Applicability 

• Title V Facilities under the Federal Clean Air Act (implemented under 310 CMR 7.00: Appendix C)
• Facilities that emit greater than 5,000 tons/year Carbon Dixoide Equivalent (CO2e)
• All retail sellers of electricity (electric distribution companies, municipal electric departments, municipal light boards, competitive suppliers)

Facilities

• 2009 carbon dioxide (CO2) emissions must be reported by April 15, 2010.
• Starting in 2010 (and each year thereafter) emissions from certain greenhouse gases - CO2, methane (CH4), nitrous oxide (N2O), sulfur hexafluoride (SF6), hydrofluorocarbons (HFCs) and perfluorcarbons (PFCs) - must be reported by April 15 of the following year.

Retail Sellers

• Each year, MassDEP will draft , and post on its web site, GHG Emission Factors. Interested parties will have the opportunity to comment on MassDEP's methodology, data sources and calculation. 
• A month after MassDEP has posted the final annual Emission Factors, retail sellers will report their GHG emissions by multiplying annual Emission Factors by the number of megawatt hours (MWh) the retail sellers provided their customers.