Let’s step through the key pieces of the EDF 2022 annual report and the market context, then map them to the guidance.

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**1. Operating and financial performance deterioration**

- Revenue rose significantly (€143.5 bn vs €84.5 bn), but Fuel/Energy costs more than doubled (€121 bn vs €44.3 bn).  
- Operating profit before D&A fell from €18.0 bn to **-€5.0 bn**.  
- Operating loss was **-€19.4 bn** vs +€5.2 bn profit.  
- Net loss attributable to owners was **-€17.9 bn** (EPS -€5.03).  
- Comprehensive loss to parent: **-€17.4 bn**.  
- Equity attributable to parent fell from €50.2 bn to **€34.3 bn**.  
- Deferred tax assets surged to €8.7 bn from €1.7 bn (reflecting large loss carryforwards).

This is a severe credit deterioration.

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**2. Cash flow pressure**

- Operating cash flow before interest and tax: **-€5.1 bn** (previously +€15.5 bn).  
- Net operating cash flow: **-€7.4 bn** (vs +€12.6 bn).  
- Large negative working capital impact (€-8.3 bn).  
- CapEx remained high at €18.3 bn.  
- Free cash flow heavily negative; net debt increased; external financing surged with €34.2 bn in new borrowings.

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**3. Regulatory and business risk profile**

- EDF operates in a highly political, state-influenced environment (French government majority owner).  
- The 2022 French regulatory measures (e.g., ARENH volume increase, price caps) showed that tariff-setting can be overridden politically, sharply reducing revenue recovery.  
- This aligns with “adequate/weak” regulatory advantage characteristics—significant political intervention, inability to fully recover costs in a timely way, and weakened financial stability.  
- The generation mix is strong in scale and diversity (nuclear, hydro, renewables), but merchant exposure and forced below-market sales weaken this.  
- Under S&P’s methodology, this points to a business risk profile in the lower adequate range, with volatility more consistent with **medial** or even **standard** benchmarks given the high cash flow volatility.

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**4. Capital structure and hybrid context**

- EDF already has a history of hybrid issuance (perpetual subordinated bonds).  
- In 2022: €994 m issued; €606 m coupon payments; net redemption of hybrids.  
- The equity base has shrunk significantly, so the current hybrid percentage of adjusted capital may already be non-trivial.  
- The maximum advised hybrid cap is **15% of total adjusted capital**.  
- Issuance limit of ~€3 bn per year.

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**5. Rationale for additional hybrids**

- EDF faces **very high refinancing and capex needs** in coming years (nuclear fleet maintenance, new build, renewables, working capital swings).  
- Material downgrade risk exists without capital structure support—the drastic fall in equity and operating losses threaten investment-grade metrics.  
- The cost of subordinated/hybrid debt vs senior: In 2022, sub-sen spread for IG non-financials was ~1% above senior; with EDF’s situation, the all-in cost of hybrids would likely be closer to current senior spreads or even slightly higher, but not drastically punitive.  
- Hybrid issuance meaningfully supports FFO/debt and other adjusted leverage metrics, helping stabilize the rating outlook.  
- Given the scale of stress, a modest hybrid level (e.g., 3.75–7.5%) might not be sufficient to preserve rating and absorption capacity. However, a full 15% may be excessive unless a multi-year transformation/M&A program is underway.  
- EDF’s need is significant, but not a one-off “transformational M&A” scenario; the main stress is operational and regulatory, not acquisition-driven. Hence the 11.25% band aligns well with “high capex intensity, significant leverage pressure, investment-grade preservation strongly dependent on capital structure optimization.”  

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**6. Conclusion**

The combination of severe cash flow deficits, large capex, political/regulatory risk, and a weakened equity base makes a strong case for meaningful hybrid use—above moderate levels but not at the absolute maximum. The **11.25%** level best matches the guidance for high capex intensity, significant leverage pressure, and dependence on hybrid support for rating stability.

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<answer>11.25%</answer>