Search Climate Insights Directory

The City of Ithaca collaborated with Cornell University and RMI to model 5,468 buildings using a combination of the Urban Building Energy Model (UBEM) and the Green Upgrade Calculator (GUC). The analysis found that combining air-source heat pumps with envelope improvements and rooftop solar significantly reduces operating costs and electricity demand. The study identifies residential homes in low-income communities and certain downtown commercial buildings as high-priority targets for cost-effective decarbonization.

The document examines the prevalence of perfluoroalkyl and polyfluoroalkyl substances (PFAS), known as "forever chemicals," in the U.S. environment and population. It details the health risks, including cancer and immune suppression, and outlines the regulatory response led by the EPA's 2021 Strategic Roadmap and the 2024 National Primary Drinking Water Regulation. The brief also covers state-level phase-outs, legislative efforts in the 118th Congress, and technical challenges in remediating PFAS from water and soil.

The policy brief argues that the G20's Common Framework for Debt Treatments (CF) is operationally deficient, leading to protracted restructuring processes for low-income countries. It recommends that the South African G20 presidency prioritize the suspension of debt service payments upon CF requests, the expansion of climate-resilient debt clauses (CRDCs) to all low- and middle-income countries, and the creation of G20 working groups to explore market-based solutions—such as a modern 'Brady Plan'—and statutory reforms to ensure private sector participation in debt workouts.

The Inflation Reduction Act (IRA) has driven significant clean energy investment and job growth in the US, particularly in Republican-led areas, despite political efforts to repeal it and general public unfamiliarity with the law's specific provisions.

The document supports the SEC's climate-related disclosure rule, specifically the requirements for companies to report the use of carbon offsets when they are a material part of achieving climate goals. It argues that because the voluntary carbon market lacks standardization and is often flooded with low-quality credits, investors need project-level transparency to assess a company's actual risk exposure. The brief highlights that reliance on flawed offsets can lead to 'greenwashing' litigation and financial instability as demand shifts toward more expensive, high-integrity credits.

The report argues that private equity firms are compromising the 'just transition' to a green economy by utilizing temporary staffing models that lower job quality, wages, and safety. It highlights specific cases, such as Blackstone-owned Tradesmen International and American Securities-owned Solv Energy, to illustrate a pattern of OSHA violations, wage theft, and unfair labor practices. The document concludes that implementing portfolio-wide labor standards and increasing unionization are essential to protect workers and mitigate investment risks.

The report argues that poor ballot design and inaccessible education materials lead to higher rates of uncounted votes, particularly among marginalized populations. It provides specific guidelines for election officials to reduce overvotes and undervotes through better layout, plain language, and accessibility features for voters with limited English proficiency and disabilities.

The US electric school bus (ESB) market is expanding rapidly, with 12,167 commitments across 1,514 districts as of June 2024. While upfront costs remain three to four times higher than diesel buses, federal programs like the EPA's Clean School Bus Program and the Inflation Reduction Act provide significant subsidies. The market now offers 26 models across Types A, C, and D, with nameplate ranges between 100 and 300 miles. The transition involves complex integration of high-voltage vehicle systems, charging hardware (Level 2 and Level 3 DCFC), and charge management software to optimize costs and grid impact. Emerging solutions like repowering existing diesel buses offer a lower-cost alternative, typically ranging from $110,000 to $180,000.

The briefing establishes that fossil fuels are responsible for approximately 70% of carbon dioxide emissions since the industrial revolution, with a small number of companies contributing a disproportionate share. It highlights the role of attribution science in linking specific extreme weather events to climate change and details the growing trend of using the 'polluter pays' principle in litigation and legislation to hold these companies financially accountable. The document further argues that to meet the 1.5C target, global fossil fuel production must decrease significantly by 2030, supported by a transition to renewable energy and electric vehicles.

As of June 2024, the U.S. has 12,164 committed electric school buses, with 67% funded by the EPA's Clean School Bus Program. Adoption is widespread across 49 states, with California leading in total numbers, while the Southeast has seen significant recent growth. The report finds that deployment is increasingly equitable, with a majority of buses now located in high-poverty districts and areas with high air pollution, though adult asthma rates show a more even distribution.

The research note advocates for "strong 45V rules" based on three pillars: incremental, deliverable, and hourly-matched clean electricity. The author contends that weakening these rules would allow dirty hydrogen production to qualify for subsidies, potentially increasing net CO2 emissions by 100-200 MMT per year and raising wholesale electricity prices by 10%. Conversely, strong rules are presented as a way to drive domestic manufacturing of flexible electrolyzers, align U.S. standards with the European Union, and ensure the long-term viability of the hydrogen industry beyond the tax credit's expiration.

The report identifies significant vulnerabilities in American Securities' investment strategy, citing multiple bankruptcies and distressed exits such as Air Methods and Longview Power. It highlights 'headline risk' and legal challenges facing portfolio companies like ViaPath (prison telecommunications) and Amentum (defense contracting), including allegations of predatory pricing and human trafficking. Additionally, the document details regulatory risks, such as a $13 million antitrust settlement for General Chemical and multiple deceptive practice settlements for Aspen Dental. Finally, it notes ESG risks in healthcare and education, where companies like North American Partners in Anesthesia and FullBloom have faced lawsuits and investigations over understaffing and failure to provide credentialed teachers.

The document argues that traditional cost-of-service regulation (COSR) creates perverse incentives—such as 'gold plating' and 'capex bias'—that hinder the affordable deployment of clean energy and demand-side management. It proposes a transition toward Performance-Based Regulation (PBR), which compensates utilities based on target outcomes rather than costs. The guide details a 'Four Pillars Model' for comprehensive PBR: incentivizing cost-efficiency, removing the throughput incentive, equalizing capex and opex incentives, and incentivizing targeted outcomes. Key tools discussed include revenue decoupling, multi-year rate plans (MYRPs), and performance incentive mechanisms (PIMs). The text contrasts incremental PBR, which layers tools onto COSR, with comprehensive PBR, which fundamentally restructures the regulatory framework, citing Hawaii's 2020 framework as a comprehensive example.

The paper identifies systemic barriers in US school transportation, such as unreliable wheelchair lifts and the segregation of disabled students into separate buses. It argues that the transition to electric school buses (ESBs) presents an opportunity to improve health and equity, particularly for students of color in underresourced areas, provided that disabled youth are included in decision-making and universal design is adopted. The authors highlight the 'early adopter tax' and the risk of 'echo exposure'—where old diesel buses are transferred to other vulnerable community settings—and recommend that policymakers prioritize funding for accessible ESBs and enforce compliance with the ADA and IDEA.

The paper examines the barriers faced by students with disabilities during the transition to electric school buses in the US. It highlights systemic failures in current transportation, such as broken wheelchair lifts and the segregation of disabled students onto separate buses. The authors argue for the application of Disability Justice and Environmental Justice frameworks to ensure that the transition prioritizes marginalized communities and incorporates Universal Design. Key recommendations include involving disabled youth in decision-making, improving infrastructure like sidewalks, and ensuring that electric buses are more accessible than the gas-powered vehicles they replace.

The Center for International Environmental Law examines the "Insuring Our Future Act" (Assembly Bill A9905A/Senate Bill S9435) in New York. The bill targets the contradiction of insurance companies raising premiums due to climate-driven disasters while continuing to finance the fossil fuel industry. It proposes a five-year phase-out of fossil fuel investments and underwriting, alongside protections against "bluelining" and sudden non-renewals for policyholders.

In May 2024, the USDA and HUD updated minimum energy standards for new construction, requiring buildings under four stories to meet the 2021 IECC and taller buildings to meet ASHRAE/ANSI Standard 90.1-2019. The report argues that these standards, combined with 45L tax credits from the Inflation Reduction Act, make high-performance certifications like ENERGY STAR and Zero-Energy Ready Home (ZERH) financially attractive, particularly for all-electric construction in specific climate zones.

From June 18-20, 2024, a major to extreme heat event is forecast for the eastern half of the U.S., affecting over 25 million people. The event is characterized by record-level high temperatures in major cities and elevated nighttime temperatures. Climate Central's Climate Shift Index (CSI) indicates that human-caused climate change has made this heat at least four times more likely in several states, including West Virginia, Ohio, and Indiana.

The ElectrifyNY coalition expresses disappointment that the New York State Assembly failed to pass the Green Transit, Green Jobs bill and the Clean Deliveries Act, despite the latter passing the Senate. The coalition argues these failures hinder the state's ability to meet climate mandates and protect disadvantaged communities from air pollution. Additionally, the coalition raises concerns regarding bill S9292A/A9238A, which reduces the amortization period for zero-emission school buses from 12 to 8 years, suggesting the change may not account for the varying needs of school districts.

The briefing proposes "clean repowering" as a strategy to overcome the US grid interconnection backlog, which currently sees over 2 TW of clean energy projects delayed. By utilizing existing interconnection points through surplus interconnection or generator replacement processes, the time to reach commercial operation can be reduced from an average of five years to less than one year. RMI analysis suggests this could deploy 250 GW of new clean energy, saving regulated utilities $46 billion over 30 years and reducing US carbon emissions by 25 percent relative to business as usual through 2035. The document highlights Xcel Energy's Sherco project in Minnesota as a model for this transition, combining solar, storage, and workforce retention.