Affiliate Disclosure
Short version: when you buy a part through a link on this site, we sometimes earn a small commission. It costs you nothing extra, and it never decides what we recommend. The long version is below, in plain language.
How Off Grid Authority makes money
Off Grid Authority is a free, independent reference. We have no paywall and no sponsored "advertorial" content. To keep the lights on and pay for the time spent researching specs, we participate in affiliate programs. The main one is the Amazon Associates Program, an affiliate advertising program designed to provide a way for sites to earn fees by linking to Amazon.com and affiliated sites. Our Amazon links carry the tracking tag onamzashl042b-20. We may add other affiliate programs over time — for example manufacturers or specialty solar retailers — and this page will be updated when we do.
Your price never changes
When you click an affiliate link and buy something, you pay the exact same price you would pay otherwise. The commission comes out of the retailer's margin, not your wallet. There is no markup, no surcharge, and no "affiliate price." If anything, you are helping fund the research that goes into these pages at zero cost to yourself.
Commissions do not buy our recommendations
This is the line that matters most. We pick products by research, not by payout. Recommendations come from comparing manufacturer datasheets, spec sheets, warranty terms, and the relevant NEC/ABYC code requirements — the same way we compile every figure on the site. A higher commission rate has never moved a product up a list, and a product with no affiliate link at all can still be our top pick. If the best answer for your build is a part we earn nothing on, that is the part we will tell you to buy. Editorial decisions and revenue are kept separate on purpose.
How to spot an affiliate link
You do not have to guess. Affiliate links on this site point to a retailer (most often Amazon) and carry our tag in the URL — you can hover over any "buy" or product button to see it. Shoppable parts lists, "check price" buttons, and product cards in our buying guides should all be assumed to be affiliate links. Plain reference content — calculators, wiring diagrams, code explanations, and internal links to our own guides — is not monetized. When in doubt, assume any outbound link to a store is an affiliate link; that is the safe and honest assumption.
Why we disclose this
U.S. Federal Trade Commission (FTC) guidelines require sites to clearly tell readers when they earn from the links they publish. We agree with the rule and would disclose it anyway. You deserve to know how a site you are taking advice from pays its bills, so you can weigh the advice accordingly. We would rather you trust the research than wonder whether a recommendation was bought.
Questions or corrections
If something here is unclear, or you think a recommendation looks compromised, tell us — we take that seriously. The fastest way to reach us is the contact & corrections page. We read every message and we will explain our reasoning or fix the page.