Clearly defined and transparent methodologies are the backbone of Platts’ price assessment processes. Platt’s methodologies provide detailed descriptions and explanations of how we assess the market value of commodities so that customers and other interested parties understand those processes. In this section, we post documentation by commodity and region for all published price assessments and indices.

Coal methodology
(as of September 2010)

Metallurgical Coal methodology
(as of August 2010)

Emissions methodology
(as of July 2010)

Platts spark spreads methodology
(as of September 2008)