solar panel comparison — Silfab Prime BC (Bellingham WA + Fort Mill SC) vs...
Batteries & Storage
View all Batteries & Storage →New batteries & storage coverage is in the works — browse all batteries & storage articles →
Generators
View all Generators →New generators coverage is in the works — browse all generators articles →
Electrical & Code
View all Electrical & Code →
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...
HVAC
View all HVAC →New hvac coverage is in the works — browse all hvac articles →
Industry Desk
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Silfab Prime BC vs SunPower Maxeon 7 — Made-in-North-America Solar Panels (2026)
The definitive made-in-North-America premium solar panel comparison — Silfab Prime BC (Bellingham WA + Fort Mill SC) vs...
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Commercial Solar Panel Output Chart (2026)
Commercial Solar Panel Output Chart (2026) Compare commercial solar panel classes by wattage and efficiency, with energy per...
PES Launches the Wholesale Solar Pricing Index — Verified Weekly Solar Panel Prices
PES launches the Wholesale Solar Pricing Index — live, dated, verified weekly solar panel prices: PES vs indexed...
Silfab Prime BC vs SunPower Maxeon 7 — Made-in-North-America Solar Panels (2026)
The definitive made-in-North-America premium solar panel comparison — Silfab Prime BC (Bellingham WA + Fort Mill SC) vs...
REC Alpha Pure vs Silfab Prime BC vs SunPower Maxeon 7 — Premium Solar Panel Comparison (2026)
Three premium residential flagships head-to-head — REC Alpha Pure-RX HJT, Silfab Prime BC back-contact, and SunPower Maxeon 7...
Jinko Tiger Neo N-Type vs Canadian Solar HiKu — Utility-Scale Panel Comparison (2026)
Two utility-scale flagships head-to-head — Jinko Tiger Neo N-Type (585-635W) vs Canadian Solar HiKu / TOPBiHiKu7 (545-700W). Cost...
JA Solar DeepBlue vs Bluesun vs Trina Vertex — 550-560W Panel Comparison (2026)
Three 550-560W residential + commercial panels head-to-head — JA Solar DeepBlue 4.0 N-TOPCon, Bluesun mono-PERC, and Trina Vertex...
Aiko Neostar ABC N-Type Solar Panels — Deep Dive & 2026 Buying Guide
Aiko Solar's Neostar family — the first mass-manufactured All-Back-Contact (ABC) N-Type panels at scale. 23.6 % efficiency, -0.26...
LONGi Hi-MO 6 vs Hi-MO X6 vs Hi-MO 7 — 2026 Solar Panel Buying Guide
LONGi's three flagship residential + commercial solar panel families compared head-to-head: Hi-MO 6 mono-PERC, Hi-MO X6 HPBC back-contact,...
REC vs Panasonic Solar Panels 2026: Alpha Pure vs EverVolt Head-to-Head
Updated September 2026 — content reviewed and refreshed by the PES team. For current pricing and availability, see...
Bifacial vs Monofacial Solar Panels: 2026 Buyer's Comparison for Installers
Updated September 2026 — refreshed against the live PES catalog; product pricing verified 2026-09-26. 2026 product line update...
Solar Panel Degradation: What Is the Lifespan and How to Maximize Output
Updated September 2026 — refreshed against the live PES catalog; product pricing verified 2026-09-26. 2026 product line update...
Best Solar Panels for Off-Grid Systems: A Complete Buyer's Guide
Updated September 2026 — refreshed against the live PES catalog; product pricing verified 2026-09-26. 2026 product line update...
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 brandsReady to build? Shop solar...
Solar Panel Efficiency Explained: Monocrystalline vs. Polycrystalline vs. Bifacial (2026)
Solar panel efficiency is the most quoted and least understood number on the datasheet. Marketing puts it in...
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
Three numbers define solar panel technology in 2026: 83%, 770W, and 33%. TOPCon now carries roughly 83% of...
The Installer's Diary: Lessons from 1,000+ Residential Solar Installations
The Installer's Diary: Lessons from 1,000+ Residential Solar Installations Roof truths, wire-pull wisdom, customer conversations, and the mistakes...
Solar Panel Price Collapse 2023: Why Module Costs Dropped 50% and What It Means
Updated September 2026 — refreshed against the live PES catalog; product pricing verified 2026-09-26. In November 2023 I...
2022 Solar Panel Technology Milestones: Efficiency Records and New Cell Architectures
Looking back from 2026, the solar industry's 2022 calendar year reads like a pivot point written in bold....
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This Week in Power & Solar — October 20, 2026
The $0.38/W module price floor lands Dec 4, China's export rebate is gone, NEC 2026 rewrites generator shutdown rules, and standby demand keeps climbing.
This Week in Power & Solar — October 20, 2026
The $0.38/W module price floor lands Dec 4, China's export rebate is gone, NEC 2026 rewrites generator shutdown rules, and standby demand keeps climbing.
