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MPPT Solar Charge Controllers: Sizing, Selection & Wiring
An installer's guide to MPPT solar charge controllers for battery-based PV systems. Covers sizing, ratings, battery chemistry, wiring, manufacturer comparison, and field troubleshooting.
Sarah Lozanova
16 hours ago
2023 NEC Solar Code Guide for Installers
A practical guide to the 2023 NEC solar code for installers, covering Article 690, rapid shutdown, labeling, source connections, grounding, ESS, and the permit details that can prevent redlines.
Sarah Lozanova
5 days ago
Solar Panel Wiring Guide for Installers in 2026
A huge part of any solar project is how to wire the solar panels. Explore our guide on solar panel wiring to learn best practices.
Team GreenLancer
Apr 17
Ground Mount Solar Permit Requirements Guide
Guide to ground mount solar permit requirements, structural engineering, setbacks, NEC 690, wind loads, grounding, and permit package needs for installers.
Sarah Lozanova
Apr 13
Solar Interconnection Agreement: Step-by-Step Process
Learn how the solar interconnection agreement process works, which review track applies to your project, and how to get utility approval and solar PTO faster.
Sarah Lozanova
Apr 7
Solar Licensing Requirements by State for Contractors
Understand solar licensing requirements by state — from dedicated solar contractor licenses to electrical credentials, so you can install legally, pull permits, and scale into new markets with confidence.
Sarah Lozanova
Apr 2
Solar String Sizing Guide for Installers
It's decent but "happy solar inverters" is too casual for an installer audience and wastes character space. Here's a tighter version with keywords:
Learn how to calculate solar string size, avoid common PV string sizing errors, and keep your inverter operating within safe voltage and current limits.
Sarah Lozanova
Mar 27
Solar Certification: How to Become a Certified Solar Installer in 2026
Solar installer certification can help you build credibility, understand licensing requirements, and grow your skills for installs, upgrades, battery retrofits, and solar repairs as systems age.
Sarah Lozanova
Feb 13
What Is MPPT? The Key to Optimizing Solar Output
MPPT in solar systems uses a maximum power point tracking algorithm to keep the PV array operating at the best voltage and current, improving energy harvest in solar inverters and MPPT charge controllers, especially as irradiance, temperature, and shading change.
Sarah Lozanova
Feb 12
How to Perform A Solar Site Survey
The solar site survey is a crucial step in the installation process. We provide a solar site survey checklist and our top tips.
Sarah Lozanova
Jan 19
A Guide to Commercial Solar Panel Installation
Commercial solar panel installations are fundamentally different from residential solar projects. Read our guide on getting started.
Sarah Lozanova
Dec 19, 2025
Solar Roofing Company: How to Launch Your Dual-Service Firm
As a roofing contractor, there are compelling reasons to rebrand your business as a roofing and solar installation company. This guide explains the why and how of getting started.
Austin Brentley
Dec 3, 2025
Adding A Battery To An Existing Solar System
Learn about the benefits, costs, and key considerations of adding a battery to a solar system. Is it worth it?
Sarah Lozanova
Dec 1, 2025
Bifacial Solar Panel Installation: A Quick Guide
Bifacial solar panel installation requires careful planning, from site assessment to maintenance, to maximize energy production.
Sarah Lozanova
Oct 18, 2025
Understanding NEM 3.0 In California
California’s NEM 3.0 rules are a huge topic in the solar industry. See how NEM 3.0 could affect net energy metering.
Sarah Lozanova
Jul 24, 2025
GreenLancer solar blog
The Renewable Energy Blog
The GreenLancer blog delves into the latest trends and insights in renewable energy, offering information and inspiration for solar energy and electric vehicle charging station (EVCS) contractors. Our commitment is to provide accurate information, supported by meticulous analysis and reliable clean energy sources, including government agencies, renewable energy experts, research institutions, and our in-house expertise, from over a decade in the clean energy industry.
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