Search Climate Insights Directory
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Faster and Cleaner 2: It only takes a few countries to kick-start energy
The report examines the progress of decarbonisation across three global energy sectors. It highlights the rapid growth of wind and solar power, the emerging scale of electric vehicle sales, and the relative lag in the buildings sector despite available technological solutions.
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Document type: Report
Rate-Design Best Practices for Public Electric-Vehicle Chargers
The policy brief examines how traditional utility demand charges create a financial barrier for public DC fast-charging networks, often accounting for over 90% of electricity costs. It proposes a shift toward time-varying volumetric rates and low fixed charges to better align costs with the sporadic usage patterns of EV charging.
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Document type: Policy brief
Formal comments on the Integrated Resource Plan (IRP) Update Assumptions, Base Case and Observations 2016
The CSIR's analysis of South Africa's Draft IRP 2016 concludes that a 'Least Cost' scenario—prioritising solar PV, wind, and flexible power—is significantly cheaper, creates more jobs, and emits less CO2 than the government's Base Case and Carbon Budget scenarios. The report argues that the Draft IRP 2016 imposes annual new-build constraints on solar and wind without techno-economic justification, which artificially inflates costs and pushes the system toward new coal or nuclear investment. By 2050, the CSIR finds that a renewable energy share of over 70% is cost-optimal. Technical assessments on system inertia and transmission infrastructure indicate that the costs of maintaining stability in a high-renewable system are low, representing less than 1% of total power generation costs.
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Document type: Report
Stimulating private market development in green securitisation in Europe: the public sector agenda
The document argues that green securitisation—aggregating small-scale low-carbon assets into tradable securities—can unlock significant institutional capital for the energy transition in Europe. It identifies barriers such as a lack of standardised contracts, limited asset volumes per lender, and low credit ratings for new asset classes. To overcome these, the authors propose a public sector agenda including the creation of green asset guidelines, the development of standardised loan contracts, the establishment of financial warehouses, and the provision of credit enhancements and cornerstone investments by development banks and the European Central Bank.
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Document type: Policy brief
Trump FY2018 'Skinny' Budget Proposal: An Overview of the Sustainable Energy, Buildings, Transportation and Climate Implications
The document analyzes proposed budget cuts in the FY2018 'skinny' budget, highlighting the elimination of bipartisan programs for low-income energy assistance, climate research, and rural transportation. It details specific reductions across the USDA, DOE, EPA, NASA, and the Department of State, arguing that the 'America First' approach prioritizes physical security and fossil fuels over climate resilience and international cooperation.
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Document type: Policy brief
Clean Energy Momentum State Ranking
The Union of Concerned Scientists (UCS) developed the Clean Energy Momentum State Ranking to evaluate how US states are driving the transition to clean energy. The ranking uses 12 metrics across three categories: technical progress (renewable energy generation, energy savings, and electric vehicle sales), direct effects (job creation and pollution reduction), and future-oriented policies (renewable energy, energy efficiency, and carbon reduction). California is identified as the overall leader, while Vermont, Massachusetts, Rhode Island, and Hawaii also rank in the top five. The analysis concludes that state-level leadership is critical for national momentum, particularly in creating jobs and improving public health, and recommends that states facilitate business involvement and improve energy equity for low-income communities.
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Document type: Executive summary
Clean Energy Momentum Ranking State Progress
The Union of Concerned Scientists (UCS) created the Clean Energy Momentum State Ranking to evaluate how US states are advancing renewable energy, energy efficiency, and vehicle electrification. California, Vermont, and Massachusetts are identified as top overall leaders. The report emphasizes that state-level policy is a critical driver of progress, particularly in the absence of consistent federal leadership, and that clean energy momentum creates jobs and improves public health by reducing power plant emissions.
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Document type: Report
Clean Energy Momentum: Ranking State Progress
The Union of Concerned Scientists ranked U.S. states on their clean energy momentum using 12 metrics divided into technical progress, direct effects, and policy environments. California ranked first overall, followed by Vermont and Massachusetts. The analysis found that 13 percent of U.S. electricity was generated from renewable energy in 2015, and 36 percent of generating capacity being built between 2016 and 2019 is expected to be renewable. Significant reductions in power plant emissions were noted between 2011 and 2015, with sulfur dioxide, nitrogen oxides, and carbon dioxide declining by 47, 24, and 11 percent, respectively.
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Document type: Report
Resumen ejecutivo Clasificación del avance de los estados
The Union of Concerned Scientists (UCS) evaluated the 50 US states using 12 indicators to rank their progress in clean energy, focusing on renewable energy generation, energy efficiency, and transport electrification. California leads the ranking, followed by Vermont and Massachusetts. The analysis highlights that clean energy progress is tangible across the US, with wind farms in 41 states and over half a million electric vehicles on the road. The report argues that state-level leadership is critical for job creation and public health improvements, and recommends that states adopt multi-dimensional policies, facilitate corporate participation, and improve energy equity for low-income and minority communities.
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Document type: Executive summary
HERON project national workshop: Enhancing energy efficiency scenarios in Estonia
The document details a workshop organized by the Stockholm Environment Institute Tallinn Centre as part of the HERON project. It outlines proposed energy efficiency (EE) scenarios for Estonia's buildings and transport sectors, contrasting them with business-as-usual (BAU) paths. Expert panel discussions concluded that the proposed renovation rates for buildings are overly ambitious due to funding and skill shortages, while transport goals require better integration of modes and increased local government authority over cycling and public transport infrastructure.
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Document type: Report
THE ELEPHANT IN THE BOARDROOM
The paper examines the conflict between the projected growth of the global middle class and the finite capacity of Earth's natural systems. It argues that 'business growth predicated on consumption is the new elephant in the corporate boardroom,' as traditional 'take-make-waste' models risk overshooting planetary boundaries. Using cars, beef, and apparel as case studies, the authors demonstrate that incremental efficiency gains are insufficient to offset the volume of increased demand. The document recommends that companies 'do the math' on their resource dependencies, lead industry-wide conversations on consumption, and transform their core business models toward circularity and service-based value propositions to ensure long-term viability.
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Document type: Research paper
Changes to first year VED rate to tackle air pollution
ClientEarth and a coalition of organisations argue that the current VED system incentivises diesel vehicles, which contribute to illegal air pollution levels and significant health costs in the UK. They propose an additional £800 first-year VED charge on new diesel cars to fund air quality measures and accelerate the transition to ultra-low emission vehicles.
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Document type: Statement
Carbon emission mitigation by Consumption-based Accounting and Policy
The Carbon-CAP project assesses the effectiveness and feasibility of consumption-based carbon accounting (CBCA) and demand-side policies to address emissions embodied in trade. By analyzing sectors such as food, buildings, and transport, the report identifies a suite of promising policy instruments—ranging from regulatory standards to carbon-intensive material charges—that could potentially reduce the EU's carbon footprint by up to 48% theoretically, or 4-10% when accounting for realistic behavioral responses by 2050. The study emphasizes that while production-based policies are standard, CBCA provides a critical macro-level indicator of an economy's carbon intensity and the responsibility of consuming nations for global emissions.
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Document type: Report
Jobs in Renewable Energy and Energy Efficiency
The document provides a detailed breakdown of 'green jobs' in the US and internationally, contrasting clean energy employment with fossil fuel industry figures and detailing specific subsectors such as solar, wind, and energy efficiency.
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Document type: Fact sheet
Applying Hope in Today’s Tumultuous Times
The statement advocates for a pragmatic, hope-driven approach to the energy transition, asserting that the shift toward low-carbon energy is now globally supported and commercially viable, making it largely irreversible regardless of U.S. political shifts.
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Document type: Statement
Jobs in Renewable Energy and Energy Efficiency
The document provides a detailed breakdown of jobs in clean energy, contrasting them with fossil fuel employment in the U.S. and highlighting global leaders like China and Brazil. It details specific employment numbers for solar, wind, biomass, and energy efficiency subsectors, while noting the methodological challenges in comparing data from different sources.
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Document type: Fact sheet
Fueling a Clean Transportation Future
The report analyzes the climate impact of electric vehicles (EVs) based on the electricity sources used for charging across different U.S. regions. It finds that while EVs generally produce fewer emissions than gasoline cars, their full potential depends on decarbonizing the power grid by shifting from coal and natural gas to renewable energy. The document also highlights the inherent efficiency of electric drive and the synergistic potential between EVs and renewable energy integration.
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Document type: Report
Fueling a Clean Transportation Future
The report examines the lifecycle emissions of major transportation fuels, finding that while electricity and biofuels are becoming cleaner, oil is becoming more polluting due to the shift toward unconventional sources like tar sands and fracking. It advocates for the 'Half the Oil' plan to reduce U.S. oil use by 50% by 2035 and calls for greater corporate accountability, transparency in emissions reporting, and a shift toward renewable electricity and non-food biofuels.
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Document type: Report
Eight Areas of Electricity Innovation to Watch in 2017
The document outlines eight key areas for electricity innovation in 2017, focusing heavily on the integration, valuation, and management of distributed energy resources (DERs). It highlights the shift toward technology-agnostic DER valuation, the potential for electric vehicles to serve as grid assets, and the need for alternative capital planning to displace traditional infrastructure. The text also addresses the necessity of evolving utility business models, establishing distribution system operators (DSOs), improving customer engagement, and expanding DER access to low- and moderate-income customers.
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Document type: Briefing
Self-Driving Cars 101
The document provides an overview of autonomous vehicle (AV) technology and its potential societal impacts. It highlights risks including increased vehicle miles traveled, potential for increased climate emissions if gasoline-powered, and algorithmic biases in detecting people of color and children. To address these, the Union of Concerned Scientists proposes seven guiding principles focusing on safety, clean vehicles, integrated transit, improved access, just transition for workers, public accountability, and livable communities.
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Document type: Fact sheet