New Study Sheds Light on Dominion-NextEra Merger Ramifications

Energy Ventures Analysis published a new study this week, “Evaluating the Continued Operation of Dominion Energy’s Coal-Fueled Generation in South Carolina.” This analysis, from a respected Virginia-based firm, indicates that should the merger of Dominion Energy South Carolina and NextEra Energy be approved by the South Carolina Public Service Commission, the new entity should resist the urge to mothball Dominion coal plants prematurely. 

 The report argues that Dominion Energy South Carolina should preserve the option to operate the Wateree and Williams coal plants beyond their planned 2032 and 2034 retirements. 

 Dominion Energy South Carolina’s own modeling shows that keeping Williams through 2046 could reduce projected 2040 retail rates by about 6.4%, defer replacement investments, and maintain reliability. Under higher demand, the model retains Wateree through 2044 and Williams through 2046.  

 The report also warns that earlier retirement would increase dependence on unfinished gas projects (generation, pipeline, and transmission) while reducing fuel diversity and winter reliability. 

 The importance of the Energy Ventures study at this point in time is that it speaks to a concern some analysts have over what is, in essence, a NextEra takeover of Dominion South Carolina. Will NextEra run away from coal unnecessarily as it has done in its current operations? 

 Such a precipitous move would politicize energy generation in the Palmetto State and lead to higher bills for South Carolina ratepayers.