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The document details a 'multifront assault' by the Trump administration to roll back the 2015 EPA regulations on coal ash, a toxic byproduct of coal-fired electricity generation. It describes how six specific proposals aim to delay the closure of leaking pits, weaken wastewater standards, and eliminate financial requirements for cleanups. The briefing highlights the dangers of coal ash—including carcinogens like arsenic and hexavalent chromium—and cites historical disasters and contamination sites to illustrate the necessity of the safeguards being targeted.

Maryland generates over 1.9 million tons of coal combustion waste annually, ranking 23rd in the US. The state utilizes at least 31 landfills and minefills, as ponds are prohibited. However, the document highlights significant regulatory gaps, such as discretionary groundwater monitoring and a lack of financial assurance requirements. These deficiencies are linked to several contamination cases, including a $54 million settlement for the BBSS Gambrills site and documented groundwater pollution at the Brandywine and Faulkner facilities.

West Virginia ranks 4th in the U.S. for coal ash generation, producing over 7.2 million tons annually. The state's disposal infrastructure is characterized by aging, often unlined ponds with significant safety hazards and documented water contamination. The document argues that West Virginia's regulatory framework is deficient, failing to require basic safeguards, regular state inspections, groundwater monitoring, or financial assurances for cleanup.

The report details how coal ash, the second-largest industrial waste stream in the U.S., contains toxic heavy metals that leach into groundwater and surface water or become airborne as fugitive dust. It highlights the inadequacy of current state-level regulations and the failure of unlined disposal ponds, citing numerous 'damage cases' where communities have suffered from contaminated drinking water and ecological collapse. The authors advocate for a transition away from wet storage and unencapsulated reuse, calling for federal standards to protect susceptible populations, particularly children and low-income communities.

The document consists of a collection of 45 figures mapping the FSEIS routes for nuclear waste transport through nearly every U.S. state and the District of Columbia.

The document argues that the adoption of California's Advanced Clean Cars II (ACC II) rule by all 16 '177 States' would significantly increase electric vehicle (EV) market share, reduce greenhouse gas emissions, and provide substantial public health and economic benefits. Modeling suggests that while federal Inflation Reduction Act (IRA) tax credits provide a temporary boost to EV sales, the ACC II mandate is necessary to sustain growth, potentially leading to 81 percent EV market share by 2050. The report highlights cumulative reductions of 1,310 million metric tons of CO2e, the prevention of 5,000 premature deaths, and the creation of 300,000 new domestic jobs by 2050.

Analysis shows that the weighted average cost of coal power in the U.S. rose from $36/MWh in 2021 to $46/MWh in 2024, a 28 percent increase that outpaced inflation. This rise is attributed to higher fuel, operations, and maintenance costs, as well as declining capacity factors. Despite these economics, some U.S. federal policies and state regulators have extended the lives of expensive plants, such as Plant Bowen in Georgia and the Hunter and Huntington plants in Utah, potentially increasing the financial burden on electricity consumers.

The document argues that U.S. states should implement 'no-regrets' actions in building and industrial efficiency to counter the negative economic impacts of the One Big Beautiful Bill Act (OBBBA), which is projected to cost households $170 billion in higher energy bills and reduce GDP by $1.1 trillion by 2035. It advocates for the deployment of heat pumps and electric boilers, noting that residential heat pumps have held a 56 percent market share for space heating since 2021. The briefing specifically highlights the potential of industrial electric heat pumps for low-temperature heat (under 200 °C), which are two to four times more efficient than fossil-fueled versions but currently make up less than 2 percent of the market. To overcome barriers such as upfront capital and high electricity rates, the document recommends a suite of policy actions, including adopting modern energy codes, implementing building performance standards, providing point-of-sale rebates, and creating revolving loan funds.

The document provides a comparative analysis of labor policies from the NY State Common Retirement Fund, CalPERS, Maryland SRPS, MassPRIM, and the Illinois State Board of Investment (ISBI). It details how these investors approach the right to organize, compulsory labor, discrimination, wages, layoffs, diversity, health and safety, and working conditions within their private equity portfolios.

Private equity firms own at least 31,000 companies employing 13 million US workers, often in low-wage sectors. The document asserts that poor workforce relations and high bankruptcy risks in private equity-backed companies can lead to material financial losses, while proactive workforce management—including better wages and health and safety practices—enhances company performance and investor returns. Several US state pension funds managing over a trillion dollars have already adopted such policies to integrate labor risk assessment into manager selection and monitoring.

The document highlights the systemic labor risks associated with private equity, noting that portfolio companies employ 13 million US workers and face higher bankruptcy risks. It advocates for the adoption of Responsible Workforce Management policies by state pension funds to improve company performance and avoid operational disruptions, citing a $3.7 trillion backlog of portfolio companies and lagging returns as reasons for increased investor-led oversight.

The document describes testing conducted between August and December 2025 on a 3-ton residential split-system and a 5-ton packaged rooftop unit (RTU) to compare the effects of different R-410A refrigerant qualities. Results indicate that reclaimed refrigerant meeting AHRI 700 purity standards causes no measurable short-term performance penalty in capacity, efficiency, or power consumption compared to virgin refrigerant. Testing with recovered refrigerant and near-empty tanks showed similar stability, although recovered refrigerant quality is noted as inherently variable. Additionally, the RTU showed performance resilience down to 85% of nominal charge, likely due to the use of thermostatic expansion valves (TXVs).

The document describes a framework for calculating residential utility bills by combining NREL ResStock building load data with electric and gas tariff data from Genability and RateAcuity. It details specific adjustments made to tariffs for Xcel Energy (Minnesota), Pepco (Maryland), Central Maine Power (Maine), and Eversource Energy (Massachusetts) to ensure analytical consistency. The analysis specifically models upgrades to high-efficiency cold-climate air-to-air heat pumps and evaluates the impact of 'electrification-friendly' rate designs on customer costs.

The document outlines four plausible scenarios for the year 2010 based on federal regulatory roles and financial environments. It advocates for a 'water soft path' paradigm shift, moving from centralized, demand-driven 'gray infrastructure' toward decentralized, efficient, and integrated 'green infrastructure.' The author identifies drivers for this transition, including end-use efficiency, waterless sanitation, stormwater harvesting, and technological spill-overs from the distributed energy revolution, such as fuel cells and hybrid-electric vehicles.

The document outlines the environmental and economic benefits of cover crops, such as reducing nitrate leaching by 40 to 70 percent and increasing soil fertility. It identifies significant barriers to adoption, including direct costs (ranging from $62 to $107 per acre for certain varieties in Kansas) and risks related to crop insurance and land tenure. The Union of Concerned Scientists recommends expanding USDA cost-share incentives through the CSP and EQIP programs, reforming crop insurance, and increasing technical assistance and research.

The report provides a state-by-state breakdown of progress toward 2020 Clean Power Plan benchmarks, noting that some states have exceeded 500% of their goals while others show 0% progress. It highlights the role of energy efficiency, renewable energy standards, and regional initiatives in achieving these targets.

The document assesses the economic benefits of transitioning to a low-carbon economy in the United States, highlighting that clean energy investments create more jobs than fossil fuel spending and that renewable energy is increasingly cost-competitive. It warns that delaying climate action could result in annual GDP losses of 1-10% by 2100, while emphasizing the potential for revitalizing rural communities and boosting the domestic manufacturing sector through cleantech.

The document provides a comprehensive overview of the climate and energy landscapes in China and the United States. For China, it highlights a 4.7% increase in CO2 emissions in 2023, the growth of non-fossil fuel power capacity to 53.9% of the total, and the implementation of the 'Carbon Peak' pilot program and the restart of the CCER market. For the United States, it notes a projected 1.9% decrease in emissions for 2023, the impact of the Inflation Reduction Act (IRA) and Infrastructure Investment and Jobs Act (IIJA), and the focus on decarbonizing the power sector by 2035. The briefing also details the 'Sunnylands Statement' as a framework for bilateral cooperation on methane and energy transition, while noting tensions regarding trade policies and the potential impact of the 2024 US election.

The document outlines four types of solar metering arrangements designed to overcome the limitations of the traditional "one customer, one meter" model. Net metering provides benefits to a single customer via one meter. Virtual net metering (VNM) allows multiple customers with separate meters to share credits from a system, often in multi-tenant or municipal buildings, and is permitted in states including California, Colorado, and Massachusetts. Community solar enables joint ownership or sponsorship of systems for those unable to host arrays on-site, utilizing models such as utility-sponsored, special purpose entity, or non-profit "buy a brick" projects. Meter aggregation allows a single customer with multiple utility accounts to aggregate annual consumption across separate buildings, enabling the installation of larger systems and higher power sales back to the grid.

The Coalition to Re-Imagine School Waste, supported by a WWF Food Waste Warrior grant, established composting and food recovery pilots in Montgomery County, Maryland, and successfully lobbied for the 'Grant Program to Reduce & Compost School Waste' through large-scale postcard campaigns. The group aims to expand these sustainability efforts to 150-250 more schools in the 2023-24 school year.