Methodology & Standards is the byline attached to rubric-version notes, calibration changes, corrections, and disclosure updates. When a scoring criterion changes, when a band is reclassified, or when an error is corrected, this desk carries the explanation and the evidence behind it. The rest of the masthead is held to the same discipline.
Published under this byline
An estimate and a datasheet figure used to score the same. They no longer do.
From rubric versions 2.9.0, 3.6.0 and 1.2.0, a criterion recorded as an editorial estimate is pulled 25% of the way toward the non-disclosure floor. 37 of 122 published scores moved, none by more than five points, and no product changed class. This note records what changed and why, because a score you read last week may read differently today.
Three names on a spec sheet. Only one of them is about quality.
BNEF Tier-1, Kiwa PVEL and ITP Renewables get quoted interchangeably in Australian solar marketing as though they all mean the product is good. They measure three different things, one of them is not about the product at all, and one of the programmes has finished. What each is genuinely decisive for.
Battery rubric v2.3: three structural changes and the evidence behind them.
LMFP and sodium-ion split into separate bands. V2G earns a new 90-point tier. HTW Berlin RSP/SPI becomes the preferred efficiency source. Here is the peer-reviewed evidence behind each decision.