Emissions Methodology (as of June 2008)
Methodology for North American Natural Gas Markets (as of July 2008)
Platts European Gas Methodology (as of December 2007)
Platts-ICE Forward Curve -- Natural Gas (North America) (as of October 2007)
Methodology: Frequently Asked Questions (as of April 2006)
Platts US Spark Spreads Methodology (as of April 2001)

Related material

Platts to add SoCal city-gate posting, seeks comments on other SoCal locations (August 2008)
Platts to add five spot-gas postings on September 1, seeks comments on others
2008 monthly bidweek calender
Formats for Submitting Price Data in North American Natural Gas
(Right-click on the link to save file to your desktop, then open file with a spreadsheet application to view file.)
Liquidity in North American Monthly Gas Markets (as of July 2008)
(Right-click on the link to save file to your desktop, then open file with a spreadsheet application to view file.)
European Power—Frequently Asked Questions (currently being updated)

In order to view the methodologies you will need Adobe Acrobat Reader. If it is not already installed on your PC, click here to download the free Adobe Acrobat Reader.