1. **Relevant industry**

ERG S.p.A. is primarily a renewable power generation company operating wind/solar and other energy assets across several European countries. It is not mainly a regulated network utility, nor an oil & gas E&P company. The closest provided methodology is therefore **Unregulated Power and Gas**, especially renewable generation.  
However, because the provided facts do not include detailed PPA/CfD split, merchant exposure, or S&P-specific debt adjustments, I apply the baseline corporate formulas using available reported financials.

---

2. **Estimate 2021 Adjusted EBITDA**

Reported EBITDA is given as:

- 2021 EBITDA = **EUR 396.680 million**

Potential S&P adjustments:
- Lease adjustment: lease liabilities are separately disclosed, but EBITDA already excludes lease depreciation/interest under IFRS 16; adding leases again to EBITDA is not supported by the data.
- Nonrecurring losses/gains: discontinued operations and disposal effects are significant, but no clean EBITDA normalization is provided.
- JV proportional EBITDA: equity-method profit is zero in 2021.
- Pension adjustments: no material pension deficit data beyond small employee benefit provisions.

So:

**2021 Adjusted EBITDA ≈ EUR 396.680 million**

---

3. **Estimate 2021 FFO**

Baseline formula:

\[
FFO = Adjusted\ EBITDA - cash\ interest - cash\ taxes
\]

Available data:
- 2021 Adjusted EBITDA = EUR 396.680 million
- 2021 interest paid = EUR 32.399 million
- 2021 cash taxes paid = EUR 38.010 million

\[
FFO_{2021} = 396.680 - 32.399 - 38.010 = 326.271
\]

**2021 FFO ≈ EUR 326.271 million**

---

4. **Estimate 2021 Adjusted Debt**

Use year-end 2021 balance sheet, dated 2022-01-01.

Reported financial liabilities:
- Other noncurrent financial liabilities = EUR 2,064.088 million
- Noncurrent lease liabilities = EUR 122.663 million
- Current financial liabilities at fair value through profit or loss = EUR 170.857 million
- Other current financial liabilities = EUR 1,342.688 million
- Current lease liabilities = EUR 6.282 million

Gross debt-like financial liabilities:

\[
2,064.088 + 122.663 + 170.857 + 1,342.688 + 6.282 = 3,706.578
\]

Eligible cash:
- Cash and cash equivalents = EUR 860.352 million

\[
Adjusted\ Debt_{2021} = 3,706.578 - 860.352 = 2,846.226
\]

**2021 Adjusted Debt ≈ EUR 2,846.226 million**

---

5. **2021 Adjusted Debt / Adjusted EBITDA**

\[
Debt/EBITDA_{2021} = 2,846.226 / 396.680 = 7.18x
\]

**2021 Adjusted Debt / Adjusted EBITDA ≈ 7.18x**

---

6. **2021 FFO / Adjusted Debt**

\[
FFO/Debt_{2021} = 326.271 / 2,846.226 = 0.115
\]

**2021 FFO / Adjusted Debt ≈ 0.115, or 11.5%**

---

7. **Estimate 2022 Adjusted EBITDA**

Reported EBITDA is given as:

- 2022 EBITDA = **EUR 499.430 million**

As with 2021, no reliable data is provided for detailed S&P normalizations, and equity-method profit is zero.

**2022 Adjusted EBITDA ≈ EUR 499.430 million**

---

8. **Estimate 2022 FFO**

Available data:
- 2022 Adjusted EBITDA = EUR 499.430 million
- 2022 interest paid = EUR 29.146 million
- 2022 cash taxes paid = EUR 91.854 million

\[
FFO_{2022} = 499.430 - 29.146 - 91.854 = 378.430
\]

**2022 FFO ≈ EUR 378.430 million**

---

9. **Estimate 2022 Adjusted Debt**

Use year-end 2022 balance sheet, dated 2023-01-01.

Reported financial liabilities:
- Other noncurrent financial liabilities = EUR 1,751.255 million
- Noncurrent lease liabilities = EUR 150.955 million
- Current financial liabilities at fair value through profit or loss = EUR 76.644 million
- Other current financial liabilities = EUR 389.716 million
- Current lease liabilities = EUR 6.362 million

Gross debt-like financial liabilities:

\[
1,751.255 + 150.955 + 76.644 + 389.716 + 6.362 = 2,374.932
\]

Eligible cash:
- Cash and cash equivalents = EUR 392.811 million

\[
Adjusted\ Debt_{2022} = 2,374.932 - 392.811 = 1,982.121
\]

**2022 Adjusted Debt ≈ EUR 1,982.121 million**

---

10. **2022 Adjusted Debt / Adjusted EBITDA**

\[
Debt/EBITDA_{2022} = 1,982.121 / 499.430 = 3.97x
\]

**2022 Adjusted Debt / Adjusted EBITDA ≈ 3.97x**

---

11. **2022 FFO / Adjusted Debt**

\[
FFO/Debt_{2022} = 378.430 / 1,982.121 = 0.191
\]

**2022 FFO / Adjusted Debt ≈ 0.191, or 19.1%**

---

12. **Credit trend classification**

### Signal 1: Leverage

\[
Change = 3.97x - 7.18x = -3.21x
\]

Threshold:
- ≤ -0.2x = Improving

The leverage improvement is very large.

**Signal 1 = Improving**

### Signal 2: Cash-flow coverage

\[
Change = 0.191 - 0.115 = +0.076
\]

This is a +7.6 percentage point improvement.

Threshold:
- ≥ +0.03 = Improving

**Signal 2 = Improving**

Both signals agree. ERG’s credit metrics improved materially from 2021 to 2022, driven by higher EBITDA and FFO, as well as a large reduction in adjusted net debt following major disposals and debt repayment.

<answer>Improving</answer>