Solar panel spec sheets are full of numbers, but only a few actually matter when you compare quotes. This beginner-friendly USA guide explains STC, NMOT, efficiency, temperature coefficient, warranties, and the red flags homeowners should catch before signing.
A solar site plan is the layout page in your quote or permit set that shows where panels and equipment will go on your home. This beginner-friendly USA guide explains how to read it, what details matter most, and which questions to ask before you approve the design.
Your installer’s solar quote or permit set may include a one-line diagram packed with symbols, breakers, disconnects, and equipment labels. This beginner-friendly USA guide explains what a solar one-line diagram is, how it differs from a site plan, what homeowners should look for, and which questions to ask before approving a design.
Homeowners often hear “backfeed breaker,” “line-side tap,” or “supply-side connection” during solar quoting—but few understand what those terms mean. This guide explains the difference between load-side and supply-side solar interconnection in plain English, why panel limits matter, when installers choose each method, and what questions to ask before approving a design.
A solar transfer switch helps backup-capable systems isolate your home from the grid and move selected loads to battery power during outages. This beginner-friendly U.S. guide explains manual vs automatic switching, critical loads panels, whole-home vs partial backup, and what to ask your installer—without risky DIY.
A solar AC disconnect is the extra shutoff box some grid-tied systems have near the meter or service equipment. This guide explains what it does, how it differs from rapid shutdown, why some utilities still require a visible open lockable disconnect, and what homeowners should ask before signing a quote.
Surge protection is one of the most overlooked “reliability” decisions in rooftop solar. This homeowner guide explains what solar surges are (lightning and grid switching), the difference between a whole-home surge protector and solar PV SPDs, what labels and standards matter (UL 1449 and IEC 61643 on datasheets), typical costs, and a copy/paste checklist to get everything in writing—without any risky DIY.
Rapid shutdown is a solar safety feature required on many rooftop systems in the USA. This homeowner guide explains what it is (and what it isn’t), where the shutdown switch/labels are, how different inverter designs meet the rule, what UL 3741 means, and a copy/paste checklist to protect you before you sign—without risky DIY steps.
Solar loans can be a smart way to own a system—until “dealer fees” inflate the financed price or your payment jumps in month 19 because a tax-credit prepayment was assumed. This guide explains dealer fees in plain English, shows an apples-to-apples comparison method, and gives you a copy/paste checklist to protect yourself.
A “new roof before solar” isn’t always required—but getting the timing wrong can create expensive remove-and-reinstall work, leak disputes, and warranty headaches. Use this simple homeowner decision framework (plus a copy/paste checklist) to decide whether to replace now, repair and proceed, or install solar first—safely and confidently in the USA.
