To estimate the FFO (Funds From Operations) / Net Debt ratio for VERBUND AG for the year 2022 (reporting period ending 2022-12-31, effectively the 2022 calendar year), we perform the following calculations based on the provided data:

**1. Estimating FFO (Funds From Operations):**
FFO is typically calculated as Cash Flow from Operating Activities adjusted for non-cash items, though it is often approximated by EBITDA minus Interest Paid and Income Taxes Paid.
*   EBITDA (2022): 3,160,679,000 EUR
*   Interest Paid (Operating Activities, 2022): 36,100,000 EUR
*   Income Taxes Paid (Operating Activities, 2022): 343,100,000 EUR
*   FFO = 3,160,679,000 - 36,100,000 - 343,100,000 = 2,781,479,000 EUR

**2. Estimating Net Debt (as of 2022-12-31 / 2023-01-01):**
Net Debt = (Current Financial Liabilities + Noncurrent Financial Liabilities) - Cash and Cash Equivalents
*   Current Financial Liabilities (2022-12-31): 1,109,297,000 EUR
*   Noncurrent Financial Liabilities (2022-12-31): 2,844,559,000 EUR
*   Cash and Cash Equivalents (2022-12-31): 409,252,000 EUR
*   Net Debt = (1,109,297,000 + 2,844,559,000) - 409,252,000
*   Net Debt = 3,953,856,000 - 409,252,000 = 3,544,604,000 EUR

**3. FFO / Net Debt Ratio:**
*   Ratio = 2,781,479,000 / 3,544,604,000
*   Ratio ≈ 0.7847

(Note: Using the reported "Cash Flows From Used In Operating Activities" of 2,019,859,000 EUR would result in a lower ratio of approximately 0.57. Standard practice for FFO in utilities often leans toward the EBITDA-based calculation provided above.)

<answer>0.7847</answer>