I'll estimate the FFO / Net Debt ratio for ITALGAS S.P.A. for 2022 using S&P methodology.

## Step 1: Calculate FFO (Funds From Operations)

S&P's FFO is typically calculated as:
FFO = Net Income + Depreciation & Amortization + Impairment losses + Other non-cash items - Gains on asset sales + Non-cash interest adjustments

Using the cash flow statement adjustments for the period 2022-01-01 to 2023-01-01 (which represents fiscal year 2022):

**Net Income:** 436,126,000 EUR

**Depreciation & Amortization:** 478,290,000 EUR

**Impairment losses:** 895,000 EUR

**Share-based payments (non-cash):** 7,958,000 EUR

**Equity method adjustment:** -662,000 EUR

**Other equity investment income:** -2,722,000 EUR

**Loss/gain on disposal of non-current assets:** -25,357,000 EUR

**Dividend income adjustment:** 48,000 EUR (add back, then subtract cash dividends received)

**Deferred tax and other non-cash:** Need to approximate

S&P FFO approximation:
FFO ≈ Cash flows from operations + Interest paid + Tax paid - Interest received - Current tax expense

From cash flow data:
- Cash flows from operations: 548,169,000
- This already includes working capital changes, which S&P FFO excludes

Alternatively, FFO = Operating cash flow + Working capital changes (to reverse them):
Cash from operations: 548,169,000
Working capital change was: -336,750,000 (subtracted in the CF statement)

So pre-working capital cash flow = 548,169,000 - (-336,750,000) = 884,919,000

But S&P FFO = Net Income + D&A + Non-cash items (simplified):
FFO ≈ 436,126 + 478,290 + 895 + 7,958 - 662 - 2,722 - 25,357 - 48 = ~894,480,000

Let me use a cleaner S&P approach:
FFO = Cash from operations + net working capital changes = 548,169 + 336,750 = 884,919,000

## Step 2: Calculate Net Debt

**S&P Net Debt** = Short-term debt + Long-term debt + Lease obligations - Cash & equivalents - Liquid investments

Short-term financial liabilities: 142,437,000
Other current financial liabilities: 290,000
Long-term financial liabilities: 6,402,913,000
Other non-current financial liabilities: 34,000

**Total Debt:** 142,437 + 290 + 6,402,913 + 34 = 6,545,674,000

Note: The long-term and short-term debt figures likely already include lease liabilities under IFRS 16.

**Cash & equivalents:** 451,946,000
**Current financial assets:** 5,770,000 + 17,455,000 = 23,225,000

**Net Debt** = 6,545,674 - 451,946 - 23,225 = 6,070,503,000

## Step 3: Calculate FFO / Net Debt

FFO / Net Debt = 884,919 / 6,070,503 ≈ 0.1458 or ~14.6%

Let me refine slightly. S&P typically also adds back cash taxes and interest to get to a pre-tax, pre-interest FFO... but the standard FFO/Debt metric uses FFO after interest and taxes.

FFO ≈ 884,919,000 (using the pre-working capital operating cash flow)
Net Debt ≈ 6,070,503,000

FFO / Net Debt = 884,919 / 6,070,503 ≈ 0.146

<answer>0.146</answer>