REVENUE SUPPORT FOR OFFSHORE WIND GENERATION

1. Meaning and Regulatory Purpose

Revenue support for offshore wind generation refers to legal mechanisms that reduce exposure to volatile wholesale electricity prices and provide developers with sufficiently predictable income to finance capital-intensive offshore projects. Offshore wind farms involve substantial development, seabed, turbine, cable, construction, financing and grid-connection costs. Without predictable revenues, these projects can face a higher cost of capital and greater investment risk.

In Great Britain, the principal support mechanism is the Contract for Difference (CfD) regime established under the Electricity Market Reform framework. A CfD broadly stabilises generator revenue by comparing an agreed strike price with a market reference price. When the reference price is below the strike price, the generator generally receives the difference; when it exceeds the strike price, the generator pays back the difference. For Allocation Round 7, fixed-bottom and floating offshore wind projects were awarded 20-year CfDs, extending the period of revenue certainty beyond the historically common 15-year term.

2. Competitive Allocation and Strike Prices

Revenue support is not normally granted automatically. Projects compete through allocation rounds subject to eligibility requirements, technology pots, budgets and Administrative Strike Prices.

The Administrative Strike Price operates as the maximum price government is generally willing to offer for a particular technology. Competitive bidding can produce lower clearing prices. In Allocation Round 6, offshore wind cleared at £58.87/MWh in 2012 prices, while certain permitted-reduction projects cleared at £54.23/MWh.

The legal design therefore seeks to reconcile two objectives: investment certainty for generators and value for money for consumers.

3. Current Evolution of Offshore Wind Support

Revenue support continues to evolve. Allocation Round 8 rules apply to England, Scotland and Wales and contain updated allocation requirements. The Government has also introduced the Clean Industry Bonus, under which fixed and floating offshore wind projects may obtain additional CfD-related support where they contribute to specified sustainable supply-chain objectives.

This demonstrates that offshore wind revenue policy increasingly supports not only generation capacity but also industrial, supply-chain and decarbonisation objectives.

4. Legal Constraints

Although governments possess broad discretion to design renewable-support schemes, such schemes remain subject to public-law requirements. Decisions must remain within statutory powers, apply published eligibility rules consistently, avoid irrational discrimination and respect consultation or procedural requirements where applicable.

Developers may have commercial expectations concerning support schemes, but those expectations do not normally create an immutable right to continuation of a particular subsidy regime.

5. Case Law

Drax Power Ltd v Secretary of State for Energy and Climate Change [2014] EWCA Civ 1153

Facts: The dispute arose during the transition from the Renewables Obligation system to Contracts for Difference. Drax challenged decisions concerning eligibility for transitional renewable support.

Legal Issue: Whether government had lawfully applied the statutory framework governing access to renewable-generation support.

Judgment: The Court of Appeal examined the support scheme according to its statutory terms and upheld the relevant governmental approach.

Legal Principle/Ratio: Renewable-support entitlement depends upon the legal conditions created by the governing statutory and regulatory framework; developers cannot rely solely on commercial expectations.

Significance: The case illustrates that offshore-wind revenue support must be administered according to legally defined eligibility and allocation rules.

Solar Century Holdings Ltd v Secretary of State for Energy and Climate Change [2016] EWCA Civ 117

Facts: Solar developers challenged early closure of the Renewables Obligation to certain large-scale projects, arguing that the policy change interfered with legitimate expectations.

Legal Issue: Whether alteration of an established renewable-support regime was unlawful.

Judgment: The Court of Appeal rejected the challenge and accepted that government could amend support arrangements within its lawful statutory authority.

Legal Principle/Ratio: Renewable-energy investors cannot generally assume that subsidy arrangements will remain unchanged indefinitely.

Significance: The principle applies equally to offshore wind: long-term investments depend upon regulatory stability, but support schemes remain capable of lawful redesign.

Ålands Vindkraft AB v Energimyndigheten, Case C-573/12

Facts: Sweden awarded renewable-energy certificates principally to electricity generated within Sweden. A wind generator producing electricity in Finland challenged its exclusion.

Legal Issue: Whether territorially limited renewable support was compatible with EU law.

Judgment: The Court of Justice upheld the national support framework.

Legal Principle/Ratio: States may design renewable-support schemes targeting domestic renewable generation, subject to applicable EU legal requirements.

Significance: Offshore-wind support can lawfully use geographically and technologically targeted mechanisms where supported by the governing legislative framework.

6. Conclusion

Revenue support for offshore wind combines CfDs, competitive auctions, strike prices, long-term contracts and increasingly industrial-policy incentives. Its purpose is to reduce revenue uncertainty while preserving competition and consumer value. Case law confirms that such support is legally permissible but remains governed by statutory authority, transparent eligibility requirements, rational administration and the possibility of lawful regulatory reform.