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The 2015 update to the Massachusetts Clean Energy and Climate Plan for 2020 (CECP Update) outlines a comprehensive strategy to reduce greenhouse gas (GHG) emissions by at least 25% below 1990 levels by 2020. The plan identifies key drivers for these reductions, most notably vehicle GHG emission standards and the import of clean electricity. It also provides a framework for long-term goals, aiming for an 80% reduction by 2050 through a strategy of reducing energy consumption, decarbonizing the electricity supply, and electrifying transportation and heating. The report includes detailed assessments of building efficiency, transportation, electricity generation, and non-energy emissions, as well as research on land use and carbon storage in terrestrial and wetland ecosystems.

A joint letter from the Attorneys General of New York, Delaware, Maryland, Massachusetts, Oregon, Rhode Island, and Vermont requests that the EPA establish methane emission standards for the distribution sector. The states argue that excluding this sector undermines the climate benefits of the Clean Power Plan and cite an EPA Inspector General's report stating that voluntary industry efforts have failed and that distribution leaks cost consumers approximately $192 million in 2011.

A joint statement from the Attorneys General of New York, Delaware, Maryland, Massachusetts, Oregon, Rhode Island, and Vermont urging the Environmental Protection Agency (EPA) to establish formal emission standards and guidelines for methane in the oil and gas sector following the publication of five technical white papers.

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.

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.

The report examines the vulnerability of the U.S. power sector to water constraints and climate change, comparing a 'business as usual' pathway with low-carbon alternatives. It finds that a combination of renewable energy and energy efficiency can drastically reduce water withdrawals and consumption while lowering consumer costs and mitigating climate impacts.

The report identifies heating oil as a significant economic and environmental drain on the Northeast U.S., costing the region over $14 billion annually. It compares natural gas and heat pumps as alternatives, concluding that heat pumps offer superior long-term economic savings and emissions reductions, particularly when paired with a renewable grid. The author identifies high upfront costs, lack of technical knowledge, and retrofit difficulties as primary barriers and suggests incentives, third-party financing, and leasing as solutions to scale the market.

The document describes the 'energy-water collision,' a phenomenon where power plants—particularly conventional fossil-fuel and nuclear facilities—struggle to secure sufficient or cool enough water for cooling processes during heat waves and droughts. It identifies three primary types of collisions: insufficient water levels, incoming water that is too warm to cool plants, and outgoing water that exceeds temperature limits for environmental safety. The text highlights a surge in these incidents during the summer of 2012, noting that even plants on large bodies of water, such as the Millstone nuclear plant on Long Island Sound, are now susceptible to temperature-related shutdowns.

The report identifies a critical gap between climate science outputs and the operational needs of transportation practitioners. It argues that adaptation requires not only improved climate data—such as updated precipitation atlases and sea-level rise projections—but also a deep understanding of local non-climate factors like infrastructure elevation and soil saturation. The document emphasizes the need for a 'central clearinghouse' of information, better 'Climate-to-English' translation of scientific terms, and the integration of climate risk into existing asset management and budgeting processes. It highlights various pilot projects and tools, including the FHWA Risk Assessment Model and Toronto's Climate Change Risk Assessment Tool, as pathways toward increasing the adaptive capacity of transportation systems.

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 Union of Concerned Scientists reports that the NRC has inconsistently enforced safety regulations for radioactive releases, allowing numerous accidental leaks to occur without sanction. While the NRC previously issued sanctions for monitoring and control failures, the report claims the agency has tolerated 27 accidental releases over a four-year period with impunity, effectively breaching its safety contract with the public.

The paper analyzes the drivers of per capita CO2 emissions across U.S. states, noting a wide range from 76.5 mT in Alaska to 12.2 mT in Vermont. It identifies that high transportation emissions are linked to sparse populations, low gasoline prices, and limited public transit. High residential heating emissions are associated with cold climates, high average incomes, and the use of oil for heating. Additionally, high residential electricity emissions are driven by coal-based power generation, hot and humid climates, and low electricity prices. The authors highlight gasoline prices, electricity prices, and public transportation use as key policy variables.

The clean car standards, initiated by California's AB 1493 and adopted by the California Air Resources Board (CARB), comprise regulations for air quality, global warming, and zero-emission vehicles. These standards aim for a 30% reduction in global warming pollution from new vehicles by 2016 and are more stringent than federal Corporate Average Fuel Economy (CAFE) standards, targeting a fleet average fuel economy equivalent of 39.2 mpg by 2020 compared to the federal 35 mpg. As of January 2009, 13 states and the District of Columbia had adopted these standards, which are projected to reduce cumulative global warming emissions by 451 million metric tons of CO2E by 2020 across those 15 jurisdictions.

The report argues that RGGI's design, which caps emissions only for power plants within participating states, creates a price advantage for imported electricity from coal-heavy states like West Virginia and Pennsylvania. This 'leakage' is exacerbated by excess capacity in existing coal plants and planned transmission upgrades that facilitate power flow from west to east. The authors suggest that RGGI states should implement retail-level carbon caps, prohibit contracts with high-emission plants, and prioritize transmission projects aligned with climate goals to prevent the expansion of coal-based power.

Friends of the Earth welcomes the Supreme Court's decision to review a 2003 EPA ruling that denied the agency's authority to regulate carbon dioxide as a pollutant. The organization argues that the lack of regulation has coincided with a 16 percent increase in global warming emissions since 1990 and contributed to severe weather events and economic losses, such as the $57.6 billion in insurance losses from 2005 hurricanes.

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.

The document outlines the advantages of wind energy for New England, focusing on reducing dependence on imported fossil fuels, stabilizing energy costs, and generating local economic growth through taxes, lease payments, and jobs. It highlights specific projects in Massachusetts and Vermont to demonstrate positive community impact and environmental gains.

The document outlines the potential for wind energy in New England, emphasizing that the region has "excellent wind resources, particularly on mountain ridges and along the coast." It details the criteria for optimal siting—primarily wind speed, topography, and proximity to transmission lines—and highlights economic benefits such as tax revenues for towns and lease payments for landowners. The text addresses environmental concerns, noting that modern turbines cause significantly fewer bird fatalities than other human structures and that wind power does not reduce property values. It also discusses human impacts, including visual aesthetics, noise, and aviation lighting, while noting that 81 percent of surveyed Vermont residents find turbines "beautiful or acceptable."

The document outlines the environmental and economic benefits of wind energy in New England, noting that over 60 percent of the region's electricity was generated from fossil fuels in 2005. It explains how wind power integrates into the grid via ISO New England to displace more expensive and polluting plants, particularly oil-fired plants during winter peaks. The text highlights that 18 proposed wind projects with a total capacity of 1,890 MW could avoid millions of tons of pollution annually, including over 3 million tons of CO2. It also discusses the importance of siting for efficiency and the role of policy mechanisms like cap-and-trade and renewable portfolio standards in accelerating the transition.

The document outlines Dr. James E. Hansen's testimony on climate change, highlighting that the United States is the largest source of CO2 emissions and that current 'Business-as-Usual' trends could lead to at least 5°C of warming by 2100. It warns of non-linear ice sheet disintegration in Greenland and West Antarctica, potentially causing sea level rises of 25±10 meters if warming reaches 2-3°C. Hansen argues that abrupt climate changes are practically certain under current emission trends, but an 'Alternative Scenario' could keep warming below 1°C if CO2 emissions are moderately reduced by mid-century and peak by 2100.