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The Stockholm Environment Institute (SEI) 2025 results report details the organization's progress in driving sustainable development through scientific research, capacity building, and policy engagement. Key achievements include the development of the 2025 Production Gap Report, the creation of the Integrated Guide for Business Greenhouse Gas and Air Pollutant Emission Assessment, and the support of Kazakhstan's NDC 3.0. SEI also highlights its 'One-SEI' programs, which foster cross-centre collaboration on themes such as sustainable transport, food systems, and finance. Organizationally, SEI reports a 52% reduction in air travel emissions per employee since 2017 and an increase in peer-reviewed journal outputs by 30% over 2024.

The report argues that European security of supply planning and clean procurement policies have been uncoordinated, often resulting in capacity mechanisms that favor fossil fuels and contracts that distort short-term market signals. It proposes a shift toward 'market-aligned' contracting—such as index REC structures—and co-optimized multi-product markets that separately value energy, capacity, and clean attributes to attract clean investment without sacrificing operational efficiency.

The document examines urban heat islands (UHI) in Pärnu, Estonia, highlighting how urban density and coastal dynamics intensify heat. It argues that heat risk is an interaction between physical hazards and social vulnerability, particularly for children and the elderly, and advocates for targeted planning based on spatial mapping of these factors.

The document examines the 'greying' of Europe and the resulting political tensions, the failure of pronatalist policies in Hungary and Poland, the role of digital platforms in youth-led protests in Nepal and Africa, and the structural challenges of the kafala system in the Middle East. It advocates for institutional reforms to ensure intergenerational justice and a shift away from growth-oriented economics toward a model centered on care.

The policy brief examines the potential of small modular reactors (SMRs) to provide firm, low-carbon energy and industrial heat within the EU. It identifies significant structural barriers to deployment, including fragmented national licensing processes, uncertain state aid timelines, and a lack of standardised financing models. The author argues that to avoid a series of isolated, high-cost projects, the EU must move toward serial production and regulatory alignment, focusing early efforts on a limited number of mature designs to build supply chain and workforce capacity.

The report identifies 27 factors across four themes—EU internal dynamics, expected effects of enlargement, attitudes/norms/perceptions, and external factors—that influence EU accession decisions. It argues that while the process is formally merit-based, EU actors exercise significant discretion, with normative factors dominating early candidacy and economic or political interests predominating during later negotiations. The analysis highlights how these factors varied across the 'Big Bang' (2004), 'Coda' (2007), and Croatia (2013) rounds, and provides forecasts for the 'Trio' of Ukraine, Moldova, and Georgia.

The document examines how Poland's high-carbon, energy-intensive economy leads to higher power and gas prices for businesses compared to the EU average, as well as significant costs from the EU Emissions Trading System (ETS). It posits that transitioning to renewables and improving energy efficiency can lower production costs, stabilize energy prices through Power Purchase Agreements (PPAs), and increase GDP. The briefing highlights that achieving net-zero emissions could add 0.2% to Poland's annual GDP through 2050. It also discusses the role of emissions transparency and the growth of the service sector as additional avenues for competitive differentiation.

The Just Transition Compass serves as a non-prescriptive guide to move Just Transitions from high-level dialogue to concrete implementation. It defines core principles of distributive, procedural, and restorative justice, identifies systemic barriers to national implementation—such as limited subnational capacity and siloed finance—and analyzes the political tensions within the UNFCCC's Just Transition Work Programme (JTWP). The report advocates for a permanent international coordination mechanism to align fragmented efforts, manage the cross-border impacts of unilateral trade measures like the EU's CBAM, and mobilize private capital through sustainable finance taxonomies.

The document examines how Poland's high energy intensity and reliance on fossil fuels create economic vulnerabilities, specifically through high electricity and gas prices and EU ETS costs. It posits that transitioning to low-emission technologies and improving energy efficiency can lower production costs and boost GDP. The briefing highlights the role of renewable energy, such as wind and solar, and Power Purchase Agreements (PPAs) in stabilizing energy prices. It also discusses the importance of emission transparency for consumer appeal and provides case studies of Polish companies like ORLEN, Galmet, and Kompania Piwowarska implementing decarbonization strategies.

The document outlines the views of TSOs from Bulgaria, Estonia, Latvia, Lithuania, Poland, and Slovakia regarding EU grid development. While generally supportive of the European Grids Package, these operators express low confidence in EU-level coordination, citing administrative burdens and a perception of Western European dominance in policy shaping. Key barriers identified include outdated infrastructure, regulatory fragmentation, and complex access to EU funding mechanisms like the Connecting Europe Facility (CEF). The TSOs emphasize the need for more practical, inclusive reforms that respect national sovereignty and address specific security risks for countries on the EU's external borders.

The report argues that interconnectors are critical for European energy security, having prevented three major blackouts in the last five years and providing a lifeline to Ukraine and Moldova during Russian aggression. It highlights that 55% of Europe's power system remains at risk due to limited import options, with Spain, Ireland, and Finland being particularly exposed. The document also details the vulnerability of infrastructure to sabotage, citing nine incidents in the Baltic Sea, and calls for accelerated deployment of new capacity and strengthened security measures to protect the grid from hybrid warfare.

The global economy consumes approximately 100 billion metric tons of resources annually, with 75% coming from non-renewable sources. While the European Union leads in circular economy policy, global resource productivity has stalled since 2000, and the world must reduce per capita material consumption from 12.6 metric tons in 2022 to below 5 metric tons by 2050 to ensure sustainability. Significant disparities exist in consumption, with the top 25% of the population using 52% of the world's resources. Despite some progress in municipal waste recycling—averaging 35% across OECD countries—and the regulation of single-use products in 75 countries, systemic changes in product design and corporate monitoring are required to decouple economic growth from resource extraction.

ClientEarth critiques the European Commission's 'Roadmap towards Nature Credits', warning that a market for biodiversity credits could undermine EU environmental law if not strictly separated from regulatory obligations and offsetting. The organization argues that the biodiversity financing gap—estimated at 19 billion euros per year in the EU—should first be addressed by scaling up public funds and redirecting the 48 billion euros in annual harmful subsidies. ClientEarth recommends that any future credit system be strictly outcome-based, exclude 'business-as-usual' practices, and prohibit the use of credits for ecological compensation (offsetting) to avoid 'net loss' of biodiversity. It further highlights the scientific complexity of measuring biodiversity compared to carbon, cautioning against reductionist proxy metrics that could lead to greenwashing.

The document identifies significant variability in the quality of Estonian school meals and highlights systemic issues including insufficient funding, low professional prestige for school cooks, and regulatory barriers to using local, seasonal produce. It advocates for a national vision of sustainable school meals based on ten elements—including health, affordability, and planetary boundaries—and introduces the 'Whole School Food Culture' framework to integrate nutrition into education. Key recommendations include increasing state funding in line with inflation, establishing national minimum criteria for procurement to reduce regional inequality, and ensuring daily plant-based options for all students.

The report evaluates renewable energy options for a municipal water station in Ukraine serving 400,000 residents. It compares 100% decentralised systems (PV+Battery vs. Wind+Battery) and feasible grid-connected hybrid systems, finding that while wind is more cost-effective, solar PV is the only viable on-site installation due to space constraints. For heating, water-to-water heat pumps are identified as the optimal solution. The report also maps international financing opportunities from institutions like the EBRD, EIB, and World Bank to support implementation.

The policy brief examines the energy landscape of Central and Eastern Europe (CEE) following Russia's invasion of Ukraine, highlighting the region's struggle to balance immediate energy affordability with long-term decarbonisation. It identifies new security risks, specifically China's dominance in clean energy supply chains and conflicting policy signals from the US and EU. The author advocates for a technology-neutral approach—integrating nuclear, renewables, and emerging technologies like CCS—and suggests that CEE can become a clean-tech manufacturing hub. Furthermore, it emphasizes the strategic importance of integrating Ukraine, Moldova, and the Western Balkans into the EU energy grid to enhance regional resilience.

Analysis of EU National Energy and Climate Plans (NECPs) indicates a structural shift toward a cleaner, electrified economy, with gas demand projected to fall by 7% by 2030. The EU is targeting a 30% electrification rate and a 66% share of renewables in electricity generation by 2030. While solar targets are achievable and potentially conservative compared to market outlooks, wind targets face significant implementation challenges due to grid and permitting bottlenecks. The report recommends that the European Commission enforce more comprehensive and digitally accessible reporting for future NECP cycles.

The document explores the ideological battle over the concept of 'freedom,' contrasting the right-wing's individualistic, consumer-driven 'freedom from constraint' with a proposed 'Green freedom' based on interdependence and ecological limits. It analyzes how this struggle manifests across various domains: the gig economy's algorithmic management, the impact of immersive technologies (XR) on cognitive autonomy, the targeting of gender studies by illiberal regimes, and the need for 'comprehensive security' in the Baltic states that integrates social welfare with military defense. The text argues that for the Green movement to succeed, it must move beyond technical expertise and reclaim freedom as a collective, emancipatory value that decouples wellbeing from economic growth.

The report calls for the EU to adopt a 2035 NDC target of at least 72.5% emissions reduction, aligning with a straight-line path toward a 90% reduction by 2040 and net zero by 2050. It emphasizes that a robust, investible target, supported by the Clean Industrial Deal and sectoral policies in energy, transport, and industry, will reduce dependence on fossil fuel imports—which cost the EU EUR 376 billion in 2024—and enhance global competitiveness. The authors advocate for a 'competitive sustainability' approach and strengthened public-private collaboration, citing models from Denmark, Sweden, and the Netherlands to accelerate the transition.

The case of Fridays for Future Estonia v. Eesti Energia involved a legal battle led by the NGO MTÜ Loodusvõlu to stop the construction of the ENEFIT282 shale oil plant in Narva-Jõesuu. The claimants argued that the plant violated the Paris Agreement, EU climate neutrality goals, and the UN Sustainable Development Goals, while also posing risks to Natura 2000 conservation areas. After several rounds of litigation and rejected requests for interim relief, the Supreme Court of Estonia cancelled the construction permit in October 2023. The Court found that the project's environmental assessments failed to identify impacts on climate change and the conservation of the Puhatu bird, necessitating the cancellation under the precautionary principle.