Let’s go step-by-step.

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**Step 1 – Identify the industry**

ERG S.P.A. is an Italian company principally operating in renewable energy generation (wind, solar). It is not a regulated utility, not an oil & gas E&P, and not a transportation infrastructure company. It fits best under **Unregulated Power and Gas**.

For this sector, the standard volatility table and formulas apply unless specifically adjusted. Since ERG’s cash flows come from renewables with some contracted revenues (PPAs, feed-in tariffs), but we need to check for “strongly protected” revenue. The task here is simply to compute the ratio based on given numbers.

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**Step 2 – Adjusted EBITDA**

We start from reported EBITDA:
- 2022 EBITDA (reported): **€499,430,000**

Check adjustments:

1. **Leases** – S&P adds back lease depreciation/interest if operating leases were capitalized. From the facts:  
   - Right-of-use assets at end of 2022: €154,311,000  
   - Noncurrent lease liabilities: €150,955,000  
   - Current lease liabilities: €6,362,000  
   - Lease payments: €8,337,000  
   Under IFRS 16, EBITDA already excludes lease depreciation and interest, so no further adjustment needed—lease expense is already removed.

2. **Nonrecurring items**:  
   - Impairment loss on trade receivables: €300,000 (already in EBITDA as expense) – small, recurring-like.  
   - Impairment loss/reversal on intangible assets and PPE: €43,185,000 (this is a reversal of impairment, i.e., a gain). S&P would remove nonrecurring gains from EBITDA.  
   So **Adjusted EBITDA = 499,430,000 - 43,185,000 = €456,245,000**.

3. **Other adjustments**:  
   - Share of profit from associates/JVs: none.  
   - Pension adjustments: not material based on given data.  

**Adjusted EBITDA = €456,245,000**.

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**Step 3 – FFO**

Formula:  
FFO = Adjusted EBITDA - cash interest - cash taxes

**Cash interest**:  
- Finance costs (P&L): €112,195,000  
- Finance income: €75,622,000  
Net finance cost: €36,573,000.  
But from cash flow statement:  
- Interest paid (classified as financing): €29,146,000  
We need actual cash interest paid. Use **€29,146,000**.

**Cash taxes**:  
- Income taxes paid (operating): €91,854,000

So:  
FFO = 456,245,000 - 29,146,000 - 91,854,000  
FFO = **€335,245,000**

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**Step 4 – Adjusted Debt**

From balance sheet at end of 2022:

**Reported debt**:  
- Noncurrent financial liabilities (bonds, loans): €1,751,255,000 (Other noncurrent financial liabilities)  
- Current financial liabilities: €389,716,000 (Other current financial liabilities)  
- Current financial liabilities at FV: €76,644,000  
- Noncurrent financial liabilities at FV: €0  
Sum = 1,751,255,000 + 389,716,000 + 76,644,000 = **€2,217,615,000**

**Leases**:  
- Noncurrent lease liabilities: €150,955,000  
- Current lease liabilities: €6,362,000  
Total leases = €157,317,000

**Pension deficit**:  
- Noncurrent provisions for employee benefits: €3,723,000  
(This is likely underfunded – add it to debt.)

**Other debt-like items**:  
- Decommissioning provision: €92,613,000 (asset retirement obligation – debt-like).  
- Other long-term provisions: €24,401,000 (less clearly debt-like; but could be included if significant. Here: add for prudence).  

**Guarantees/hybrids**: none indicated.

**Eligible cash**:  
- Cash and equivalents: €392,811,000  
S&P typically deducts surplus cash; for simplicity, deduct all cash.

Adjusted Debt = (2,217,615,000 + 157,317,000 + 3,723,000 + 92,613,000 + 24,401,000) - 392,811,000  
= 2,495,669,000 - 392,811,000 = **€2,102,858,000**

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**Step 5 – FFO / Adjusted Debt**

= 335,245,000 / 2,102,858,000  
≈ **0.1594**

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<answer>0.1594</answer>