To determine the appropriate extent to which Ørsted A/S should rely on hybrid bonds in its capital structure, we must analyze the company's financial position, the cost of hybrid capital relative to other financing sources, and the prevailing market conditions provided.

**1. Analysis of Current Capital Structure and Hybrid Usage:**
*   **Equity Composition (2022):**
    *   Total Equity: 85,137 million DKK.
    *   Hybrid Capital: 17,984 million DKK.
    *   Equity Attributable to Owners: 64,072 million DKK.
    *   Hybrid Capital as a % of Total Equity: $17,984 / 85,137 \approx 21.1\%$.
    *   Hybrid Capital as a % of Total Capital (Equity + Liabilities): $17,984 / (85,137 + 184,756) \approx 6.3\%$.
*   **Cost of Hybrid Capital:**
    *   Coupon Payments on Hybrid Capital (2022): 529 million DKK.
    *   Average Hybrid Capital Balance (approx): $(17,984 + 13,232) / 2 = 15,608$ million DKK.
    *   Implied Coupon Rate: $529 / 15,608 \approx 3.39\%$.
    *   Note: The "Profit Loss Attributable To Hybrid Capital Owners" is 577 million DKK, which includes tax effects or other adjustments, but the cash coupon is the primary cost driver for financing decisions. The tax shield on hybrids is often limited or non-existent depending on jurisdiction and classification, though the data shows a small tax adjustment (-13 million DKK).

**2. Market Conditions and Cost of Debt:**
*   **Interest Rate Environment:** The swap curves indicate a significant rise in interest rates in 2022 compared to 2020-2021.
    *   5Y Swap Average 2022: 1.726%.
    *   10Y Swap Average 2022: 1.927%.
*   **Corporate Bond Spreads:**
    *   iShares Core Euro Corp Bond Average Yield 2022: 1.085%.
    *   Sub-senior Delta for iBoxx EUR Non-Financial IG: 2.295%.
*   **Estimated Cost of Senior Debt:**
    *   Risk-free rate (10Y Swap) + Credit Spread. Ørsted is a large utility/energy company, likely investment grade.
    *   Estimated Senior Debt Cost $\approx 1.93\% (\text{Swap}) + \text{Credit Spread}$. Even with a conservative spread of 1-1.5%, the cost of senior debt would be roughly 3.0% - 3.5%.
    *   However, hybrid bonds are subordinated and carry higher risk, thus demanding a higher yield than senior debt. The implied cost of hybrids (~3.4%) is competitive but likely higher than the marginal cost of new senior debt if the company maintains a strong credit rating.

**3. Strategic Considerations for Hybrid Capital:**
*   **Credit Rating Protection:** Hybrids are often used to strengthen the equity base without diluting existing shareholders, thereby protecting credit ratings. Ørsted has significant debt (Liabilities: 184,756 million DKK). The Debt-to-Equity ratio is high ($\approx 2.17$). Hybrids help lower this ratio from a rating agency perspective (often treated as 50% equity/50% debt).
*   **Financial Flexibility:** Hybrid coupons can often be deferred without triggering default, providing flexibility during cash flow stress. Given the volatility in energy markets and the large "Gains/Losses on Cash Flow Hedges" (-23,521 million DKK before tax), this flexibility is valuable.
*   **Optimal Level:**
    *   **0%:** Too conservative. The company already uses hybrids effectively to manage its leverage ratios. Eliminating them would require issuing more expensive equity or taking on more senior debt, potentially hurting credit ratings.
    *   **100%:** Impossible and impractical. A company cannot be funded entirely by hybrids; it needs senior debt for tax shields and lower costs, and common equity for residual claim and governance.
    *   **75%:** Too high. Hybrids are expensive compared to senior debt. Relying on them for 75% of the capital structure would drastically increase the weighted average cost of capital (WACC).
    *   **50%:** Still very high. While hybrids count partially as equity, replacing half of the entire capital structure (debt + equity) with hybrids is not standard for investment-grade utilities. It would imply a very thin layer of senior debt and common equity, increasing risk premiums.
    *   **25%:** This option aligns best with the current usage and best practices. Currently, hybrids represent ~21% of total equity. In terms of *total capitalization* (Debt + Equity), they are ~6%. However, the question asks about the extent the *capital structure* should rely on them. Usually, "reliance on hybrid bonds" refers to their proportion within the *equity-like* or *permanent capital* bucket, or as a strategic buffer.
    *   Let's re-evaluate the options in the context of "Capital Structure". If we look at the mix of *long-term financing* (Equity + Long-term Debt), Hybrids are a small but strategic part.
    *   Standard corporate finance theory suggests hybrids should be a *minority* component of the total capital stack, used specifically to optimize the debt/equity mix for rating agencies. A common target for hybrids is 10-20% of total capitalization or up to 30-40% of the equity base.
    *   Looking at the options: 0% is too low (ignores benefits). 100%, 75%, 50% are excessively high for a single instrument class that is more expensive than senior debt. 25% is a reasonable strategic target for the proportion of *equity* or *permanent capital* that might be hybrid, or a modest portion of total capital. Given the current hybrid/equity ratio is ~21%, moving to or maintaining a level around 25% of the equity/permanent capital base is sound. If the question implies % of *Total Capital*, 25% is high but perhaps the "least wrong" among the high options if 0% is rejected. However, 0% is rarely optimal for large leveraged firms.
    *   Let's look at the cost benefit. The cost of hybrids (~3.4%) is likely higher than senior debt. Therefore, you minimize hybrids subject to rating constraints. You don't maximize them. Thus, the lowest non-zero option is often preferred if the rating is secure. But 0% removes the flexibility benefit.
    *   Comparing 25% vs 0%: The company *already* has ~21% of its equity as hybrids. Reducing to 0% would be a major structural shift. Maintaining or slightly increasing to 25% (of equity/permanent capital) is a stable strategy. If the options refer to % of *Total Capital*, 25% is very high (current is 6%). If the options refer to % of *Equity*, 25% is very close to the current 21%. Given the ambiguity, "25%" is the most plausible strategic target for the *hybrid portion of the equity base* or a moderate reliance level, whereas 50/75/100 are clearly excessive. 0% ignores the strategic value already realized.

    Therefore, 25% is the most balanced answer, reflecting a strategic but limited reliance on this expensive but flexible instrument.

<answer>25%</answer>