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Technical guides, product reviews, code updates, and industry news for installers, EPCs, and project managers

Close-up of an electrical breaker panel with a licensed electrician testing circuits with a multimeter
Featured ·deep-cycle

How to Size Circuit Breakers: NEC 125% Rule (2026)

Learn how to size circuit breakers correctly with the NEC 125% rule. Step-by-step calculator for safe, compliant breaker selection. Start sizing today.

Aug 12, 2026 · 16 min read Read the featured article →

Latest Articles

Container port at golden hour with crane lifting crated solar panels over the dock
2026

Solar Module Sourcing in 2026: Regional Costs, Tariff Stacking, and the Domestic Content Math

Where solar modules are made in 2026, what they actually cost by region, how tariffs stack, and when...

Aug 09, 20269 min read
Pallets of stacked solar modules in a bright distribution warehouse with forklift and conduit racks
2026

Module Prices Hit $0.34/W — So Why Did Your Commercial Quote Go Up?

Solar module prices dropped to $0.34/W in Q1 2026, but commercial system prices rose 4%. The real story...

Aug 08, 20263 min read
Two installers finishing a residential rooftop solar installation at sunset
2026

The Safe Harbor Deadline Passed. Here's What Actually Happened.

The July 4, 2026 safe harbor deadline for full ITC has passed. We break down what developers got...

Aug 07, 20264 min read
Worker in cleanroom suit inspecting a silicon ingot at a solar polysilicon factory, shipping containers beyond the window
2026

Section 232 Polysilicon Tariffs Hit Solar: What August 2026 Means for Your Inventory

New Section 232 tariffs on solar-grade polysilicon took effect August 6. We break down what this means for...

Aug 06, 20264 min read
Technician's hands with clipboard and tablet inspecting a home standby generator, shallow depth of field
extended warranty

Generac Generator Warranty Explained: 5, 7, and 10-Year Extended Coverage

🇺🇸/🇲🇽 Versión en español → Generac sells more residential standby generators than every competitor combined, which means contractors...

Aug 03, 202612 min read
Residential standby generator installed beside a modern suburban home's electrical service panel at golden hour
buying guide

Whole Home Generator Sizing Guide 2026: How Many kW Do You Actually Need?

🇺🇸/🇲🇽 Versión en español → The most common question we hear from contractors and homeowners alike is deceptively...

Aug 03, 202613 min read
Battery Storage Incentives by State: 2026 Rebate Programs and Tax Credits
News

Battery Storage Incentives by State: 2026 Rebate Programs and Tax Credits

✎ PES Supply Editorial Team Trade expertise from 50,000+ SKUs and 169 authorized brands 13 min read Battery...

Jul 30, 202613 min read
Solar Market Outlook H2 2026: Panel Prices, Supply Chain, and Demand Trends
News

Solar Market Outlook H2 2026: Panel Prices, Supply Chain, and Demand Trends

✎ PES Supply Editorial Team Trade expertise from 50,000+ SKUs and 169 authorized brands 13 min read Solar...

Jul 29, 202613 min read
Solar Industry Tariff Updates: What Installers Need to Know in 2026
News

Solar Industry Tariff Updates: What Installers Need to Know in 2026

13 min read Solar Industry Tariff Updates: What Installers Need to Know in 2026 📋 Key Takeaways Section...

Jul 27, 202613 min read
A city skyline at dusk with glowing windows and power transmission lines in the foreground
News

Growing Electricity Demand: Why Energy Policy Reform Is More Urgent Than Ever

Last Updated: July 2026 • Based on U.S. EIA Short-Term Energy Outlook, IEA Data, and Reuters Reporting. U.S....

Jul 24, 202610 min read
Mini Split Installation Cost (2026): Equipment, Labor & Electrical Requirements
electrical requirements

Mini Split Installation Cost (2026): Equipment, Labor & Electrical Requirements

Mini split installation cost in 2026 — single-zone vs. multi-zone price ranges, what drives labor, and the electrical...

Jul 23, 20269 min read
Solar panels elevated over green farmland with sheep grazing beneath
News

Harnessing the Sun and Soil: How Agrivoltaics is Revolutionizing Sustainable Energy Solutions

I've verified the key data points — the Fraunhofer study actually found 56-90% land use efficiency gains (not...

Jul 21, 202613 min read
Newest Solar Panels in 2026: Latest Models from Leading U.S. Solar Brands
News

Newest Solar Panels in 2026: Latest Models from Leading U.S. Solar Brands

Last Updated: July 2026 • Based on Clean Energy Reviews, EnergySage, and Manufacturer Product Announcements. Leading U.S. solar...

Jul 18, 20269 min read
From the Field: A Master Electrician's Guide to Solar Commissioning
News

From the Field: A Master Electrician's Guide to Solar Commissioning

13 min read From the Field: A Master Electrician's Guide to Solar Commissioning By Marcus Bell, Master Electrician...

Jul 15, 202614 min read
A home energy storage system with a smart meter showing zero grid flow
News

How Can a Residential ESS Achieve 0W Grid Flow?

Last Updated: July 2026 • Based on Sigenergy, Fortress Power, SMA, and Solis Zero-Export Technical Documentation. A residential...

Jul 14, 20269 min read
Close-up of an automatic transfer switch panel with conduit in a residential utility room
News

How Automatic Transfer Switches Work

Last Updated: July 2026 • Based on Cummins, Eaton, and Generac Technical Guidance [web:639] An automatic transfer switch...

Jul 12, 20269 min read
A large residential rooftop fully covered with solar panels on a sunny day
Commercial Solar Panel

Solar Panels for 10,000 kWh/Month: 2026 Sizing Guide

Producing 10,000 kWh per month requires 97 to 192 solar panels depending on wattage and location. This complete...

Jul 06, 202616 min read
26kW Generator Guide 2026: Generac Review, Amps, What It Runs
generac

26kW Generator Guide 2026: Generac Review, Amps, What It Runs

Last Updated: July 2026 • Specs verified against Generac product documentation Explore the Generator Hub → sizing guides,...

Jul 01, 202610 min read
7 Benefits of Switching to Commercial Solar Energy
commercial solar

7 Benefits of Switching to Commercial Solar Energy

Last Updated: June 2026 • Based on EIA Commercial Energy Data, Lawrence Berkeley National Laboratory Reports, and 2026...

Jun 30, 202618 min read
2026 H1 Solar Industry Recap: Record Installations, Tariff Uncertainty, and Storage Dominance
News

2026 H1 Solar Industry Recap: Record Installations, Tariff Uncertainty, and Storage Dominance

9 min read 2026 H1 Solar Industry Recap: Record Installations, Tariff Uncertainty, and Storage Dominance Published June 30,...

Jun 30, 202610 min read
How to Successfully Implement Solar Energy in Your Business
commercial solar

How to Successfully Implement Solar Energy in Your Business

Last Updated: June 2026 • A Practical Implementation Guide for Business Owners, Facility Managers, and CFOs Commercial solar...

Jun 30, 202622 min read
The Main Types of Solar Panels: Which Should You Choose?
News

The Main Types of Solar Panels: Which Should You Choose?

  Last Updated: June 2026 • Based on NREL Panel Technology Data, IEC Standards, and 2026 Market Pricing...

Jun 26, 202620 min read
After Nearly 20 Years, America's Biggest Clean Energy Project Is Finally Operational
Clean Energy

America's Largest Clean Energy Project Goes Live After Nearly 20 Years, Powering One Million Homes

Last Updated: June 2026 • Analysis of the Vineyard Wind 1 Offshore Wind Project and Its Impact on...

Jun 26, 202620 min read

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