Because of the close proximity of their implementation, combined with the potential devastating impact, the following EPA Rules and Regulations have come to be known collectively as the "train wreck":

• Utility MACT (Maximum Achievable Control Technology); Read ERCC Comments
• The Clean Air Transport Rule (CSAPR), replacement for the Clean Air Interstate Rule;
• Coal Combustion Residuals or By-products (CCRs) rules;
• National Ambient Air Quality Standards (NAAQS) for SO2, NO2, Ozone, and PM;
• Rules pertaining to control of global greenhouse gases;
• New Source Review on new and modified sources for greenhouse gases and other emissions; Read ERCC Comments
• Section 316(b) rules regarding plant cooling water intake structures; and,
• Effluent guidelines for electric utilities

These EPA Rules and Regulations will have a significant impact on the roughly 400,000 megawatts of oil- and coal-fired generation, which is about 40% of the current available capacity in the U.S., and makes up nearly 50% of total U.S. electricity generation. Adaption to all these rules, with Utility MACT being the most immediate threat, constitutes an extraordinary – and dangerous – challenge to the power sector.