HIGHOutside partySupplier
single domestic supplier
“10-K Item 1: 'EU&I generally source these services to a single domestic supplier on a plant-by-plant basis using multiyear contracts'”
DUK · Concentration risk · 10-K extracted
Duke Energy Corporation (Holdin (DUK) concentration risks
Updated
The most significant concentration Duke Energy Corporation (Holdin discloses is single domestic supplier, classified HIGH by disclosed size. Below: the full set from the latest 10-K — verbatim quotes, filing references, and a synthesis of what these exposures mean together.
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Source: Duke Energy Corporation (Holdin’s SEC Form 10-K filed — view the filing on SEC EDGAR ↗
At a glance
Disclosed-size breakdown · 4 disclosed concentrations
HIGH1
MEDIUM0
LOW3
Disclosed concentrations
Each card carries a disclosed-size chip (HIGH / MEDIUM / LOW — how large the exposure is as a share of revenue, not how dangerous it is) and a nature tag: Built-in(the company’s own model, geography, or products) or Outside party (an external customer, supplier, or distributor it relies on).
LOWBuilt-inCommodity
33.5%
natural gas and fuel oil generation
“10-K Item 1: 'Natural gas and fuel oil(a)| 33.5 | %'”
LOWBuilt-inCommodity
27.5%
nuclear generation
“10-K Item 1: 'Nuclear(a)| 27.5 | %'”
LOWBuilt-inCommodity
14.5%
coal generation
“10-K Item 1: 'Coal(a)| 14.5 | %'”
TrendMatrix Research · concentration synthesis
What these concentrations mean together
updated 2026-07-03The company's disclosed concentration profile consists of a large-share supplier dependency and several fuel-mix exposures within its generation portfolio. On the supply side, certain infrastructure and utility services are generally sourced to a single domestic supplier on a plant-by-plant basis using multiyear contracts, a large-share dependency by disclosed size. Concentration in a single domestic supplier at the plant level means that any service disruption, contract expiration dispute, or supplier financial stress could affect operational continuity at specific facilities. The generation fuel mix adds context to the structural profile: natural gas and fuel oil, nuclear, and coal each contribute meaningfully to the generation portfolio, all at small-share disclosed sizes individually. Because the individual fuel-type percentages appear in pipe-delimited table format in the filing, they are described qualitatively here. Taken together, the fuel diversification across gas, nuclear, and coal suggests that no single generation technology dominates the fleet to a degree that would make a single fuel disruption catastrophic — each fuel source individually represents a limited share of total generation. On balance, the most consequential concentration in the disclosed profile is the single-domestic-supplier arrangement for plant-level services, as it creates a dependency that is idiosyncratic and plant-specific rather than diffuse. The fuel-mix exposures are structural and relatively distributed. The primary watchpoints are plant-level supplier contract terms and renewal timelines, alongside the regulatory rate-setting framework that governs how fuel costs flow through to customers.
For the engine’s reasoning on DUK’s current verdict — including which dimensions drove the score — see the per-dimension breakdown.
Industry peers · Utilities - Regulated Electric
Peer concentration profile
| Symbol | Name | HIGH | MEDIUM | LOW | Total |
|---|---|---|---|---|---|
| CNP | CenterPoint Energy, Inc (Holdin | 2 | 2 | 0 | 4 |
| D | Dominion Energy, Inc. | 2 | 1 | 0 | 3 |
| AEE | Ameren Corporation | 2 | 0 | 0 | 2 |
| DUK● | Duke Energy Corporation (Holdin | 1 | 0 | 3 | 4 |
| AEP | American Electric Power Company | 0 | 2 | 0 | 2 |
| CMS | CMS Energy Corporation | 0 | 0 | 0 | 0 |
Concentration counts reflect items disclosed in each peer’s most recent 10-K; disclosed-size classification uses TrendMatrix’s internal 10-K extraction taxonomy.