To assess suitability for issuing hybrid bonds, I will examine the company’s financial position, particularly its leverage, equity base, profitability, cash flow generation, and existing hybrid capital structure.

**1. Equity and Capital Structure**
- Total equity as of 2023-01-01 is €14.87B, up from €12.77B the year before.
- Equity attributable to owners of the parent is €12.25B.
- Deeply subordinated securities (hybrid bonds) are already in the capital structure: €3.50B as of 2023-01-01, up from €2.46B.
- The company has experience issuing and managing hybrid debt, including a contribution of hybrid debt from Suez SA of €1.62B and a redemption of €500M in the period.

**2. Leverage**
- Noncurrent financial liabilities (excluding concession liabilities): €19.69B (up from €10.46B).
- Current financial liabilities (excluding concession): €6.52B (down from €8.62B).
- Gross debt is substantial, and net debt (considering cash of €9.01B and current financial assets) is also significant. The large increase in noncurrent financial liabilities is a point of caution but largely relates to the acquisition of Suez.

**3. Profitability and Cash Flow**
- Revenue grew from €28.51B to €42.89B (acquisition-driven).
- Operating income before equity-accounted entities increased from €1.21B to €2.21B.
- Profit for the period attributable to owners: €715.8M, up from €404.3M.
- Cash flow from operations (continuing) is strong: €4.10B, up from €3.16B. This indicates robust cash generation capacity to service hybrid coupons.

**4. Hybrid Bond Suitability Factors**
- **Existing use:** The company already has deeply subordinated securities outstanding and has shown the ability to issue and redeem them.
- **Equity cushion:** Strong equity base, and hybrids are treated partly as equity by rating agencies, which helps keep leverage metrics manageable.
- **Interest coverage:** Operating income is more than sufficient to cover finance costs (net finance costs of €632.7M in the period).
- **Rating and market access:** A large multinational utility with investment-grade characteristics generally has good access to hybrid capital markets.
- **Acquisition integration:** The Suez acquisition increased debt and introduced hybrid debt, but the company is actively managing its capital structure (e.g., redemption, new issuance). This may slightly increase risk perception temporarily.

**Conclusion**
The company has the size, cash flow stability, and existing hybrid debt framework that make it a natural candidate for hybrid bond issuance. The elevated leverage post-acquisition is a risk factor, but strong operating cash flows and active liability management suggest overall suitability remains strong.

<answer>Strongly Suitable</answer>