Search Climate Insights Directory

The document details the early application of EPA greenhouse gas (GHG) regulations for stationary sources, focusing on the role of state regulators in issuing pre-construction permits. It describes the Best Available Control Technology (BACT) analysis process, the EPA's case-by-case guidance, and the specific three-year deferral of CO2 permitting for biogenic sources. Case studies from Louisiana, Utah, and Michigan illustrate varying levels of state compliance and interpretation of EPA guidelines, while noting ongoing legal and legislative challenges to the EPA's authority.

The report examines the growth of local and regional food systems in the U.S., highlighting their potential to create tens of thousands of jobs and improve public health and environmental sustainability. It identifies barriers to scaling these systems, such as inadequate infrastructure and safety nets, and recommends increased federal funding and research to support small-scale farmers and low-income consumers.

The report analyzes the potential for the Midwest to transition to a clean energy economy by adopting the Midwestern Governors Association's (MGA) targets: reducing electricity use by 2% annually and sourcing 30% of electricity from renewables by 2030. Using a modified National Energy Modeling System (NEMS), the Union of Concerned Scientists finds that these goals are achievable and would lead to significant job creation, consumer savings, and carbon emission reductions. The analysis highlights wind and biopower as the most competitive resources, while noting that transmission capacity remains a primary barrier. The report argues that regional targets would complement a federal carbon policy, making such a policy more affordable for consumers.

The report argues that transitioning the Midwest to a clean energy economy through renewable electricity and energy efficiency standards would create 85,700 net new jobs, save consumers $42.8 billion on energy bills, and significantly reduce CO2 emissions by 2030.

The report documents the presence of hexavalent chromium, a known carcinogen, in leachate from coal ash disposal sites and groundwater across the United States. It highlights a discrepancy between the EPA's recognition of the chemical's toxicity in drinking water and its failure to account for ingestion risks in its coal ash risk assessments. The document provides evidence from EPA, DOE, and EPRI studies showing that chromium leaching from coal ash is nearly 100% hexavalent and often exceeds safety standards by thousands of times. It concludes that the EPA must designate coal ash as a hazardous waste under the Resource Conservation and Recovery Act to protect public health.

The document presents data on the freshwater requirements of U.S. power plants, highlighting that coal and nuclear power are the primary consumers of freshwater for cooling. It details the distribution of cooling systems across the U.S. and identifies specific watersheds where power plant water use significantly impacts the Water Stress Index (WaSSI).

The document examines the technology and global status of offshore wind energy, noting that while Europe leads in operational capacity, the United States has significant untapped potential. It details the technical requirements for different water depths, the regulatory frameworks in countries like Denmark, and the specific siting and permitting complexities in the U.S. The text also addresses public concerns regarding tourism, wildlife, and military radar, while highlighting the economic benefits in terms of job creation and greenhouse gas reduction.

The document argues that implementing fuel-efficiency standards and technologies for medium- and heavy-duty trucks in the U.S. would generate significant job growth, increase GDP, and reduce greenhouse gas emissions. It highlights that while these vehicles represent only 4% of U.S. highway vehicles, they consume over 20% of fuel, and that widespread adoption of efficiency technologies could save 100 billion gallons of fuel by 2030.

The report argues that improving the fuel economy of medium- and heavy-duty trucks through advanced technologies would create significant net job growth, increase GDP, and reduce global warming emissions, provided that policy interventions overcome existing market barriers.

The document argues that improving the fuel economy of medium- and heavy-duty trucks in the U.S. would create significant job growth, increase GDP, and reduce greenhouse gas emissions, provided that market barriers are overcome through performance standards and incentives.

The Union of Concerned Scientists argues that current U.S. biofuels policy is costly and ineffective, primarily supporting mature food-based industries while cellulosic biofuels remain stalled. The report proposes the 'Billion Gallon Challenge' to provide capital support for the first billion gallons of annual cellulosic capacity and a 'Biofuels Performance Tax Credit' to replace existing credits with incentives based on actual life-cycle emissions reductions.

In 2008, Michigan imported all the coal used by its power plants, resulting in an economic drain of $1.36 billion. The state's electricity generation relied on coal for over 60% of its needs, with Detroit Edison's Monroe facility identified as the most import-dependent plant. To reduce this dependence and stimulate the local economy, the document advocates for investments in energy efficiency and homegrown renewable energy, noting that Michigan has the technical potential to produce nearly twice its 2008 electricity needs from renewables, primarily wind and bioenergy.

The report documents 31 cases of environmental contamination from coal combustion waste (CCW) across 14 US states, identifying that 15 sites have off-site contamination exceeding drinking water or surface water standards, while 16 show severe on-site pollution. It highlights the presence of toxic metals such as arsenic, lead, and selenium, and argues that the lack of federal regulation for CCW disposal poses a significant risk to public health and the environment, particularly in low-income communities.

The report analyzes how carbon pricing may affect the US Midwest, a region characterized by high carbon intensity due to coal dependency and a large manufacturing base. While carbon pricing could increase short-term costs for energy-intensive industries, the report argues it presents a long-term opportunity for the region to lead in low-carbon production and 'green collar' jobs. It highlights the Midwest's significant mitigation potential and the role of the Midwestern Greenhouse Gas Accord in driving this transition.

The report projects that Michigan will face significantly hotter summers, increased flooding, and agricultural disruptions by the end of the century, particularly under a higher-emissions scenario. It highlights risks to public health from extreme heat and ozone pollution, as well as threats to the state's dairy and corn industries. To mitigate these effects, the document advocates for strengthening renewable energy standards, updating building codes, and implementing federal cap-and-trade and fuel economy policies.

The report analyzes the EPA's 2007 risk assessment, finding that unlined coal ash ponds and landfills pose severe cancer and non-cancer risks to humans and aquatic ecosystems. It specifically highlights that residents near unlined ponds mixing ash and coal refuse face a 1 in 50 cancer risk from arsenic, 2,000 times the EPA's regulatory goal. The document also notes that boron levels in surface waters can reach 2,000 times safe thresholds for aquatic life. It argues that the EPA underestimated these risks by ignoring direct surface water releases and inhalation pathways, and calls for the phase-out of ash ponds within five years and the mandatory use of composite liners for landfills.

The document details the biological and physical shifts resulting from global warming, noting that minimum temperatures are rising faster than maximum temperatures. This trend has led to earlier ice break-up, snow melt, and the advancement of biological events such as bird nesting and plant flowering, particularly in Europe and North America. These shifts create risks of ecological desynchronization, such as polar bears in Hudson Bay having less time to hunt on sea ice.

The document reports that 55 cellulosic biorefineries were complete, under construction, or planned across 31 U.S. states by July 2008, with an expected capacity of 629.5 million gallons per year. It outlines various conversion technologies and feedstocks, including agricultural residues and energy crops, and details significant financial investments from the U.S. Department of Energy and various state governments to advance the industry.

The briefing examines the European Union's Emission Trading Scheme (EU ETS), the Regional Greenhouse Gas Initiative (RGGI), the Western Climate Initiative (WCI), and the Midwestern Regional Greenhouse Gas Reduction Accord. It argues that for cap-and-trade to be effective, the emissions cap must be sufficiently tight and the distribution of allowances should favor auctioning over free allocation to avoid windfall profits for firms.

The document explains how nuclear power plants use water to absorb waste heat and cool equipment, detailing once-through and closed-cycle cooling systems. It highlights the significant volumes of water required, the environmental impact on aquatic life, and the critical role of the Ultimate Heat Sink (UHS) during accidents. The author argues that the primary safety hazard is not radioactive leakage, but rather the failure of water to reach the plant or leaking into the plant.