Let’s work through the reasoning step by step.

**1. Entity and sector classification**  
- A2A Energia S.p.A. is part of the A2A S.p.A. group, an Italian multi-utility.  
- The sector description points to **Regulated Utilities** and **Unregulated Power and Gas** segments.  
- The parent is ultimately controlled by the municipalities of Milan and Brescia, and the entity is in Italy.

**2. Current hybrid bond situation**  
- The facts say: “Issued hybrid bonds in 2021 or 2022: yes” but also “First year of hybrid bond issuance: 2024”.  
- This is contradictory, but the key statement for forward-looking guidance is that no hybrids are currently outstanding (first issuance planned for 2024).  
- The “previous levels of hybrid bond issuance is a *strong* indicator” rule means that if an entity has not issued hybrids before, there is likely a reason, and 0% is the baseline.

**3. Financial health and credit metrics**  
- S&P Net Debt / EBITDA 2022: 3.47x  
- S&P FFO / Net Debt 2022: 0.2317 (≈23.2%)  
- Moody’s adjusted leverage trend: Improving  
- EBITDA grew modestly from €1,428m to €1,505m.  
- Operating cash flow strong: €1,260m in 2022, free cash flow positive €118m (vs –€460m in 2021).  
- Profit before tax €756m, net income attributable to owners €401m.  
- No material liquidity stresses; cash position increased to €2,584m.  

**4. Rating and leverage headroom**  
- The metrics don’t suggest immediate downgrade risk; FFO/Net Debt is solid for investment grade.  
- Leverage is moderate for a European utility, and the trend is improving.  
- No transformational M&A or very high capex is indicated—capex is sizeable (€856m + €384m), but manageable given cash flow.  

**5. Cost of hybrid vs. current debt**  
- Market data shows a sharp rise in rates from 2021 to 2022; subordinated IG spreads widened.  
- Cost of hybrid would be materially above existing senior debt cost, which would increase overall cost of capital.  

**6. Guidelines mapping**  
- 0%: “No current hybrid in the capital structure” and “cost of hybrid will materially increase the current cost of debt” both match the profile.  
- The entity has not issued hybrids before; doing so now would be a shift without clear distress or major leverage benefit.  
- Moderate leverage and stable metrics do not support a strong need for hybrid capital.  

Given no precedent, no severe rating pressure, improving leverage, and higher hybrid costs, the advisable range is at the lowest end.

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