AM Best Affirms Credit Ratings of Nuclear Electric Insurance Limited and Its Subsidiaries

OLDWICK, N.J.--(BUSINESS WIRE)--AM Best has affirmed the Financial Strength Rating of A (Excellent) and the Long-Term Issuer Credit Ratings of “a+” (Excellent) of Nuclear Electric Insurance Limited (NEIL) (Wilmington, DE) and its subsidiaries, Cedar Hamilton Limited (Cedar Hamilton) (Hamilton, Bermuda) and NEIL Overseas Designated Activity Company (NEIL Overseas) (Dublin, Ireland). The outlook of these Credit Ratings (ratings) is stable. Cedar Hamilton and NEIL Overseas are wholly owned subsidiaries of NEIL. Cedar Hamilton provides specialty lines capacity to NEIL’s members, and NEIL Overseas underwrites insurance programs for nuclear power stations within the European Union.

The ratings reflect NEIL’s balance sheet strength, which AM Best assesses as strongest, as well as its marginal operating performance, favorable business profile, and appropriate enterprise risk management.

The ratings also acknowledge NEIL’s management culture and its exclusive leadership position in the U.S. nuclear power-generating industry. NEIL essentially underwrites the entire nuclear utility property insurance coverage in the United States. NEIL continues with its mission of maintaining financial strength to cover two full-limit nuclear losses, while promoting nuclear industry risk management and safety practices.

Partially offsetting these positive rating factors are NEIL’s primary focus on property catastrophe risks and related business interruption claims, with the subsequent financial stress this could cause in the unlikely event of two full-limit losses. The company experienced an underwriting loss in 2024 mostly driven by wildfire events, illustrating the potential for volatility in underwriting results given the nature of the risks it insures. NEIL has experienced positive underwriting income in most recent years.

Nonetheless, NEIL designed its risk management program to manage risks within the company’s defined tolerance levels. NEIL also maintains a comprehensive loss prevention program, with a specialized, effective loss prevention department closely working with insured members to control losses. NEIL’s loss prevention effort is supported by a panel of employed and contract nuclear engineers.

The ratings also recognize NEIL’s history of maintaining sufficient capital to support its ongoing obligations, which includes its financial flexibility to suspend policyholder distributions. NEIL also has the contractual right to assess a retrospective premium for 10 times each member’s annualized premium, which strengthens its financial flexibility. To ensure that members’ capitalization is adequate to support such an action, NEIL requires members to maintain an investment-grade credit rating or provide collateral. This facility has never been used.

Key rating factors that could lead to a downgrading of NEIL’s ratings over the longer term include significant erosion or loss of capital, such as though the payment of an outsized dividend, loss of members and/or in the event of an extreme loss event.

This press release relates to Credit Ratings that have been published on AM Best’s website. For all rating information relating to the release and pertinent disclosures, including details of the office responsible for issuing each of the individual ratings referenced in this release, please see AM Best’s Recent Rating Activity web page. For additional information regarding the use and limitations of Credit Rating opinions, please view Guide to Best's Credit Ratings. For information on the proper use of Best’s Credit Ratings, Best’s Performance Assessments, Best’s Preliminary Credit Assessments and AM Best press releases, please view Guide to Proper Use of Best’s Ratings & Assessments.

AM Best is a global credit rating agency, news publisher and data analytics provider specializing in the insurance industry. Headquartered in the United States, the company does business in over 100 countries with regional offices in London, Amsterdam, Dubai, Hong Kong, Singapore and Mexico City. For more information, visit www.ambest.com.

Copyright © 2025 by A.M. Best Rating Services, Inc. and/or its affiliates. ALL RIGHTS RESERVED.