Record-breaking Earth Energy Imbalance: Global Warming Acceleration and Systemic Challenges to Sustainable Development

Energy Imbalance: The Core Metric of Global Climate Change

Earth's Energy Imbalance (EEI) is one of the most direct indicators of the extent to which human activities are disrupting the climate system. According to the fourth edition of the *Global Climate Change Indicators* (IGCC) report released in June 2026, the decadal average of EEI reached a record 1.12 W/m² in 2025, an increase of about 40% from the average of 0.79 W/m² during the IPCC Sixth Assessment Report (AR6) period in 2019. This figure means that each square meter of the Earth's surface absorbs approximately 3.5 × 10²² joules of heat per year—tens of times the global annual total energy consumption.

The continued rise in EEI is not a short-term fluctuation. The report shows that this imbalance has been widening since the 1970s, and the increase in recent years has exceeded climate model projections. This not only indicates that global warming may be faster than expected, but also fundamentally challenges global development pathways, ESG assessment frameworks, and international cooperation mechanisms.

From Energy Imbalance to Development Imbalance: The Accelerated Impact of Climate on the Global South

90% of the accumulated heat is absorbed by the oceans. The number of marine heatwave days has more than tripled since the early 1990s. In 2025, the global average number of marine heatwave days was 65, meaning more than one such event per week. This change directly affects fisheries, coral reef ecosystems, and the food security of coastal communities—assets heavily relied upon by countries in the Global South.

At the same time, extreme land temperatures are intensifying. During 2016–2025, the average daily maximum temperature increased by 1.92°C compared to pre-industrial levels, nearly 0.5°C higher than the previous decade (2006–2015). For low-income countries lacking adaptive capacity, heatwaves mean reduced labor productivity, increased health risks, and lower agricultural yields, further widening the development gap between the Global North and South.

Sea level rise provides another long-term signal. In 2025, the global average sea level was about 23 cm higher than in 1901, and the rate of rise is accelerating (3.67 mm/year during 2006–2025, more than double the rate of 1.69 mm/year during 1976–1995). This directly threatens the living space of Small Island Developing States (SIDS) and coastal delta regions (such as Bangladesh and Vietnam), and may trigger large-scale climate migration, testing the inclusiveness and resilience of global governance systems.

"Hidden Liabilities" from an ESG Perspective: Energy Imbalance and Investment Risk Reassessment

The ESG investment framework is facing a harsh reality: current physical risks are systematically underestimated. Long-term trends in energy imbalance indicate that even if emission reduction commitments are partially fulfilled, the accumulated heat will continue to drive temperature rises and increase extreme events for decades to come. For investors, this means the following three types of risk need to be repriced:1. Expansion of Stranded Asset Risk: Beyond fossil fuel assets, coastal real estate, agricultural infrastructure, and tourism assets face depreciation due to rising sea levels and extreme weather. 2. Declining Supply Chain Resilience: The continuous impact of marine heatwaves and high temperatures on land on shipping, agriculture, and manufacturing will reduce the reliability of global supply chains. 3. Delayed "Transition Risk" in Responsible Investment: Companies that focus only on short-term emissions reductions while neglecting adaptation investments will face greater long-term operational disruption risks.

Furthermore, the rise in EEI highlights the complexity of the "aerosol masking effect." Although aerosols (such as sulfides) have a cooling effect, their harm to health far outweighs the short-term climate benefits. ESG assessments need to more carefully weigh the co-benefits between air quality and global warming, avoiding simplistic "net-zero" narratives.

Climate Finance and International Cooperation: Bridging the Gap Between Science and Action

The IGCC report emphasizes that global greenhouse gas emissions remain at historic highs (reaching 56.8 GtCO₂e in 2024), and atmospheric concentrations of carbon dioxide, methane, and nitrous oxide continue to rise. At the same time, the acceleration of Earth's energy imbalance means that the marginal impact of emissions is increasing. This places dual pressures on international climate finance mechanisms:

• Emission Reduction Gap: The ambition of existing Nationally Determined Contributions (NDCs) is far from sufficient to reverse the rising EEI trend. The report projects that global warming will exceed 1.5°C around 2030, at which point adaptation costs will increase exponentially.
• Insufficient Adaptation Funding: The global adaptation funding gap continues to widen, especially for Least Developed Countries (LDCs) and Small Island Developing States. The long-term heat accumulation represented by EEI means that sea level rise and extreme heat will be irreversible, and adaptation investments must shift from short-term projects to long-term systematic construction.

From a global development perspective, climate finance needs to be upgraded from "project support" to "structural transformation support," including helping developing countries establish climate monitoring and early warning systems (such as the global observation network relied upon by IGCC), promoting nature-based solutions (NbS), and building social protection systems to address loss and damage.

Governance Challenges: The Tension Between Scientific Consensus and Slow Action

The acceleration of Earth's energy imbalance marks a new phase in which humanity has entered a "climate emergency." However, the global governance system still operates on political cycles of five to ten years, severely mismatched with the response speed of the climate system. The value of the IGCC report lies in its annually updated indicators, providing policymakers with more timely "health checks." But the question is: as the EEI continues to rise, how many political systems can effectively utilize this information?The principle of "common but differentiated responsibilities" in international cooperation needs to be refined in conjunction with EEI. The high historical emissions of developed countries have accumulated the current energy imbalance, while developing countries, especially the Global South, are bearing disproportionate consequences. The allocation of global carbon budgets, the operation of climate compensation funds, and technology transfer mechanisms must all confront this scientific reality.

Conclusion: Reconstructing Development Logic with Long-termism

The record-breaking Earth energy imbalance is not an isolated scientific event, but a fundamental challenge to global economic models, ESG frameworks, and global governance capabilities. Decisions made in the next decade will determine whether humanity can keep warming within manageable limits. From a development research perspective, policymakers and investors need to:

1. Integrate EEI into risk analysis models as one of the macroprudential indicators; 2. Accelerate clean energy transition while simultaneously expanding adaptation investments to avoid a zero-sum game between "energy justice" and "climate stability"; 3. Strengthen global observation and data sharing systems to ensure the scientific foundation is not politicized; 4. Redefine development success — shifting from GDP growth to comprehensive indicators of carbon-inclusive social resilience and ecological health.

Only by embedding the warning of energy imbalance into every decision node of global development can we build a resilient future on a warming planet.