Solar articles

Free Solar knowledge from the Manuall Trade Library: diagnostic trees, SOPs, estimating and pricing guidance, and the business side of running a shop. No account needed; read it, share it, put it to work.

138 articles

Reference BusinessOperations

Working With Utility Companies Reference

Electrical · Plumbing · HVAC · Solar

Reference Safety

UL 9540A + Battery Storage Safety

Electrical · Solar

Reference Equipment

Solar PV Basics for Trade Service Reference

Electrical · Roofing · Solar

Reference Process

Sales Rep Recruiting + Training Program

HVAC · Plumbing · Electrical · Roofing · Solar

Reference Process

Sales Metrics + Dashboards

HVAC · Plumbing · Electrical · Roofing · Solar

Reference Process

Sales Incentive + Commission Design

HVAC · Plumbing · Electrical · Roofing · Solar

Reference Equipment

Reading Roof Age + Condition Reference

Roofing · HVAC · Solar · Cleaning

Reference BusinessOperations

Reading Customer's Electric Bill Reference

HVAC · Electrical · Solar

Reference Equipment

Ladder + Scaffold Safety Reference

HVAC · Roofing · Painting · Gutters · Chimney Sweep · Garage Door · Solar

Reference Equipment

Jobsite Safety Walkthrough Reference

HVAC · Plumbing · Electrical · Roofing · Painting · Garage Door · Appliance Repair · Carpet Cleaning · Pest Control · Solar

Reference Process

IRA Tax Credits and Rebates for Home Energy - 2025 Reference

HVAC · Solar · Electrical

Reference Process

HOA + Property Restriction Awareness Reference

Roofing · HVAC · Solar · Lawn Care · Painting

Reference Process

Heat Transfer + Thermodynamics for Field Trades

HVAC · Plumbing · Solar

Reference Process

Energy Code (IECC) for Residential Construction

HVAC · Electrical · Plumbing · Roofing · Solar

Reference Equipment

Electrical Conversions + Field Math Reference

Electrical · HVAC · Solar

Reference Equipment

Drone Inspection Basics Reference

Roofing · HVAC · Solar

Reference Equipment

Common Knots + Rope Work Reference

Roofing · Tree Service · Gutters · Locksmith · Solar · Electrical

Reference Equipment

Bidirectional EV Charging (V2H + V2G)

Electrical · Solar

Reference Equipment

Residential Battery Storage Reference

Electrical · Solar

How-to Guide Process

Sales Coaching Program (Owner + Manager)

HVAC · Plumbing · Electrical · Roofing · Solar

How-to Guide Process

Sales Objection Handling (Deep Reference)

HVAC · Plumbing · Electrical · Roofing · Solar

How-to Guide Process

High-Ticket Equipment Sales

HVAC · Plumbing · Electrical · Roofing · Solar

Troubleshooting Safety

Why Did the PV Breaker Trip: Overcurrent vs Ground vs Nuisance Decision Tree

Solar

Troubleshooting Safety

Solar Why Did Ground Fault Protection Trip: Moisture vs Insulation vs Sensor Decision Tree

Solar

Troubleshooting Diagnostics

Which Test First Isolation vs String Voltage vs Ground Fault On No Output Decision Tree

Solar

Troubleshooting Diagnostics

Which String To Isolate First When Array Underproduces Sequencing Decision Tree

Solar

Troubleshooting Diagnostics

Which Meter To Trust First Utility vs Production vs Consumption On Dispute Decision Tree

Solar

Troubleshooting Diagnostics

String Voltage Low After a Module Replacement

Solar

Troubleshooting Diagnostics

String Imbalance Three vs One String Decision Tree

Solar

Troubleshooting Diagnostics

Stain Or Streak Under Panels On Roof Leak vs Soiling Runoff Decision Tree

Solar