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DTE Energy Nuclear Decommissioning Trust

Angela Buk manages DTE Energy's $2.1B Nuclear Decommissioning Trust, a regulated multi-asset portfolio funding Fermi 2 cleanup in Michigan.

DTE Energy Nuclear Decommissioning Trust

The DTE Energy Nuclear Decommissioning Trust exists to fund the eventual dismantlement of the Fermi 2 Nuclear Generating Station in Newport, Michigan — a single-unit boiling water reactor owned by DTE Electric Company. DTE Energy, the Detroit-based utility holding company, established the trust as a qualified external sinking fund under NRC regulations, collecting decommissioning surcharges from Michigan ratepayers over the plant's operating life. David Ruud, DTE Energy's Vice Chairman and CFO, holds ultimate financial oversight, while Angela Buk directs day-to-day investment strategy as Chief Investment Officer. Buk allocates across a deliberately broad asset-class mix — domestic equities, international equities, fixed income, hedge funds, private equity, and real assets — to balance growth with the trust's long-dated liability profile. The trust's investment committee operates with a formal governance structure that includes JoAnn Chavez (Chief Legal Officer) and Mark Rolling (Treasurer), ensuring regulatory compliance alongside return objectives. Public records confirm the trust's equity exposure spans global markets, while its alternatives sleeve reaches into private equity and real assets — a configuration designed to outpace the inflation rate on nuclear decommissioning costs that can escalate sharply over decades. The trust reports approximately $2.1 billion in assets, placing it among the larger single-plant decommissioning trusts in the United States. Investment committee membership draws from DTE Energy's senior executive tier, with Chavez holding additional board seats at the Michigan Hispanic Chamber of Commerce and relationships threading into Detroit's professional networks. The trust's philanthropic ties flow through the DTE Energy Foundation, a separate corporate giving vehicle that supports Michigan community programs — entirely distinct from the trust's fiduciary mandate to ratepayers. What distinguishes this trust from a standard pension or endowment is its regulatory architecture. The NRC requires decommissioning trusts to maintain qualified status under IRS rules, limiting investment concentration and mandating periodic funding adequacy studies. Buk must manage a portfolio that satisfies both a liability-aware time horizon — Fermi 2's license runs through 2045 — and strict compliance with federal nuclear trust regulations, a structurally narrower mandate than what most institutional CIOs face. The trust's portfolio strategy cannot chase returns at the expense of liquidity mismatches, making its multi-asset construction a genuine exercise in constrained optimization.

General information

Firm type

Decommissioning Trust

Year founded

AUM

$2.1 billion (per Altss estimate)

Location

Region

North America

Country

United States

City

Detroit

Corporate office

Detroit, MI, United States

Principals

Angela Buk

Chief Investment Officer, DTE Energy

David Ruud

Vice Chairman and CFO, DTE Energy

JoAnn Chavez

Senior Vice President and Chief Legal Officer, DTE Energy

Mark Rolling

Vice President and Treasurer, DTE Energy

Sector focus

Energy Transition & RenewablesHedge FundsPrivate EquityReal EstateInfrastructureFixed Income

Frequently asked questions

Who runs investment decisions at DTE Energy's Nuclear Decommissioning Trust?

Angela Buk, DTE Energy's Chief Investment Officer, directs the trust's portfolio strategy. She reports into DTE Energy's investment committee, which includes Vice Chairman and CFO David Ruud, Chief Legal Officer JoAnn Chavez, and Treasurer Mark Rolling. All four officers hold formal roles in overseeing the trust's $2.1 billion multi-asset allocation.

What is the underlying source of wealth for this trust?

The trust is funded entirely by decommissioning surcharges collected from DTE Electric ratepayers over Fermi 2's operating life. These are regulated collections — not discretionary family wealth or corporate profits. The NRC mandates that utilities accumulate and ring-fence these funds to cover eventual plant dismantlement.

How does the trust's investment mandate differ from an endowment or pension fund?

The trust answers to NRC regulations requiring qualified trust status under the Internal Revenue Code, not to ERISA or UPMIFA. It must pass periodic funding adequacy tests proving the portfolio can cover a predetermined cost estimate. The liability cash flows are highly predictable but inflation-sensitive, forcing the CIO to balance equity exposure against severe liquidity constraints.

Does the trust invest directly in the Fermi 2 plant site?

No. The trust holds financial assets — equities, fixed income, hedge funds, private equity, and real assets — not the plant itself. DTE Electric retains ownership of the Fermi 2 facility and site through its regulated utility subsidiary. The trust's sole purpose is to provide cash to decommission that asset at end of life.

How far out does the trust's investment horizon extend?

Fermi 2's original operating license runs through 2045, with potential for extension. Decommissioning itself takes roughly a decade once the plant closes. The trust's horizon therefore spans at least 20–30 years, requiring a liability-matching discipline that longer-dated than most institutional pools.

Profile maintained by using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.

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