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Failed S.C. nuclear plant spurs credit downgrade, political battles, lawsuits

virgil summer, locator map

The Virgil C. Summer Nuclear Generating Station was under construction north of Columbia, S.C. when work was halted for reasons including cost overruns and delays. Credit: mapquest.com, David Pendered

By David Pendered

Just as Georgia Power’s credit was downgraded this month for financial losses related to Plant Vogtle, Moody’s Investors Service has downgraded the rating of bonds issued by the South Carolina Public Service Authority for an aborted nuclear plant in the Palmetto State. But that’s just part of the story.

South Carolina’s failed nuclear plant has spawned a political storm that Moody’s analysts addressed in their Aug. 17 rating action. The debt was shouldered to build the Virgil C. Summer Nuclear Generating Station, which, like Vogtle, incurred cost overruns and construction delays. Unlike Vogtle, Summer’s construction was halted.

Meanwhile, published reports portray a maelstrom that involves billions of dollars in debt and no clear path forward:

  • The governor is a defendant in a lawsuit filed by the head of the state Senate. The lawsuit seeks to halt the installation of a man the governor appointed as interim chair for the state-owned utility authority, a utility named Santee Cooper;
  • The Senate declined to confirm the same man when the governor nominated him, during the legislative session, to serve as board chair;
  • The board has been without a chair since the prior chair resigned Dec. 29, 2017 over criticism of the decisions regarding the aborted power plant;
  • A wholesale distributor of electricity filed a lawsuit in February against the state authority, Santee Cooper, to validate the distributor’s right to withdraw from the deal if the authority were to try to raise rates on the distributor’s customers. A trade publication observed: “That could ruin Santee financially.”
virgil summer, locator map

The Virgil C. Summer Nuclear Generating Station was under construction north of Columbia, S.C. when work was halted for reasons including cost overruns and delays. Credit: mapquest.com, David Pendered

Billions of dollars are at issue and the timeline on the debt service extends to 2056.

As of 2016, the state authority had borrowed $3.7 billion to pay for its share of the construction costs at the nuclear plant.

That figure appears in terms of a bond package valued at $831.4 million. The state authority intended to use nearly $98 million to refinance in 2020 previous debt at a rate lower than the 5 percent now being charged. The remainder is to pay for construction and related costs, according the document provided by emma.msrb.org.

Of note, the source of money to repay the debt is the revenue from electricity to be created by a planned nuclear plant that now won’t be built. State taxpayers are not on the hook for any of the debt. Ratepayers could be on the hook, and that was the motive behind the lawsuit filed by the wholesale distributor.

Nikki Haley, now the U.S. ambassador to the United Nations, served as governor and thus served on the authority’s advisory board when the bond sale was approved, according to the bond documents.

Moody’s analysts reviewed this scenario and saw a glass half full.

The authority’s credit rating was dropped by one notch, from A2 to A1, for the revenue bonds. This rating is viewed as upper medium grade, and subject to low credit risk.

Analysts contend the state authority is in a fairly strong financial position. Uncertainty created by the pending lawsuit filed by the distributor, and “governance challenges” at the state authority, prompted the future outlook to be notched as negative.

virgil summer site plan

A site plan of the Virgil Summer nuclear plant depicts a project that would provide compact factory for generating electricity. Credit: nuclearstreet.com

One key factor in the fairly favorable overview was the state Legislature’s decision not to challenge the authority’s sole capacity to set rates to meet debt payments in a timely fashion, analysts observed:

  • “We believe that these events were supported by an existing state statute that prohibits the state from doing anything including enacting new laws that would impact bond covenant compliance. The existence of this state statute is a credit positive feature for Santee Cooper’s bondholders.
  • “We also observe that notwithstanding the governance challenges at Santee Cooper, the utility has implemented a financial recovery plan based upon management’s schedule including using the Toshiba funds to mitigate any rate increases through 2020, while maintaining debt service coverage in the 1.40x range.”

Finally, analysts comments on the role the authority, Santee Cooper, fulfills in the state:

  • “Santee Cooper still remains a competitive and reliable electric utility, even after an expected rate increase in 2020, that continues to provide services to a major portion of the state. The utility has an important and well established state role in economic development, flood control and water supply, and remains an important asset for the State of South Carolina (Aaa stable).”


David Pendered

David Pendered, Managing Editor, is an Atlanta journalist with more than 30 years experience reporting on the region’s urban affairs, from Atlanta City Hall to the state Capitol. Since 2008, he has written for print and digital publications, and advised on media and governmental affairs. Previously, he spent more than 26 years with The Atlanta Journal-Constitution and won awards for his coverage of schools and urban development. David graduated from North Carolina State University and was a Western Knight Center Fellow.


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