TenneT Holding B.V. appears **Strongly Suitable** for hybrid bond issuance.

Key reasons:

- **Regulated utility / essential infrastructure profile:** TenneT is a transmission system operator, providing critical electricity infrastructure. This is one of the clearest business models for hybrid capital suitability because cash flows are ultimately supported by regulated tariff frameworks and strategic national importance.

- **State ownership and strategic importance:** The parent is the **Dutch State**, which supports credibility with debt and hybrid investors. Even though reported earnings were weak in 2022, TenneT’s role in electricity transmission and grid expansion gives it strong access to institutional capital markets.

- **Existing and established hybrid issuer:** TenneT already had **€2.125 billion of hybrid capital outstanding** at year-end 2022 and first issued hybrids in **2010**. It also issued hybrid bonds in **2021 or 2022**, which is a very strong indicator that the company is a recurring and credible hybrid issuer.

- **Clear funding rationale from heavy capex:** The company is undertaking a very large grid investment program. Purchases of PP&E and intangible assets were **€4.424 billion in 2022**, up from **€3.711 billion in 2021**. This creates a strong rationale for equity-like capital to fund growth while managing rating metrics.

- **Financial metrics are under pressure:** S&P net debt / EBITDA for 2022 is extremely high at **83.85x**, and S&P FFO / net debt is **negative at -0.01**. Moody’s adjusted leverage trend is also described as **deteriorating**. These are exactly the circumstances where hybrid issuance can help preserve rating headroom by receiving partial equity credit.

- **Reported profitability and cash flow pressures support hybrid rationale:** TenneT reported a **€879 million net loss** in 2022 and operating loss of **€976 million**, while debt increased sharply. Long-term borrowings rose from **€12.366 billion to €19.006 billion**. Hybrid issuance can reduce reliance on pure senior debt and support capitalization.

- **Market access likely despite higher rates:** 2022 rates and credit spreads were materially higher than in 2020-2021, making hybrid coupons more expensive. However, TenneT’s regulated infrastructure status, state ownership, established hybrid track record, and strategic capex needs likely preserve strong investor appetite.

The main caveat is that financial metrics are very weak in 2022, and hybrid issuance alone would not fully solve the leverage issue. However, because TenneT is a large, regulated, state-owned transmission operator with a proven hybrid track record and a clear rating/capital-structure rationale, the suitability remains strong.

<answer>Strongly Suitable</answer>