EPA has published an updated XML reporting schema Version v3.1 for RY2012 which allows facilities to upload their greenhouse gas (GHG) data directly in lieu of using the web forms provided through the Electronic Greenhouse Gas Reporting Tool (e-GGRT). Please note this XML schema Version v3.1 WILL NOT BECOME EFFECTIVE until e-GGRT is made available for 2012 reporting in mid-February (currently e-GGRT will only accept 2011 and 2010 data). XML based reporting submitted after e-GGRT is open for RY2012 reporting must be consistent with schema Version v3.1. Once in effect, this new schema Version v3.1 must also be used for any submissions of previous RY2011 or RY2010 reports, including reports for RY2010 and RY2011 that are resubmitted with equation input data. The XML reporting schema Version v3.1 and supporting materials are published at XML Reporting Instructions. Additional materials (i.e. subpart specific reporting instructions) will be added when they are ready.