To estimate the FFO (Funds From Operations) to Net Debt ratio for EDP, S.A. for 2022 (reporting period 2022-01-01 to 2023-01-01), we apply the standard S&P Global Ratings methodology.

**1. Estimating FFO:**
FFO is generally calculated as Cash Flow from Operations minus changes in working capital and certain non-cash items, but for simplicity based on provided data, it is derived from EBITDA (or a close approximation like "Profit Loss Before Provisions Amortisation And Impairment...") adjusted for net interest and taxes. 
*   **Operating Profit (EBITDA approximation):** 4,523,539,000 EUR
*   **Net Interest:** Finance Costs (1,753,220,000) - Finance Income (843,000,000) = 910,220,000 EUR
*   **Income Tax & CESE:** 450,024,000 EUR
*   **FFO calculation:** EBITDA - Net Interest - Taxes/CESE
*   FFO = 4,523,539,000 - 910,220,000 - 450,024,000 = **3,163,295,000 EUR**

**2. Estimating Net Debt (as of end of 2022, reported as 2023-01-01):**
Net Debt = (Longterm Borrowings + Current Borrowings) - Cash and Cash Equivalents
*   Longterm Borrowings: 15,782,604,000
*   Current Borrowings: 4,239,869,000
*   Cash and Cash Equivalents: 4,900,205,000
*   Net Debt = (15,782,604,000 + 4,239,869,000) - 4,900,205,000
*   Net Debt = 20,022,473,000 - 4,900,205,000 = **15,122,268,000 EUR**

**3. FFO / Net Debt Ratio:**
Ratio = 3,163,295,000 / 15,122,268,000 ≈ 0.20918

Converting to percentage: ~20.92%

<answer>0.20918</answer>