**Step 1: Identify the relevant industry**
Acciona SA is a major Spanish conglomerate known for its renewable energy generation, utilities, and infrastructure construction. Based on the provided methodologies, its primary business aligns with **Unregulated Power And Gas** (as a renewable generation company) and **Regulated Utilities** (as a utility operator). However, since it has significant unregulated power generation (renewables) and does not benefit solely from protective rate regulation, the **Unregulated Power And Gas** methodology is the most applicable hybrid framework for its energy division, while still applying general corporate adjustments for its broad infrastructure footprint. We will proceed using the baseline ratios and standard adjustments.

**Step 2: Estimate Adjusted EBITDA**
Using the baseline formula:
Adjusted_EBITDA = EBITDA + adjustment_leases + nonrecurring_losses - nonrecurring_gains ± pension_adjustments ± joint_venture_proportional_EBITDA ± other_normalization_adjustments

- Reported EBITDA: 
  Profit Loss From Operating Activities (1,334,000,000 EUR) + Dotacion Amortizacion YVariacion De Provisiones (762,000,000 EUR) = 2,096,000,000 EUR.
- Adjustment for leases: S&P adds back an estimate of lease interest and depreciation to EBITDA. The standard adjustment is often approximated using the lease liabilities. Total Lease Liabilities = Noncurrent (430,000,000 EUR) + Current (68,000,000 EUR) = 498,000,000 EUR. Assuming a standard 5x rent adjustment (roughly half for interest, half for depreciation), the EBITDA add-back is ~ 498,000,000 EUR * 5 * 0.5 ≈ 1,245,000,000 EUR. (Note: without specific rent expense given, we will use a simplified approximation, or alternatively just adjust debt for the full lease obligation as S&P often does without a massive EBITDA add-back unless rent is specified. Since S&P standard methodology capitalizes operating leases at an 8x multiplier, Adjusted Rent = 8 * Rent. If rent isn't provided, we assume the liability represents the principal, and interest/depreciation roughly match the liability * 0.05. Let's use the standard 8x multiple on the estimated rent if available, but since it's not, a 6x multiple on the lease liability to get rent, and 8x to get debt, is too aggressive without rent. We will assume a modest add-back for interest/depreciation based on the lease liability ~ 49,800,000 EUR each). For simplicity, let's assume a standard capitalization where the lease liability is the debt equivalent, and the EBITDA add-back for interest and depreciation is roughly equal to the lease liability times the discount rate (~5%), yielding ~ 25,000,000 EUR.
- Nonrecurring items: Impairment Loss Reversal (-15,000,000 EUR, meaning a gain of 15M, so we subtract it) + Other Gains Losses (13,000,000 EUR, subtracting gain). Total = -28,000,000 EUR.
- Equity Method Earnings: Resultado De Puesta En Equivalencia Operativa (159,000,000 EUR). Under S&P, proportional EBITDA for JVs can be added, but standard adjusted EBITDA usually keeps equity income below EBITDA unless proportionately consolidated. We will leave it out of EBITDA.
- Pension adjustments: None identified.
Adjusted_EBITDA = 2,096,000,000 + 25,000,000 (lease add-back) - 28,000,000 = 2,093,000,000 EUR.

**Step 3: Estimate FFO**
Using the baseline formula:
FFO = Adjusted_EBITDA - cash_interest - cash_taxes

- Cash interest: Interest Paid Classified As Operating Activities (209,000,000 EUR) + Payments Of Lease Liabilities Classified As Financing Activities (120,000,000 EUR) = 329,000,000 EUR.
- Cash taxes: Income Taxes Paid Refund Classified As Operating Activities (215,000,000 EUR).
FFO = 2,093,000,000 - 329,000,000 - 215,000,000 = 1,549,000,000 EUR.

**Step 4: Estimate Adjusted Debt**
Using the baseline formula:
Adjusted_Debt = (reported_debt + leases + pension_deficit + guarantees + hybrid_debt_portion + other_debt_like_items) - eligible_cash

- Reported Debt (Loans & Bonds): Noncurrent Portion Of Noncurrent Loans Received (2,073,000,000) + Current Loans Received (280,000,000) + Participaciones Preferentes No Corrientes (2,364,000,000) + Participaciones Preferentes Corrientes (1,666,000,000) = 6,383,000,000 EUR.
- Leases: Noncurrent Lease Liabilities (430,000,000) + Current Lease Liabilities (68,000,000) = 498,000,000 EUR.
- Pension deficit / Guarantees / Hybrids / Other: None explicitly separated or typical hybrid structures requiring equity treatment identified; the "Participaciones Preferentes" (Preferred shares/obligations) function as debt-like instruments in S&P methodology unless strictly subordinated. 
- Eligible Cash: Cash And Cash Equivalents (2,318,000,000 EUR). S&P typically allows deduction of cash, particularly if it is not restricted. 
Adjusted_Debt = (6,383,000,000 + 498,000,000) - 2,318,000,000 = 4,563,000,000 EUR.

**Step 5: Calculate FFO / Adjusted_Debt**
FFO / Adjusted_Debt = 1,549,000,000 / 4,563,000,000 = 0.3394708...

Rounding to four decimal places:
<answer>0.3395</answer>