Greenhouse gas emissions continued to rise in 2025, posing significant challenges to global climate goals. Despite this troubling trend, new data shows that the world is making notable strides in the transition to clean energy. According to research from the Energy & Climate Intelligence Unit (ECIU), global investments in clean energy are projected to reach a record $2.2 trillion this year.
Gareth Redmond-King, the ECIU’s international lead, acknowledged the progress but emphasized the urgency of action. “Is this enough to keep us safe? No, it clearly isn’t,” he stated. “Is it remarkable progress compared to where we were headed? Clearly it is.”
Clean Energy Investment Hits New Heights
Investment in clean technologies significantly outpaced funding for fossil fuels in 2025. For every $1 allocated to fossil fuel projects, $2 was directed toward clean power, according to the ECIU. In particular, the four largest polluters—China, the EU, the U.S., and India—saw an even higher ratio of $2.60 for clean technologies.
The first half of 2025 set a record for renewable energy funding, totaling $386 billion, up 10% from the previous year, as reported by BloombergNEF. Demand for renewable energy surged, with solar and wind power meeting all new electricity demand globally during the first three quarters of the year. This surge in capacity positions the world closer to the target set at COP 28 in Dubai to triple clean power by 2030.
China has emerged as a frontrunner in this transition, delivering an estimated 66% of new solar capacity and 69% of new wind globally in 2025. Renewable energy advancements were also noted in parts of Asia, Europe, and South America.
Artificial Intelligence and Battery Innovations
The rising demand for artificial intelligence (AI) technologies has positively impacted green technology investments. In the first three quarters of 2025, global clean tech investment, particularly in next-generation nuclear reactors and renewable energy solutions, exceeded all of 2024’s funding levels. This marked the first annual increase since the peak in 2022.
Despite setbacks in climate policies under the Trump administration, the clean energy sector thrived, with the S&P’s main gauge for clean energy rising by about 50% this year. The appetite for clean technology has also driven significant investments in upgrading power grids, essential for the global energy transition.
Battery prices, a key factor in the electrification of various products, fell to a record $108 per kilowatt-hour in 2025, a drop of 8% from the previous year. This decline is attributed to improved manufacturing processes and increased production, overshadowing rising metal prices. The U.S. Energy Information Administration predicts that 18.2 gigawatts of storage capacity came online this year, a 77% increase from 2024.
International Climate Agreements and Adaptation Strategies
In a year marked by significant political challenges, the global community achieved notable wins. The High Seas Treaty, ratified in 2023, will come into force in January 2026. This agreement facilitates the protection of international waters, covering 60% of the seas outside national jurisdictions.
Additionally, the International Court of Justice issued an advisory opinion in July, stating that countries could violate international law if they fail to adhere to the 1.5°C global warming limit established at the Paris climate conference in 2015. This ruling, brought forward by representatives from Vanuatu, could empower NGOs and campaigners to hold governments accountable for climate inaction.
While the U.S. rolled back several environmental policies, countries like Australia, Denmark, and the UK set more ambitious emissions goals. Despite a cautious approach from China, experts expect it to exceed its target of cutting emissions by 7% to 10% from peak levels by 2035.
As nations grapple with the realities of climate change, funding for adaptation measures is increasing. In November 2025, the Bill & Melinda Gates Foundation pledged $1.4 billion over four years to enhance resilience among farmers across Africa and Asia.
The recent devastation caused by Hurricane Melissa in Jamaica highlighted the importance of such measures. The storm led to a full payout of Jamaica’s $150 million catastrophe bond, demonstrating the role of financial instruments in managing climate risks.
In North Carolina, a new catastrophe bond incentivizes climate adaptation by returning funds for wind-resistant “super roofs” if no major losses occur. This innovative approach attracted $600 million in investor interest, nearly doubling its initial offering.
Despite the challenges posed by rising greenhouse gas emissions, 2025 witnessed a notable shift toward clean energy investments, innovative technologies, and international cooperation. As the world moves forward, the successes achieved this year provide a foundation for future climate action.
