EPA has published an updated XML reporting schema Version v4.1 for RY2013 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 v4.1 WILL NOT BECOME EFFECTIVE until e-GGRT is made available for 2013 reporting in mid-February (currently e-GGRT will only accept 2010, 2011 and 2012 data). XML based reporting submitted after e-GGRT is open for RY2013 reporting must be consistent with schema Version v4.1. Once in effect, this new schema Version v4.1 must also be used for any submissions of previous RY2010, RY2011 or RY2012 reports. The XML reporting schema Version v4.1 and supporting materials are published at XML Reporting Instructions. Additional materials (i.e. subpart specific reporting instructions) will be added when they are ready.