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As of the end of 2025, the Climate Bonds Initiative recorded a cumulative aligned GSS+ debt volume of USD6.8tn, with annual aligned volume reaching USD1.0tn for the third consecutive year. Green bonds remain the dominant label, accounting for 64% of 2025 aligned volume (USD653.5bn), while sustainability bonds reached a record annual volume of USD217.3bn. Europe leads globally in both annual and cumulative aligned volume, though the USA remains the largest single country source of cumulative aligned volume at USD887.4bn. The report also highlights the launch of the Climate Bonds Resilience Taxonomy (CBRT) to address the funding gap for climate adaptation and resilience, exemplified by the world's first CBRT-certified resilience bond issued by the Tokyo Metropolitan Government.

In 2025, solar and wind power expanded fast enough to outpace global electricity demand growth for the first time over a sustained period. Solar growth accelerated in Africa and Central Europe, while BRICS nations now generate over half of global solar power. The rise of 'electrotech'—led by China—and falling battery costs are enabling fossil-free baseload power and supporting the energy demands of AI and data centres.

As of October 2025, the all-in capex for large, long-duration utility-scale BESS projects outside China and the US is approximately $125/kWh, resulting in a Levelised Cost of Storage (LCOS) of $65/MWh. This cost reduction is driven by cheaper Chinese-manufactured equipment, longer battery lifetimes, and improved efficiencies. Consequently, dispatchable solar—storing 50% of daily generation—is estimated to cost $76/MWh, making it a highly competitive option for meeting global energy demand growth.

Viet Nam, the Philippines, and Indonesia are transitioning from coal-reliant economies to renewable energy hotspots, collectively accounting for nearly 60% of ASEAN's power demand and emissions. While all three have set ambitious 2030 targets for renewables to exceed 50% of installed capacity, they face bottlenecks in permitting, grid infrastructure, and financial risk. The report highlights that solar-plus-battery integration significantly improves internal rates of return (IRR), particularly in Indonesia, and emphasizes the role of market reforms—such as Viet Nam's Direct Power Purchase Agreements and the Philippines' removal of foreign ownership restrictions—in attracting private capital.

The analysis identifies five critical design choices in Canadian industrial carbon markets that undermine their effectiveness: overly generous performance standards, uneven playing fields for facilities, strict limits on credit use, allowing 'opt-in' facilities to exit markets, and using revenues to offset price signals. These flaws have led to credit price crashes in provinces like Alberta and reduced the overall incentive for industries to decarbonize.

The report examines the role of securitisation in developing African capital markets, noting that while South Africa has a mature market, other sub-Saharan regions remain nascent. It identifies significant barriers, including fragmented legal and tax frameworks, a lack of a 'ratings culture', and limited understanding among financial institutions. Despite these challenges, the study finds a substantial supply of securitisable assets in banking, microfinance, and fintech sectors. It recommends a holistic regulatory approach, the use of anchor investors from DFIs and MDBs, and the adoption of scalable structures like warehouse facilities to mobilise private capital and bridge the private credit gap.

Based on workshops in Utah and Colorado, RMI identifies sustainable aviation fuel (SAF) as the primary near-term solution for decarbonizing aviation, while hydrogen and electric propulsion require long-term infrastructure planning. The report highlights that airports are structurally limited in leading this transition because they do not control fuel demand or aircraft certification. Key recommendations include investing in pilot programs, developing long-term master plans for new propulsion technologies, and forming regional airport coalitions to share risks. A preliminary analysis suggests that regional routes under 1,000 nautical miles with aircraft under 90 seats are the most viable early candidates for hydrogen transition.

Merchant BESS in India became financially viable in 2024 due to falling battery costs and increasing price volatility in the Day Ahead Market (DAM). The report finds that BESS can achieve internal rates of return (IRR) up to 24% by combining energy arbitrage with ancillary services, with shorter-duration systems (1-2 hours) currently offering better returns than 4-hour systems.

The report examines how unreliable electricity and the use of medical equipment designed for high-income countries undermine healthcare in Sub-Saharan Africa. Based on data from 29 facilities in Kisumu County, Kenya, it finds that many essential devices are underutilized or non-functional due to power instability, high energy consumption, and a lack of maintenance. It argues for the adoption of energy-efficient, context-aware medical appliances and decentralized renewable energy systems to improve health outcomes and reduce operational costs.

The document argues that while methane abatement is a cost-effective near-term strategy to limit global warming, capital deployment in the oil and gas sector is significantly lagging behind the targets required for the IEA's Net Zero Emissions by 2050 Scenario. It proposes a framework for using use-of-proceeds (UoP) bonds, key performance indicator (KPI)-linked bonds, and conventional debt with methane-related covenants to bridge this investment gap. The authors highlight the critical role of National Oil Companies (NOCs) and the need for credible, science-based guardrails to mitigate greenwashing and fungibility risks.

The report argues that ASEAN's data centre industry requires a more diverse range of corporate renewable procurement options and stronger national sustainability frameworks to ensure sustainable growth. It evaluates various mechanisms—such as Power Purchase Agreements (PPAs), green tariffs, and Renewable Energy Certificates (RECs)—noting that limited availability of these options, particularly in countries like Indonesia, hinders investment. The text emphasizes that national frameworks are essential for managing energy transition risks and improving data transparency, as international standards are not always tailored to regional needs.

SoffitDuct is a lightweight, prefabricated HVAC ductwork system designed to replace invasive site-built soffits in multifamily retrofits. Demonstrated at the Corona Del Rey apartments in California, the system uses foil-faced foam to provide a 'finish-ready' exterior that can be painted, reducing contractor time and duct leakage. While the project identified challenges in passing through structural wall framing, it estimates that the solution is applicable to 6.3 million residential units (45%) in California, excluding studios, one-bedroom units, and single-story homes with attics.

The report identifies fragmented policies and challenged economics as primary barriers to the US hydrogen industry's scale-up, risking a loss of global leadership. It suggests that federal and state policymakers should maintain incentives, promote exports, and increase demand-side supports across sectors such as steel, aviation, and maritime shipping to secure supply chains and expand the industrial base.

The report assesses the nascent green bond market in Africa, which has raised approximately USD 9.6 billion through 76 issuances since 2013. While the market is growing, it remains a niche segment constrained by high issuance costs—up to 5% of total deal value compared to 0.9% in Europe—and macroeconomic instability. The analysis finds that green bonds provide financial additionality for issuers through faster capital raising and access to diverse investors, but primarily fund mitigation projects, with only 7% of proceeds going to pure adaptation. Social inclusion and gender considerations are generally absent from design but occur as indirect co-benefits, such as job creation. The report recommends the development of an African Sustainable Finance Taxonomy, the mandatory inclusion of 'Do no harm' and gender provisions, and the use of project preparation facilities to make adaptation projects more bankable.

The report finds that while post-issuance reporting in the GSS bond market is widespread and generally high-quality, significant gaps remain in the disclosure of project lifetimes, impact assessment methodologies, and quantitative linkages to entity-level sustainability strategies. Analysis of 75 issuers (USD 1.4tn issued) shows that 88% of 2020–2022 issuers reported allocations, but 35% failed to report within 365 days of issuance. Sovereigns and development banks demonstrated the highest reporting quality, while non-financial corporates were the least likely to provide entity-level framing. The report recommends the adoption of standardized reporting platforms and mandatory regulatory frameworks to enhance market transparency.

The report examines the value chains of six critical energy transition minerals (CETMs): copper, lithium, manganese, neodymium, nickel, and silicon. It details global production and reserves, processing technologies, and the dominant role of China in refining and processing. For India, the document highlights a significant gap between domestic mineral resources and the demand required for low-carbon technologies, emphasizing the need for localized refining, increased private investment, and strategic international partnerships to reduce import dependence.

The report examines the role of climate-smart agriculture (CSA) in the East African Community (EAC) to enhance coffee production and facilitate exports to the EU. It highlights that while exports from countries like Ethiopia, Kenya, and Uganda have grown by approximately 60% over ten years, growers must scale up CSA practices—such as mulching and agroforestry—to comply with EU requirements regarding traceability, biodiversity, and sustainability certifications.

The report outlines a comprehensive strategy for transitioning Nigeria's mass transportation to electric buses, emphasizing the Gross Cost Contract (GCC) as the most viable procurement model. It identifies the transport sector as a major emitter, contributing approximately 15% of national greenhouse gas emissions. Using Lagos as a primary case study, the document details technical specifications for e-buses, charging infrastructure requirements, and the financial benefits of a Total Cost of Ownership (TCO) approach. It recommends a phased 24-month implementation plan and policy reforms to encourage local assembly and renewable energy integration for charging.

The report examines the use of environmental attribute certificates (EACs) via a book and claim model to scale lower-carbon steel and concrete. It argues that this mechanism allows organizations to fund upstream decarbonization even when they cannot directly procure low-carbon materials. The authors identify critical infrastructure needs—including certification schemes, standards, registries, and reporting guidelines—and share lessons from a Microsoft pilot, noting that the market is currently in early stages with a lack of fit-for-purpose accounting methods.

The report argues that utility-enabled distributed energy resources (DERs) can address Nigeria's power sector bottlenecks, such as high ATC&C losses and supply deficits. It identifies a market opportunity exceeding 20 GW over the next decade, which could reduce carbon pollution by 33 million tons per year and lower customer energy costs by up to 25%.