EDF has significant equity and large noncurrent liabilities with substantial deficits in equity and negative comprehensive income indicating high leverage. The data show EDF has issued capital, reserves, and substantial borrowings, including perpetual subordinated bonds and convertible instruments earlier. Given EDF’s large negative profit from continuing operations and large negative comprehensive income, it would benefit from equity-like hybrid instruments to optimize cost of capital while preserving financial flexibility. However, EDF already engages in complex financing with substantial noncurrent liabilities; relying heavily on hybrids could increase solvency risk if market conditions worsen. A moderate use of hybrids would balance capital structure without excessive leverage risk. Therefore, a mid-range, around 50%, seems reasonable. Final answer: 50% </analysis>