Iberdrola S.A. is a major global utility company operating primarily in regulated electricity networks and renewable energy infrastructure. The provided facts confirm its classification within the "Regulated Utilities" sector, characterized by highly predictable cash flows, stable regulatory frameworks, and low business risk.

Regarding its financial profile, the data indicates an investment-grade position in the BBB area. S&P’s FFO/Net Debt ratio for 2022 stands at 19.65%, which corresponds to a "Significant" financial risk profile (typically 'BBB' territory). S&P's Net Debt/EBITDA is 3.91x. Furthermore, Moody's adjusted leverage trend is "Stable." This suggests the company is fundamentally sound but carries leverage where hybrid issuance could materially improve adjusted metrics, increase rating headroom, or support its significant capital expenditure program (Property, Plant & Equipment grew substantially from €79.9B to €86.3B, with Construction in Progress also rising from €9.1B to €11.5B). 

The company has an established track record with hybrid bonds, having first issued them in 2013 and issuing more in 2021/2022. This demonstrates high credibility in financial policy and institutional market access. The statement of changes in equity explicitly lists "Devengo De Intereses De Obligaciones Perpetuas Subordinadas" (Accrual of interest on subordinated perpetual obligations) and the cash flow statement shows "Emision De Obligaciones Perpetuas Subordinadas" (Issuance of subordinated perpetual obligations), confirming the outstanding hybrid infrastructure. 

Given Iberdrola's regulated utility profile, its BBB-area financial metrics that benefit from equity credit, its massive capex funding rationale, and its proven and recent history of hybrid issuance, it strongly aligns with the criteria for a strongly suitable hybrid bond issuer.

<answer>Strongly Suitable</answer>