REN shows long-term borrowings of 1,695,362,000 EUR as of 2023-01-01 and current borrowings of 638,944,000 EUR. Noncurrent liabilities include significant long-term borrowings and other provisions; there is no explicit mention of hybrid bonds in the provided data. The equity base is 1,517,534,000 EUR, with substantial retained earnings and reserves. Given the absence of hybrid or contingent convertible instruments in the listed liabilities/assets and the sizable interest costs and debt maturities, reliance on hybrid bonds (which would be a mix of debt and equity features) would require explicit issuance or accounting treatment as hybrid debt. Since there is no evidence of hybrid instruments in the data, and the company already carries sizeable traditional debt and equity, increasing reliance on hybrids would be speculative and potentially risky. Therefore, the extent should be low or zero. Final answer: 0%</analysis>