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Indiana Michigan Power Nuclear Decommissioning Trust
The Indiana Michigan Power Nuclear Decommissioning Trust funds the shutdown of the Donald C. Cook Nuclear Plant under NRC oversight.
Indiana Michigan Power Nuclear Decommissioning Trust
The trust exists as a regulatory requirement, established to set aside the funds that Indiana Michigan Power will need when the twin-unit Cook plant in Bridgman, Michigan reaches the end of its licensed life. American Electric Power, the utility's Columbus, Ohio-based parent, administers the trust; the Nuclear Regulatory Commission mandates minimum funding targets and restricts how assets can be deployed. The corpus grows through annual contributions collected from ratepayers and through investment returns on the trust portfolio. Asset allocation is shaped by safety and liquidity constraints that leave little room for venture-style risk. The trust holds a mix of fixed-income securities, public equities, and permitted alternative investments structured to preserve principal while outpacing decommissioning cost escalation. Because the liability is measured in future dollars across a multi-decade horizon, the investment committee runs a liability-driven framework, matching duration and inflation sensitivity against projected site-remediation and waste-storage costs. A securities-lending program provides a modest incremental return on long-duration holdings without deviating from the ultra-conservative risk budget. The trust's scale is tied directly to NRC-mandated cost studies and AEP's rate-case settlements with Indiana and Michigan regulators. No external fundraising occurs; the vehicle administers a single dedicated pool governed by a tripartite oversight structure — AEP treasury, state utility commissions, and the NRC. The International Brotherhood of Electrical Workers Local 1392, which represents Cook plant personnel, monitors trust adequacy because underfunding could accelerate job losses if the plant enters SAFSTOR rather than immediate dismantlement. What distinguishes the Cook decommissioning trust from a typical family-office pool is its statutory handcuffs. The trust cannot redeploy capital into adjacent industries, cannot pursue opportunistic co-investments, and cannot shift its mandate. Every dollar belongs to a pre-defined environmental liability, and withdrawal timing is governed by the physical condition of nuclear systems and the availability of a permanent spent-fuel repository — a dependency the federal government has yet to resolve.
General information
Firm type
Trust
Year founded
—
AUM
Undisclosed
Location
Region
North America
Country
United States
City
Fort Wayne
Corporate office
Fort Wayne, IN, United States
Sector focus
Frequently asked questions
What is the legal mandate of the trust?
The trust exists solely to accumulate and disburse funds for decommissioning the Donald C. Cook Nuclear Plant in Bridgman, Michigan. Its structure is prescribed by Nuclear Regulatory Commission regulations, which require Indiana Michigan Power to demonstrate reasonable assurance that adequate funds will be available when the plant's operating licenses expire. The NRC reviews trust adequacy biennially based on site-specific cost estimates.
How is the trust funded?
Capital flows from ratepayer contributions collected through Indiana Michigan Power's regulated electricity rates. Annual funding levels are set in rate cases before the Indiana Utility Regulatory Commission and the Michigan Public Service Commission. Investment income earned on trust assets reduces the total contribution requirement, creating a direct link between portfolio performance and customer bills.
What investment constraints apply?
NRC regulations and Internal Revenue Code Section 468A impose strict limits on trust investments. Permitted asset classes are generally restricted to marketable securities and certain fixed-income instruments; private equity, venture capital, and speculative commodities are typically excluded. The NRC requires the trust to be managed in a manner consistent with nuclear decommissioning fund guidelines that emphasize liquidity and principal preservation.
Who administers the trust's investment portfolio?
American Electric Power, through its subsidiary Indiana Michigan Power, administers the trust. AEP's treasury function oversees investment policy and manager selection, subject to NRC reporting and the oversight of state utility commissions. Third-party asset managers and a securities-lending agent handle day-to-day portfolio execution.
When will funds begin to be drawn from the trust?
Withdrawals commence when the Cook plant permanently ceases operations and active decommissioning begins. Unit 1's operating license expires in 2034 and Unit 2's in 2037, though either unit could retire earlier. The actual draw schedule depends on whether Indiana Michigan Power elects immediate dismantlement or a deferred SAFSTOR approach.
How does spent-fuel management affect the funding requirement?
The federal government is legally obligated to accept and dispose of spent nuclear fuel but has no operating permanent repository. Until one opens, spent fuel remains in dry cask storage at the Cook site, extending the trust's liability horizon and increasing total decommissioning cost estimates per NRC site-specific analyses.
Are trust assets separable from Indiana Michigan Power's general corporate funds?
Yes. NRC regulations require the trust to hold assets in a separate legal vehicle, insulated from the utility's creditors, and used exclusively for decommissioning. This bankruptcy remoteness is a core condition of the plant's NRC operating license.
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