Search Climate Insights Directory
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Alternative Approaches for Regulating Greenhouse Gas Emissions from Existing Power Plants under the Clean Air Act: Practical Pathways to Meaningful Reductions
The document argues that mass-based emission standards are superior to rate-based standards for regulating existing power plants because they avoid production incentives that can lead to emissions 'rebound' and conflicts with existing regional trading systems. Through economic modeling, the author compares a 'fossil budget' approach (covering all fossil units) and a 'coal budget/gas rate' approach. Both core cases are projected to reduce fossil sector carbon emissions by 26% to 27% relative to 2005 levels by 2020, primarily by displacing high-emission coal generation with existing natural gas combined cycle (NGCC) units. While the fossil budget approach provides stronger long-term price signals for zero-carbon investment, the coal budget/gas rate approach results in lower near-term emission credit prices ($20/tonne vs $34/tonne), lower wholesale price increases (6.9% vs 27.9%), and lower retail rate impacts (2.3% vs 4.1%).
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Document type: Research paper
Power Switch
The Clean Air Task Force (CATF) recommends that the EPA establish specific emission rate standards for existing fossil fuel-fired utility boilers (1,450 lbs/MWh) and natural gas combustion turbines (1,100 lbs/MWh). The proposal centers on a 'model' interstate emission credit trading rule that allows states flexibility in compliance, including the use of state-specific emission budgets. Analysis by The NorthBridge Group indicates this approach could reduce electric sector carbon dioxide emissions by 27 percent from 2005 levels by 2020, resulting in a total reduction of 636 million metric tons. The report argues that nearly 70 percent of these reductions would come from optimizing fossil dispatch. Beyond climate benefits, the proposal is estimated to avoid over 2,000 premature deaths annually due to reductions in sulfur dioxide and nitrogen oxides. The total monetized health and climate benefits are estimated at $34 billion in 2020, significantly outweighing the $9.4 billion compliance cost.
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Document type: Report
Carbon-Free Prosperity in California: Policies for Success
The briefing outlines a strategic policy framework for California to maintain its climate leadership and reach its 2050 emissions targets. It emphasizes the need for a 2030 carbon cap to provide investment certainty and recommends specific reforms: transitioning utilities to performance-based regulation, implementing energy labels for existing buildings, enhancing the Low Carbon Fuel Standard, and establishing 'gold standard' methane emissions regulations. The authors also advocate for regional cooperation with other U.S. states and technical collaboration with China to scale clean energy technologies globally.
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Document type: Briefing
Regulating Carbon Emissions in Canada
The document reports a significant decline in federal political will to regulate carbon emissions in Canada during 2013, specifically noting the delay of oil and gas regulations. In contrast, provinces took leading roles: Ontario phased out coal-fired electricity, Quebec launched a cap-and-trade system linked to California, and British Columbia maintained its carbon tax. The brief highlights the 'Keystone effect,' where U.S. market access for the Keystone XL pipeline became linked to Canada's GHG performance. It concludes that federal 'equivalency' agreements—intended to align provincial and federal standards—have stalled due to complexity and lack of political will, recommending that Canada embrace a bottom-up approach to subnational policy alignment.
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Document type: Policy brief
WRI Response to the 2014 State of the Union Address
The World Resources Institute (WRI) endorses President Obama's commitment to enact new emissions standards for existing power plants as part of the Climate Action Plan. WRI argues that such standards can drive innovation and economic opportunity, noting that the average U.S. coal plant is nearly 40 years old. The statement emphasizes that U.S. domestic leadership is essential to meeting its international commitment to reduce emissions by 17% below 2005 levels by 2020 and to securing a universal climate agreement in Paris in 2015.
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Document type: Statement
Potential Impacts of Climate Warming on Water Supply Reliability in the Tuolumne and Merced River Basins, California
The study uses the Water Evaluation and Planning (WEAP) platform to model the Tuolumne and Merced River Basins, finding that temperature increases of 2°C to 6°C shift hydrology timing earlier by 5–21 days and increase agricultural water demands by up to 5.8%, leading to a decrease in surface water reliability for agriculture from 0.84–0.90 to 0.75–0.79 under the 6°C scenario.
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Document type: Research paper
Raising the Stakes for Energy Efficiency: California’s Risk/Reward Incentive Mechanism
The report assesses the Risk/Reward Incentive Mechanism (RRIM) implemented by the California Public Utilities Commission (CPUC) in 2007. While the RRIM increased senior management's attention toward energy efficiency and drove the expansion of cost-effective programs like lighting, it struggled to protect ratepayers due to the abandonment of the 'true-up' process. The mechanism's design—characterized by sharp earnings 'cliffs' and retroactive implementation—led to significant regulatory conflict and unpredictable earnings, which limited its value to shareholders. The report concludes that while the RRIM was a valuable experiment, future incentives should be implemented before program design, avoid sharp payment distinctions, and be designed for predictability and repeatability.
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Document type: Report
STATE GREEN BANKS FOR CLEAN ENERGY
The document analyzes state green banks as quasi-governmental financial institutions designed to leverage public funds to increase private investment in clean energy and energy efficiency. It details the operational model of Connecticut's CEFIA, highlighting its use of credit enhancements and diverse financing tools to bridge the 'deployment gap' for commercially available technologies. The paper also reviews emerging green bank models in New York, Vermont, and Hawaii, while discussing the systemic benefits and drawbacks of state-level financing authorities.
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Document type: Research paper
STEPPING UP: BENEFITS AND COST OF ACCELERATING FORT COLLINS' ENERGY AND CLIMATE GOALS
The report proposes an 'accelerated scenario' for Fort Collins to reach an 80% reduction in CO2 emissions by 2030, twenty years ahead of its original 2050 target. This path involves reducing building energy use by 31%, achieving a carbon-neutral electricity system, and reducing transportation energy use by 48%. The analysis indicates that while this requires higher upfront capital, it would result in a net present value benefit of $260 million by 2030 and $2.0 billion by 2050 compared to business-as-usual. Key strategies include the deployment of distributed solar PV, increased wind capacity, smart growth urban planning, and the adoption of electric vehicles.
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Document type: Report
Can carbon revenues help transform household energy markets?
The document analyzes 75 carbon-financed cookstove projects in India and Kenya, finding that while carbon revenues often fund price subsidies and after-sales support, many developers rely on them exclusively, creating financial risk. It suggests that carbon finance is most effective as 'transitional crediting' to stimulate early demand and that the monitoring requirements of carbon markets can actually improve long-term stove uptake.
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Document type: Policy brief
Reducing climate risk: climate finance and carbon markets
The document outlines SEI's research on climate finance and carbon markets, arguing that adaptation finance priorities are political rather than scientific, and that private sector finance is unlikely to meet the primary needs of the poor and vulnerable. It also evaluates the Clean Development Mechanism (CDM), suggesting that excluding problematic project types, such as coal power, would improve carbon market efficiency.
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Document type: Briefing
Rethinking development: sustainable consumption, production and trade
The Stockholm Environment Institute (SEI) develops consumption-based accounting tools, such as multi-regional input-output (MRIO) models, to reveal environmental costs often ignored by territory-based emissions tracking. SEI argues that while consumers play a role, systemic shifts driven by government and business are essential to overcome infrastructure and business models that lock in unsustainable patterns. Their research also highlights how complex global supply chains can transfer vulnerabilities and environmental risks between producer and consumer regions.
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Document type: Briefing
Cross-sectoral integration in the Sustainable Development Goals: a nexus approach
The document proposes a 'nexus approach' to move away from sectoral 'silos' in the development of Sustainable Development Goals (SDGs). By focusing on the interdependencies between water, energy, and food, the authors suggest that a bottom-up process starting with concrete targets—rather than overarching goals—can better identify trade-offs and synergies. The brief illustrates this through three analytical approaches: screening for interactions, exploring the nature of those interactions (interdependencies, constraints, and reinforcements), and mapping 'nexus targets' that serve multiple sectors. Case studies from Ethiopia, China (Ningxia), and the United States (California) demonstrate how these cross-sectoral tensions manifest in real-world resource management.
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Document type: Briefing
Managing environmental systems: the water-energy-food nexus
The document outlines SEI's interdisciplinary approach to the water-energy-food nexus, emphasizing the need to integrate cross-sectoral interactions, ecosystem services, and multi-scale governance. It highlights the use of analytical tools like WEAP and LEAP to identify synergies and trade-offs in resource management. SEI advocates for participatory processes and the identification of policy 'entry points' to ensure scientific research translates into practical, sustainable solutions for resource scarcity.
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Document type: Briefing
Leading from the Middle
The report details how Illinois municipalities use Community Choice Aggregation (CCA) to pool electricity purchasing power, enabling them to negotiate lower rates and switch to cleaner energy sources. Since 2013, over 90 Illinois towns have transitioned to 100% renewable electricity via Renewable Energy Credits (RECs), increasing demand for wind and solar by over 6 terawatt hours. The document provides case studies from Oak Park and Chicago, analyzes CCA adoption in other states like California and Massachusetts, and offers strategic recommendations for municipalities to move beyond RECs toward local renewable energy investments.
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Document type: Report
Millions of People Could Use Electric Vehicles
A 2013 survey by the Union of Concerned Scientists and Consumers Union found that 42% of U.S. households meet the basic requirements to use today's electric vehicles, compared to less than 1% who owned one at the time. Specifically, 42% were eligible for PHEVs and 25% for BEVs. The report suggests that widespread adoption could halve projected U.S. oil use and reduce global warming pollution.
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Document type: Fact sheet
Designing Greenhouse Gas Reporting Systems: Learning from Existing Programs
The document outlines the foundational elements and strategic considerations for jurisdictions designing mandatory GHG reporting systems. It emphasizes that while design must be context-specific, success depends on a sound legal basis, stakeholder engagement, and sufficient institutional capacity. The paper advocates for a phased approach in developing countries and highlights how these programs can inform mitigation policies and track progress toward national targets by leveraging corporate emissions data.
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Document type: Research paper
Defending Tahoe National Forest
Conservation groups represented by Earthjustice intervened in a federal lawsuit to support a 2010 U.S. Forest Service plan for the Tahoe National Forest. The plan limits off-highway vehicles (OHVs) to approximately 2,000 miles of roads, 385 miles of trails, and 244 acres of play areas to prevent environmental damage and protect drinking water sources for millions of Californians.
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Document type: Case study
How do hybrid cars and trucks work
The document describes how hybrid vehicles combine internal combustion engines with electric motors and batteries to improve fuel efficiency and reduce pollution. It details specific features such as idle-off, regenerative braking, power assist, and electric-only drive, while contrasting plug-in hybrids with battery electric and hydrogen fuel cell vehicles.
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Document type: Guide
Remarks to the Canadian-American Business Council
The document discusses the shift toward regulatory-based climate policies in both Canada and the U.S., emphasizing the need for 'equivalency' in measuring carbon reductions across different provincial and state systems. It analyzes the economic impact of proposed Canadian oil and gas regulations, noting that a 40/40 target (40% reduction with a $40 price ceiling) would cost significantly more than a 20/20 target. Finally, it suggests Canada is unlikely to meet its 17% emissions reduction target for 2020 due to delayed oil and gas regulations and increasing energy sector emissions.
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Document type: Statement