Industry Insights May 10, 2026

How to Size an Off-Grid Solar Battery System (Step-by-Step Calculator)

A step-by-step off-grid battery sizing workflow using daily kWh, autonomy days, usable DoD, inverter losses, and cold-weather derating.

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Industry Insights Apr 26, 2026

LFP vs NMC Home Batteries: A Complete 2026 Comparison

For years NMC dominated residential batteries. By 2026, LFP has become the technically correct choice in nearly every scenario. Here's what changed and why it matters for your specs.

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Certifications & Compliance Apr 26, 2026

UL9540 Certification Explained: What Solar Installers Need to Know in 2026

UL9540 has become the deciding factor between residential battery projects that get permitted and those that don't. This guide explains what it is, how it differs from UL1973 and UL9540A, and what to verify before you quote.

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