Editorial Policy
By Avery Brooks · Last reviewed Three commitments govern every WattRank page: claims are sourced (primary sources for anything legal or technical), pages are dated and updated when the facts change, and commercial relationships never touch editorial conclusions. This page spells out what each commitment means in practice.
Sourcing standards
Legal claims cite the primary record — the bill, statute, regulator publication or official register — not a vendor's summary of it, and we never describe plug-in solar as illegal solely because a jurisdiction lacks a framework. Certification claims must be verifiable in a public directory before we repeat them; UL 3700 in particular is described as what it currently is, an Outline of Investigation with no system-level certified products. Performance and savings figures come from independent measurements wherever they exist, and when we must use a vendor figure we label it as one. Product prices carry the date they were verified.
Updates and corrections
This category moves — bills pass, consultations close, certifications land, prices shift — so pages carry a last-reviewed date and the legality tracker is our highest-frequency maintenance commitment. When we get something wrong, we fix the page and, for material errors, note the correction on it. Readers who report an error with a source go to the front of the queue.
Commercial separation
WattRank may earn referral commissions on some outbound links, disclosed on the pages where they apply. The wall is simple: comparisons follow the published research methodology, and no vendor can pay for placement, a better assessment, or the removal of an unfavorable finding. When we cite third-party laboratory results, we name and link the source rather than implying WattRank performed the test. Sponsored content, if we ever publish it, will be clearly labelled; as of 2026 we publish none.