I'll work through this step-by-step for ACEA S.P.A.

## Step 1: Identify the Relevant Industry

ACEA S.P.A. is an Italian multi-utility company based in Rome, operating in water, electricity distribution, and environmental services. It fits the **Regulated Utilities** industry methodology, though it also has some unregulated activities. The company operates primarily in regulated utility sectors.

## Step 2: Estimate Adjusted Debt

**Reported Debt:**
- Non-current financial liabilities: €4,722,263,000
- Current financial liabilities: €619,418,000
- Total reported financial debt = €4,722,263,000 + €619,418,000 = **€5,341,681,000**

**Leases (Right-of-use assets as proxy for lease liabilities):**
Right-of-use assets at end 2022 = €90,397,000. The lease liabilities would be embedded in the financial liabilities already reported. S&P typically treats operating leases as debt. Since IFRS 16 is applied, lease liabilities are already included in the reported financial liabilities. No additional adjustment needed.

**Pension Deficit:**
- Non-current provisions for employee benefits: €112,989,000
- This represents the pension/post-employment benefit obligation. S&P adds pension deficits to debt.
- Pension deficit adjustment = **€112,989,000**

**Cash Deduction:**
- Cash and equivalents: €559,908,000
- S&P typically allows deduction of surplus cash. For utilities, S&P is conservative about cash deductions. I'll assume a modest portion is operational. A common approach is to deduct excess cash, but for utilities S&P often deducts limited amounts. I'll conservatively not deduct cash (or deduct a small portion). However, S&P typically allows some netting. Let's assume no cash deduction for a regulated utility (conservative approach), or a partial deduction. Given the large cash balance, I'll assume S&P might deduct a portion - but for regulated utilities, they're typically conservative. I'll deduct no cash to be conservative with the ratio.

**Adjusted Debt:**
= 5,341,681,000 + 112,989,000
= **€5,454,670,000**

## Step 3: Estimate Adjusted EBITDA

**Reported EBITDA (Gross Profit in the report appears to be labeled as "Margine Operativo Lordo" = EBITDA):**
- "Gross Profit" 2022 = €1,305,021,000 — This is labeled as MOL (Margine Operativo Lordo), which is the Italian term for EBITDA.

Let me verify: Revenue (€5,138,245,000) - Operating Expenses (€3,861,121,000) + Income from associates (€27,897,000) = €1,305,021,000. This matches "Gross Profit" which is indeed EBITDA.

**Lease adjustment:** Under IFRS 16, depreciation of RoU assets is in D&A and interest on lease liabilities is in finance costs. S&P adds back the lease depreciation (already in EBITDA since it's above the D&A line) and adds the full lease payment. Since IFRS 16 already capitalizes leases, and EBITDA already excludes lease depreciation, the S&P adjustment would be to add back the imputed interest on leases to EBITDA. The lease-related interest is likely small given RoU assets of ~€90M. I'll estimate lease interest at roughly €3-4M but this is already minor.

**Pension adjustments:** S&P adjusts for pension service costs vs. total pension expense. The adjustment is typically small. I'll use the reported EBITDA figure as approximately correct.

**Adjusted EBITDA ≈ €1,305,021,000**

Adding a small lease interest adjustment (~€3,000,000):
**Adjusted EBITDA ≈ €1,308,000,000**

## Step 4: Calculate Adjusted Debt / Adjusted EBITDA

Adjusted Debt / Adjusted EBITDA = €5,454,670,000 / €1,308,000,000 ≈ 4.17

Let me refine: Using the more precise EBITDA of €1,305,021,000:

5,454,670,000 / 1,305,021,000 ≈ 4.18

Given the approximations, the ratio is approximately **4.17**.

<answer>4.17</answer>