Energy Equity in the ICJ’s Climate Opinion: Filling The Silence On Distributive Justice

Introduction and the Stakes Behind the GA Request

In 2023, the UN General Assembly requested the International Court of Justice (ICJ) to spell out what international law requires of states when it comes to climate change. The move came after years of frustration, especially from small island states like Vanuatu, which face the sharp end of rising seas and stronger storms. For them, existing promises under the climate treaties were not enough.

Vanuatu and its allies in the Alliance of Small Island States strongly advocated for this request. Their point was simple that the law already contains obligations to prevent harm and to cooperate, but these rules are too often ignored. They contended that an advisory opinion could confer greater legal authority upon those duties.

When the Court finally issued its Advisory Opinion in July 2025, it confirmed what many expected that states must cut emissions, adapt to the damage already happening, and work together in line with principles like “common but differentiated responsibilities” (CBDR-RC). The opinion is notable for its omission. Despite repeated submissions from vulnerable states, it says very little about distributive fairness, especially about the question of whether access to energy should be treated as part of states’ climate obligations. This is striking given that the GA’s request was framed broadly asking the Court to clarify obligations ‘to ensure the protection of the climate system for present and future generations.’ That wording could have been read to include distributive fairness, since meaningful protection depends on whether all states can equitably participate in the energy transition. That silence raises a doubt that can international law meaningfully address the deep inequalities that shape who suffer most from climate change?

Party Submissions Elevate Energy Equity Within the Court’s Record

The ICJ itself has long treated GA requests in this broader, contextual manner. In the Nuclear Weapons Advisory Opinion, the Court tied its answer not only to the literal wording of the GA resolution but also to the wider humanitarian law framework it deemed necessary to give the request meaning. Similarly, in the Wall case, it interpreted the GA’s question about legal consequences to encompass issues of self-determination and occupation, even though these were not spelled out in the request. By the same reasoning, distributive fairness and energy access fall well within the GA’s 2023 mandate to clarify obligations toward present and future generations.

A striking feature of the official record is the centrality of energy access and distributive justice to the arguments advanced. Far from being peripheral concerns or rhetorical devices, these issues constituted the core of the appeals made by vulnerable states.

Bangladesh has consistently emphasized in international climate forums that energy poverty is a fundamental driver of climate vulnerability among least developed countries. According to detailed analyses of Bangladesh’s national energy profile and climate adaptation planning, a significant share of the rural population lacks reliable and clean energy access, which directly hinders resilience to climate impacts and perpetuates poverty. Bangladesh expressly characterized this as a compliance problem: without reliable energy access, adaptation measures required under Articles 4 and 6 of the UNFCCC cannot be fulfilled. In this way, energy equity was framed not as extra-developmental charity, but as part of core treaty performance.

Vanuatu and other small island states continue to highlight at the United Nations that equitable access to clean energy is not just a developmental goal but a prerequisite for fulfilling climate commitments echoing research that frames energy justice as inextricable from human rights and climate responsibility. In its submission, Vanuatu went further, linking equitable access to the duty of cooperation in Article 4(1) of the UNFCCC. It argued that cooperation cannot be genuine if entire regions remain locked in energy poverty.

The African Union has advocated for integrating just transitions into climate strategies, underlining the importance of linking adaptation and mitigation to sustainable development, especially where acute energy and economic challenges persist. The African Union similarly cast its just transition position in legal terms, presenting it as a necessary reading of CBDR-RC rather than a new aspiration. By situating distributive justice within existing principles, it invited the Court to treat energy equity as part of the interpretive content of treaty law, not a departure from it.

The Court’s Judicial Restraint and Its Consequences

These positions reflect an emerging consensus: for vulnerable regions, addressing energy poverty and ensuring fair access is essential to both climate compliance and broader social justice goals.

This wasn’t just political posturing. These statements challenged the idea that climate obligations could be understood purely through emissions targets and simple accountability. For these states, energy equity isn’t optional, it’s fundamental. The Court had before it a clear record demanding that any serious consideration of compliance must reflect this reality.

Despite this record, the Court’s opinion embodies a long-standing pattern of judicial caution. It took care to describe its task as clarifying legal obligations not adjudicating political, financial, or economic disputes. It stressed that it would not exceed the General Assembly’s mandate.

This restraint isn’t new. In the Legality of the Threat or Use of Nuclear Weapons Opinion (1996), the Court steered clear of controversial questions like proportionality, citing their political sensitivity. Similarly, in the Legal Consequences of the Construction of a Wall case (2004), the Court carefully set out broad principles but avoided prescribing specific remedies.

It’s worth contrasting this with ITLOS’s 2011 advisory opinion on Responsibilities of States in Respect of Activities in the Area, where the tribunal did not hesitate to elaborate on equitable benefit-sharing and distributive duties.

So, the ICJ’s silence on the issue of energy equity was, in many respects, a deliberate choice and a conservative one that steered around some of the toughest structural questions climate justice poses. And that choice carries consequences, especially as energy poverty remains a central barrier to effective climate action.

Doctrinal Foundations and Potential Legal Formulations

The Court’s decision to remain silent on energy equity does not mean the issue sits outside the reach of international law. On the contrary, the existing doctrinal tools already allow it to be framed as part of states’ climate obligations. The principle of CBDR-RC set out in Article 3(1) of the UN Framework Convention on Climate Change and carried forward into Article 4 of the Paris Agreement, requires that obligations be interpreted considering states different capacities and historical contributions.

Debates over CBDR-RC have always turned on distributive questions. Developed countries have pressed for uniform obligations, while developing states have insisted that equity and capacity shape the content of their duties. Far from being peripheral, this distributive element is structural. The Court itself has recognised this interpretive balance elsewhere: in Gabčíkovo-Nagymaros (1997), it held that environmental protection must be reconciled with equitable development, stressing that treaty obligations cannot be read in isolation from states’ capacity and needs.

That reasoning could have supported a modest doctrinal clarification here. A formulation consistent with the Court’s jurisprudence might have read:

The obligations of mitigation and adaptation under international climate law must be interpreted and implemented in light of equitable access to sustainable energy, understood as an aspect of the principle of common but differentiated responsibilities and respective capabilities.

This would have been entirely consistent with the Court’s normal interpretive methods under Articles 31–33 of the Vienna Convention on the Law of Treaties. Reading treaty obligations in their context and considering their object and purpose allows distributive dimensions like equitable energy access to be treated as interpretive factors. In other words, the Court would not be legislating new norms but clarifying the meaning of existing commitments in line with its standard practice.

Such a clarification would not have created new financial obligations or imposed novel duties beyond treaty texts. Rather, it would have framed equitable access as part of the interpretive content of existing commitments. This interpretive approach has precedents such as the Dutch Supreme Court in Urgenda grounded emission reductions in human rights protections, and the Inter-American Court of Human Rights in Advisory Opinion confirmed that environmental protection is inseparable from the enjoyment of human rights. Both show that courts can embed distributive concerns into the understanding of existing obligations without legislating from the bench.

Seen this way, energy equity is not an aspirational add-on, but a necessary dimension of compliance. By linking CBDR-RC to equitable access, the Court could have clarified that international law already requires states to discharge their climate duties in a manner that enables meaningful participation by those still locked in energy poverty.

Conclusion

The ICJ’s 2025 Advisory Opinion is an important step in clarifying states’ obligations on climate change. It affirms duties of mitigation, adaptation, and cooperation, and in doing so, adds weight to the legal foundations of international climate governance. Yet its refusal to grapple with equitable access to energy, an issue repeatedly raised by vulnerable states in the proceedings which leaves a striking gap.

That omission has real consequences. For countries where millions still live without reliable electricity, climate targets cannot be met in isolation from development needs. By sidestepping distributive questions, the Court avoided the hardest part of the problem: how to reconcile emission reductions with the imperative of energy access. The General Assembly’s request, together with the submissions of Bangladesh, Vanuatu, and the African Union, gave the Court room to address this tension more directly.

Closing that gap will now fall to other actors. Treaty bodies under the UNFCCC and the Paris Agreement will continue to define the balance between climate ambition and development justice. National courts are already being asked to weigh energy poverty against climate obligations, and arbitral tribunals are likely to face disputes over climate finance and technology transfer.

The challenge ahead is to ensure that climate accountability is not defined only in terms of emissions, but also in terms of equitable opportunity to transition. That is the condition for protecting not just the climate system, but the dignity and survival of the communities most at risk.