Step 1 — Relevant industry

ERG S.p.A. is primarily a renewable power generation group operating wind and solar assets across Europe. Based on the provided methodologies, the closest fit is Unregulated Power And Gas, rather than regulated utilities or oil and gas E&P. ERG’s revenues are generated from power production, with some support from tariffs/contracts, but it is not described as a rate-regulated utility.

Step 2 — Estimate Adjusted EBITDA

Reported EBITDA for 2022:

- Profit/loss from operating activities before interest, taxes, depreciation and amortisation expense = €499.430 million

Lease adjustment:

- S&P generally adds back lease-related interest/depreciation to EBITDA and includes lease liabilities in debt.
- The reported EBITDA is already before depreciation/amortisation and appears to include IFRS 16 lease accounting effects.
- No separate lease interest expense is given, so I do not add a further lease EBITDA adjustment to avoid double counting.

Nonrecurring / normalization adjustments:

- ERG reported significant discontinued operations gain/profit, but the provided EBITDA appears to relate to continuing operations.
- No clear nonrecurring EBITDA add-back or deduction can be isolated from the facts.
- Therefore, use reported EBITDA as the best proxy.

Adjusted EBITDA:

- Adjusted_EBITDA = €499.430 million

Step 3 — Estimate FFO

Formula:

- FFO = Adjusted EBITDA − cash interest − cash taxes

Cash interest:

- Interest paid classified as financing activities = €29.146 million
- Early redemption fees = €2.900 million
- Treat early redemption fees as financing cash cost related to debt.
- Cash interest = €29.146 million + €2.900 million = €32.046 million

Cash taxes:

- Income taxes paid classified as operating activities = €91.854 million

FFO:

- FFO = €499.430 million − €32.046 million − €91.854 million
- FFO = €375.530 million

Step 4 — Estimate Adjusted Debt

Use year-end 2022 balance sheet, dated 2023-01-01.

Reported financial debt:

- Other noncurrent financial liabilities = €1,751.255 million
- Other current financial liabilities = €389.716 million

Lease liabilities:

- Noncurrent lease liabilities = €150.955 million
- Current lease liabilities = €6.362 million
- Total lease liabilities = €157.317 million

Derivative / fair value financial liabilities:

- Current financial liabilities at fair value through profit or loss = €76.644 million
- Noncurrent financial liabilities at fair value through profit or loss = €0.000 million

Gross adjusted debt before cash:

- Gross debt = €1,751.255 million + €389.716 million + €157.317 million + €76.644 million
- Gross debt = €2,374.932 million

Eligible cash:

- Cash and cash equivalents = €392.811 million
- S&P may haircut surplus cash depending on jurisdiction and accessibility, but no restricted cash information is provided.
- Use full cash as eligible cash.

Adjusted_Debt:

- Adjusted_Debt = €2,374.932 million − €392.811 million
- Adjusted_Debt = €1,982.121 million

Step 5 — Calculate FFO / Adjusted Debt

- FFO / Adjusted_Debt = €375.530 million / €1,982.121 million
- FFO / Adjusted_Debt = 0.1894577

Rounded to four decimals:

<answer>0.1895</answer>