Step 1 — Relevant industry

ELECTRICITE DE FRANCE is an integrated electricity utility with regulated networks, generation, supply, and large public-service obligations. Among the methodologies provided, the closest fit is Regulated Utilities, though EDF also has meaningful unregulated generation/supply exposure. For this estimate, I apply the regulated utility framework and use FFO-to-debt as the core credit metric.

Step 2 — Estimate Adjusted EBITDA

The annual report provides:

- Operating Profit Before Depreciation And Amortisation, i.e. reported EBITDA / EBITDA-like EBE:  
  -€4.986 billion

Under the simplified S&P-style formula:

Adjusted_EBITDA = reported EBITDA + adjustments

Available facts do not provide enough detail to quantify lease additions, purchased power obligations, proportional JV EBITDA, or specific nonrecurring normalizations. Therefore, I use reported EBITDA as the base estimate.

Adjusted_EBITDA ≈ -4.986 billion

Step 3 — Estimate FFO

The cash flow statement provides a more direct approximation of FFO before working capital:

- Net cash flow from operations before net financial expenses disbursed and income taxes paid/refund: -€5.140 billion
- Net financial expenses disbursed including dividends received: €1.003 billion
- Income taxes paid/refund: €1.282 billion

This reconciles to operating cash flow:

FFO proxy = EBITDA-like operating cash flow before working capital - cash financial expenses - cash taxes

FFO = -5.140 - 1.003 - 1.282  
FFO = -7.425 billion

This equals reported cash flows from operating activities because working capital movement is already embedded in the final CFO line, but for an FFO estimate the more relevant annual-report bridge still points to materially negative cash generation. Given the provided data, I use:

FFO ≈ -€7.425 billion

Step 4 — Estimate Adjusted Debt

Balance sheet financial liabilities at 2022 year-end:

- Other noncurrent financial liabilities: €71.058 billion
- Other current financial liabilities: €71.844 billion

Reported financial debt proxy:

Reported debt = 71.058 + 71.844  
Reported debt = €142.902 billion

S&P adjusted debt also includes debt-like obligations. From the data provided, the most material quantifiable debt-like adjustment is the pension deficit / employee benefit obligation:

- Noncurrent provisions for employee benefits: €16.231 billion

Hybrid debt treatment:

- The facts show perpetual subordinated bonds / hybrid instruments, but the outstanding balance is not explicitly provided.
- The annual cash-flow issuance/redemption data alone is insufficient to determine the year-end hybrid stock.
- Therefore, I do not add a separate hybrid debt portion beyond reported financial liabilities to avoid double-counting.

Eligible cash:

- Cash and cash equivalents: €10.948 billion

Adjusted_Debt = reported financial liabilities + pension deficit - cash

Adjusted_Debt = 142.902 + 16.231 - 10.948  
Adjusted_Debt = €148.185 billion

Step 5 — Calculate FFO / Adjusted Debt

FFO / Adjusted_Debt = -7.425 / 148.185  
FFO / Adjusted_Debt = -0.0501056

Rounded to four decimals:

<answer>-0.0501</answer>