Publications & Documents

This report presents the OECD methodological guidelines for compiling Environmentally Related Tax Revenue accounts. The guidelines are in line with the System of Environmental Economic Accounting and ensure consistency with national and international data sources and manuals. The OECD guidelines are based on those of Eurostat with refinements and additional memo items. First, revenue from greenhouse gas taxes is split into two sub-categories: an energy-related part (recorded as an energy tax) and a non-energy-related part (recorded as a pollution tax). Second, four 'memo items' are introduced to enhance the relevance of the accounts for policy work: (i) certain land taxes, (ii) taxes on oil and natural gas extraction, (iii) taxes on the resource rent and (iv) elevated VAT levied on environmentally related tax bases. The practical application of these guidelines was successfully pilot-tested in 2018-19, and the guidelines were implemented in the 2019 and 2021 rounds of data collection from OECD member and partner countries. The results show that it is feasible to compile the accounts, including the refinements and the additions outlined in this document, across OECD and beyond.

This report presents developments of the work of the Inclusive Forum on Carbon Mitigation Approaches (IFCMA) since its official launch in February 2023.

A megadiverse county, Costa Rica is known globally for its success in reversing deforestation and pursuing a growth model based on the sustainable use of its environmental resources. However, energy use and related greenhouse gas emissions increased in the last decade. Private cars are a major and growing source of emissions affecting climate and air quality. Waste disposal still relies on landfills, and much wastewater is untreated. Costa Rica’s extensive protected area network and pioneering programme of payments for ecosystem services have helped reduce biodiversity loss and extend forests’ carbon sequestration capacity. However, more should be done to tackle pressures on biodiversity from development of infrastructure and settlements, tourism, farming and fishing. The sheer scale of investment needed to achieve the Sustainable Development Goals calls for improving the efficiency of public spending, mobilising private finance, strictly enforcing regulations and providing adequate incentives. This is the first OECD Environmental Performance Review of Costa Rica. It evaluates the country’s progress towards sustainable development, with a special chapter focusing on biodiversity, and provides 52 recommendations.

While many countries of Latin America and the Caribbean (LAC) have committed to achieving climate neutrality and building resilience, translating these commitments into actions is imperative. This requires, for instance, better management of increasing risks from climate change and climate variability, as well as reducing greenhouse gas (GHG) emissions through promoting innovation and green investments. Achieving these goals will require comprehensive long-term strategic and financial planning, a more integrated and inclusive approach, which better aligns adaptation and mitigation policies and measures across different sectors, albeit at a differentiated level. This report identifies LAC countries’ main climate change policy priorities, which were discussed through a series of Regional Policy Dialogues and Expert Workshops and complements these with findings of recent analyses by the OECD and other international partners. It explores issues related to their implementation on climate adaptation, mitigation, and cross-cutting policy areas. The report covers various economic sectors, ranging from energy, transport, agriculture and tourism, as well as environment-related policies on infrastructure, water, biodiversity and ecosystems. The report also explores cross-cutting topics, such as climate governance and finance, environmental information, technology transfer, circular economy, oceans, gender equality and education. To overcome challenges and grasp the opportunities associated with a transition towards climate resilience and neutrality, the report proposes an Action Plan, with 40 key policy recommendations.

This report explores how institutional investors can apply risk-based due diligence as recommended by the OECD Guidelines for Multinational Enterprises on Responsible Business Conduct and help them prevent and mitigate adverse climate impacts associated with their investee companies on society and the environment. It provides practical recommendations on how to conduct due diligence as a way to connect climate commitments at portfolio level with real-economy impacts and draws on other frameworks and tools for assessing, managing or disclosing climate impacts associated with investments.

Water-related risks are intrinsically linked to both climate and nature challenges and can be closely tied to socio-economic challenges, such as poverty, food security, and domestic and international conflicts. There is increasing evidence that water-related risks are financially material across actors in the financial system, and further still, that there may be important implications for financial stability. However, a review of current practices indicates that these risks are not fully captured by current approaches to assessing risk. This working paper explores how the financial sector understands the concept of financial materiality as a lever for decision making on water-related climate and nature risks. The paper also looks at how regulatory and supervisory guidance considers water in the context of climate and nature risks, and finally how sustainable finance tools and initiatives can support market participants in gaining an improved understanding of water-related risks.

Since the adoption of the Paris Agreement, governments and economic actors have increasingly been setting greenhouse gas emissions reduction or net zero targets. Amidst risks of delayed action and greenwashing, there is need to understand whether climate related targets and transition plans are consistent with the Paris Agreement. Climate change mitigation scenarios can be used as inputs to design such targets and plans, and as benchmarks to assess progress towards them. In this context, this paper proposes criteria for selecting global climate change mitigation scenarios that can be considered consistent with the Paris Agreement temperature goal and emissions objectives, based on state-of-the-art literature on climate science and mitigation scenarios.

Climate change mitigation scenarios are a key forward-looking input for a range of financial sector analyses and assessments. The inaccurate use of mitigation scenarios can, however, contribute to unintended incentives, environmental integrity concerns, and greenwashing risks. This paper aims to inform climate change mitigation scenario providers, financial sector participants and stakeholders, and climate policymakers on how they may contribute to improved use of scenarios for the purposes of target setting and alignment assessments in the financial sector. To do so, the paper analyses climate change mitigation scenarios currently used for these purposes, based on the following analytical dimensions: consistency with the Paris Agreement, practicality, and underlying assumptions.

Carbon lock-in occurs when high-emission infrastructure or assets continue to be used, despite the possibility of substituting them with low-emission alternatives, thereby delaying or preventing the transition to near-zero or zero-emission alternatives. Transition finance, which focuses on the dynamic transformation and decarbonisation of hard-to-abate sectors, frequently faces the issue of carbon lock-in, particularly in considerations of investment feasibility and eligibility. Despite most transition finance approaches incorporating lock-in avoidance as a core principle, existing transition instruments and approaches put in place varying or limited mechanisms to prevent lock-in. Building on the OECD Guidance on Transition Finance, this report takes stock of how carbon lock-in risk is addressed in existing transition finance approaches (such as taxonomies, roadmaps, or guidance), financial instruments, and relevant public and private investment frameworks and methodologies. The report provides good practices on the integration of credible mechanisms to prevent carbon lock-in, address greenwashing risks and build confidence in the market. It can inform both public and private actors in the development of transition finance approaches, standards for green, transition and sustainability-linked debt, frameworks for corporate transition plans, or broader climate-related disclosure frameworks.