PES Supply Newsroom
Technical guides, product reviews, code updates, and industry news for installers, EPCs, and project managers
Solar Panels + EV Charging: How to Build an Energy-Efficient Home
Last Updated: August 2026 • A Practical Guide for Homeowners Combining Solar and EV Charging An electric vehicle is, from a home electrical standpoint, one of the largest single loads most households...
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Solar
View all Solar →
Solar Panels + EV Charging: How to Build an Energy-Efficient Home
Last Updated: August 2026 • A Practical Guide for Homeowners Combining Solar and EV Charging An electric vehicle...
Solar Panel Wholesale Pricing: What Installers Should Know in 2026
Last Updated: August 2026 • A Procurement Guide for Installers, EPCs, and Contractors Panel pricing is rarely the...
Solar Microgrids: How Communities Can Build More Resilient Energy Systems
Last Updated: August 2026 • A Practical Overview for Municipalities, Campuses, and Community Organizers A single home with...
AI + Solar Energy: How Artificial Intelligence Is Changing Solar System Design
Last Updated: August 2026 • An Industry Overview for Installers, Contractors, and Property Owners Solar system design used...
Batteries & Storage
View all Batteries & Storage →
Battery Runtime Calculator: Ah to Hours With DoD & Inverter Losses
Interactive battery runtime calculator: capacity in Ah or Wh, derated by depth of discharge and inverter efficiency, divided...
Off-Grid Battery Bank Sizing Calculator: kWh, Amp-Hours & Autonomy Days
Interactive battery bank sizing calculator: daily kWh, autonomy days, DoD, and inverter efficiency in — bank kWh, amp-hours,...
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...
Solar + Battery Storage: The Complete 2026 Guide for Homeowners
Last Updated: August 2026 • Home Solar, Battery Backup & Energy Independence Guide Residential solar has changed. A...
Generators
View all Generators →
Generator Sizing Calculator: Running + Starting Watts to the Right kW
Interactive generator sizing calculator with a build-your-own load list: running watts plus largest starting surge plus 25% headroom,...
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...
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...
Electrical & Code
View all Electrical & Code →
Solar Panels + EV Charging: How to Build an Energy-Efficient Home
Last Updated: August 2026 • A Practical Guide for Homeowners Combining Solar and EV Charging An electric vehicle...
Volts to Amps Conversion: How to Calculate Amps from Volts (Calculator 2026)
Volts to Amps: How to Calculate Current from Voltage Volts alone can't make amps — add watts or...
MWh to kWh Conversion: Megawatt-Hours to Kilowatt-Hours Calculator (2026)
MWh to kWh: Calculator, Formula & Chart Megawatt-hours to kilowatt-hours in one step — with the storage and...
Watts to Kilowatts Conversion: W to kW Calculator + Chart (2026)
Watts to Kilowatts: Calculator, Formula & Chart The W → kW conversion in one step — plus the...
HVAC
View all HVAC →
Service Entrance Load Calculator: NEC 220 Standard Method (Sq Ft + Appliances + HVAC)
Interactive NEC Article 220 standard-method load calculator: square footage, appliances, range, dryer, HVAC, and EV charging in —...
HVAC Contractor Pallet Freight and LTL Guide: Hazmat Routing, DOT Compliance, and Landed Cost Economics
How refrigerant and HVAC parts actually move through the freight network -- and how contractors cut $1,500-4,000 per...
Commercial HVAC Refrigerant Compliance for Facility Managers: 40 CFR Part 82, Leak Repair Thresholds, and Penalty Avo...
A facility manager's operating manual for EPA Section 608 compliance -- recordkeeping, leak-repair triggers, and the audit trail...
HVAC Service Tools Brand Selector: Fieldpiece vs Testo vs Fluke Digital Manifolds, Gauges, and Leak Detectors
Which digital-manifold ecosystem earns its price, which brand your senior techs will actually use, and how to standardize...
Industry Desk
View all Industry Desk →
LADWP and Investor-Owned Utility RFPs - A Bidder's Guide for Electrical and Renewable Equipment Supply
LADWP and Investor-Owned Utility RFPs -A Bidder's Guide for Electrical and Renewable Equipment Supply Responding to Los Angeles...
Federal Contractor Buy-American Electrical Requirements - FAR 52.225 Compliance for Electrical, Solar, and Grid Equip...
Federal Contractor Buy - American Electrical Requirements - FAR 52.225 Compliance for Electrical, Solar, and Grid Equipment How...
State Cooperative Purchasing Programs for Electrical Equipment - Sourcewell, OMNIA, TIPS, NASPO ValuePoint
State Cooperative Purchasing Programs for Electrical Equipment - Sourcewell, OMNIA, TIPS, NASPO A working guide to the four...
Federal Solar RFP Response Template Library - Section L/M Compliance, Past Performance, and Bid Package Structure
Federal Solar RFP Response Template Library - SF-33 to Past Performance to BABA Cert Every federal solar solicitation...
The Latest
Solar Panel Wholesale Pricing: What Installers Should Know in 2026
Last Updated: August 2026 • A Procurement Guide for Installers, EPCs, and Contractors Panel pricing is rarely the...
Solar Microgrids: How Communities Can Build More Resilient Energy Systems
Last Updated: August 2026 • A Practical Overview for Municipalities, Campuses, and Community Organizers A single home with...
AI + Solar Energy: How Artificial Intelligence Is Changing Solar System Design
Last Updated: August 2026 • An Industry Overview for Installers, Contractors, and Property Owners Solar system design used...
Volts to Amps Conversion: How to Calculate Amps from Volts (Calculator 2026)
Volts to Amps: How to Calculate Current from Voltage Volts alone can't make amps — add watts or...
MWh to kWh Conversion: Megawatt-Hours to Kilowatt-Hours Calculator (2026)
MWh to kWh: Calculator, Formula & Chart Megawatt-hours to kilowatt-hours in one step — with the storage and...
Watts to Kilowatts Conversion: W to kW Calculator + Chart (2026)
Watts to Kilowatts: Calculator, Formula & Chart The W → kW conversion in one step — plus the...
kVA to Amps Calculator: Single-Phase & Three-Phase Conversion (2026)
kVA to Amps: Calculator & Conversion Guide Single-phase and three-phase full-load current at any voltage — with NEC...
mA to Amps Conversion: Milliamps to Amps Calculator + Chart (2026)
mA to Amps Conversion: Calculator, Formula & Chart Convert milliamps to amps (and back) instantly — with NEC...
Wire Ampacity Calculator (NEC 310.16): Copper & Aluminum by Gauge
Interactive NEC 310.16 ampacity calculator: applies the 125% continuous-load rule, ambient temperature correction, and bundling adjustment to find...
Generator Sizing Calculator: Running + Starting Watts to the Right kW
Interactive generator sizing calculator with a build-your-own load list: running watts plus largest starting surge plus 25% headroom,...
Solar Panel Sizing Calculator: How Many Panels Does Your Home Need?
Interactive solar array sizing calculator: monthly kWh, peak sun hours, and system efficiency in; array kW, panel count,...
Battery Runtime Calculator: Ah to Hours With DoD & Inverter Losses
Interactive battery runtime calculator: capacity in Ah or Wh, derated by depth of discharge and inverter efficiency, divided...
Voltage Drop Calculator: NEC 3%/5% Rule, Formula & Wire Size Charts
Interactive voltage drop calculator with NEC 3%/5% guidance. Single-phase and three-phase, copper and aluminum, with circular-mil tables, worked...
Off-Grid Battery Bank Sizing Calculator: kWh, Amp-Hours & Autonomy Days
Interactive battery bank sizing calculator: daily kWh, autonomy days, DoD, and inverter efficiency in — bank kWh, amp-hours,...
Solar Payback Calculator: Payback Period & 25-Year Savings (2026)
Interactive solar payback calculator: system cost, incentives, production, and utility rate in — simple payback, 25-year savings, and...
EV Charger Circuit Calculator: Breaker & Wire Size per NEC 625 (125% Rule)
Interactive EV charger circuit calculator: charger amps to breaker and wire size under the NEC 625 125% continuous-load...
Service Entrance Load Calculator: NEC 220 Standard Method (Sq Ft + Appliances + HVAC)
Interactive NEC Article 220 standard-method load calculator: square footage, appliances, range, dryer, HVAC, and EV charging in —...
Conduit Bending Calculator: Offset Multiplier & Shrinkage Math (10°/22.5°/30°/45°)
Interactive conduit offset bending calculator: multiplier, shrinkage, and mark spacing for 10°, 22.5°, 30°, and 45° bends —...
LADWP and Investor-Owned Utility RFPs - A Bidder's Guide for Electrical and Renewable Equipment Supply
LADWP and Investor-Owned Utility RFPs -A Bidder's Guide for Electrical and Renewable Equipment Supply Responding to Los Angeles...
Federal Contractor Buy-American Electrical Requirements - FAR 52.225 Compliance for Electrical, Solar, and Grid Equip...
Federal Contractor Buy - American Electrical Requirements - FAR 52.225 Compliance for Electrical, Solar, and Grid Equipment How...
State Cooperative Purchasing Programs for Electrical Equipment - Sourcewell, OMNIA, TIPS, NASPO ValuePoint
State Cooperative Purchasing Programs for Electrical Equipment - Sourcewell, OMNIA, TIPS, NASPO A working guide to the four...
Federal Solar RFP Response Template Library - Section L/M Compliance, Past Performance, and Bid Package Structure
Federal Solar RFP Response Template Library - SF-33 to Past Performance to BABA Cert Every federal solar solicitation...
GSA Schedule Roadmap for Electrical and Solar Suppliers - Multiple Award Schedule Application, Award, and Task Order ...
GSA Schedule Roadmap for Electrical + Solar Distributors and the Contractors Who Sell Through Them A distributor-perspective walkthrough...
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Solar Panels Generators Batteries EV Chargers Circuit Breakers Charge Controllers Commercial SolarBlog posts
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Solar Panels + EV Charging: How to Build an Energy-Efficient Home
Last Updated: August 2026 • A Practical Guide for Homeowners Combining Solar and EV Charging An electric vehicle is, from a home electrical standpoint, one of the largest single loads...
Solar Panels + EV Charging: How to Build an Energy-Efficient Home
Last Updated: August 2026 • A Practical Guide for Homeowners Combining Solar and EV Charging An electric vehicle is, from a home electrical standpoint, one of the largest single loads...
-
Solar Panel Wholesale Pricing: What Installers Should Know in 2026
Last Updated: August 2026 • A Procurement Guide for Installers, EPCs, and Contractors Panel pricing is rarely the line item installers get wrong on a bid — it's usually the...
Solar Panel Wholesale Pricing: What Installers Should Know in 2026
Last Updated: August 2026 • A Procurement Guide for Installers, EPCs, and Contractors Panel pricing is rarely the line item installers get wrong on a bid — it's usually the...
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Solar Microgrids: How Communities Can Build More Resilient Energy Systems
Last Updated: August 2026 • A Practical Overview for Municipalities, Campuses, and Community Organizers A single home with solar and a battery can keep the lights on during an outage....
Solar Microgrids: How Communities Can Build More Resilient Energy Systems
Last Updated: August 2026 • A Practical Overview for Municipalities, Campuses, and Community Organizers A single home with solar and a battery can keep the lights on during an outage....
