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The Union of Concerned Scientists (UCS) submitted a public statement to the EPA supporting the Clean Power Plan (CPP) while advocating for a mass-based emissions trading approach for states subject to a federal implementation plan. UCS argues that a mass-based system provides greater certainty for achieving emissions budgets and better integration with future carbon markets. The document provides detailed recommendations for both rate-based and mass-based models, including the expansion of eligible zero-emission resources to include distributed generation and energy efficiency. It also proposes modifications to the Clean Energy Incentive Program (CEIP) to broaden project eligibility timelines and ensure benefits reach low-income communities. Additionally, UCS emphasizes the need to protect voluntary renewable energy markets and suggests implementing interim compliance provisions to prevent emissions deficits.

The RMI Community Energy Resource Guide offers a structured process for local governments to transition to clean energy. It outlines a 6-to-12-month planning cycle involving stakeholder collaboration, data baselining, and the selection of sector-specific tactics. The guide details strategies across four primary domains: buildings, electricity supply, transportation, and industry, while emphasizing the role of 'broad enablers' like Green Banks and updated utility regulatory models to scale implementation.

The briefing challenges the notion that variable renewables will limit their own growth by depressing wholesale electricity prices. It contends that these concerns rely on static models of the grid and ignore the synergistic effects of complementary supply resources, flexible demand-side responses, and the decreasing cost of storage. By shifting from incremental to whole-system thinking and updating 20th-century market designs, the author asserts that wind and solar can continue to expand without facing practical economic limits.

Fuel cells generate electricity through a chemical reaction between oxygen and hydrogen, offering a high-efficiency, low-emission alternative to combustion engines and batteries. While they excel in reliability, scalability, and energy density, widespread adoption is hindered by high costs—particularly the need for platinum in PEM cells—and the lack of hydrogen fueling infrastructure. Applications range from portable electronics and stationary power (including combined heat and power systems) to transportation. In the U.S., the Department of Energy and various state-level policies, such as Renewable Portfolio Standards and tax credits, are working to reduce system costs and expand infrastructure to make fuel cells more competitive with gasoline-powered vehicles.

The document argues that urban GHG mitigation is most effective when governments at different levels operate according to their comparative advantages. It categorizes city roles into policy leaders, critical implementers, and strategic partners, mapping these roles to specific abatement potentials in transport, buildings, and waste. The authors emphasize that national governments must provide enabling actions—specifically financial support, technical capacity, and policy alignment—to unlock this potential. Case studies of China, the United States, and Brazil illustrate varying degrees of vertical integration and identify specific national-level gaps that hinder city-scale climate action.

The guidelines establish a 'first green, then smart' approach, where smart technologies are used to optimize the outcomes of sustainable urban design. The framework covers six smart categories: telecommunications, mobility, governance, energy management, safety, and public services, supported by global case studies to demonstrate economic and environmental viability.

The report analyzes how battery energy storage can provide thirteen different services across three grid levels: transmission, distribution, and behind-the-meter. It argues that while single-use batteries are often underutilized and economically unviable, 'stacking' multiple services—such as combining demand charge reduction with wholesale grid services—can make storage a cash-positive investment. Through four U.S. case studies, the report demonstrates that behind-the-meter systems are technically capable of providing the widest array of services, though significant regulatory barriers currently hinder this potential.

The report finds that significant portions of the U.S. East and Gulf Coast electricity grids are exposed to coastal flooding, with the Delaware Valley specifically facing risks to 79 substations and 35 power plants under current Category 3 hurricane conditions. It warns that reliance on historical flood data underestimates future risks as sea levels rise, potentially leading to widespread, long-lasting power outages. To address this, the authors recommend a combination of infrastructure adaptation (protection, accommodation, and retreat) and the deployment of decentralized clean energy technologies—such as solar with storage, combined heat and power (CHP) plants, and microgrids—to ensure critical facilities remain powered during grid failures while reducing the carbon emissions that drive sea level rise.

The report examines how rising sea levels and storm surges threaten critical electricity infrastructure, such as substations and power plants, in five major U.S. coastal regions. It finds that significant portions of the grid are already exposed to flooding, which can lead to widespread and prolonged power outages. The authors argue that current planning relies on outdated historical data and recommend a shift toward decentralized, resilient clean energy systems—including microgrids, energy storage, and combined heat and power plants—alongside infrastructure adaptation strategies like protection, accommodation, and retreat.

The Union of Concerned Scientists finds that significant electricity infrastructure along the U.S. East and Gulf Coasts is currently exposed to storm surge, a risk that will increase with sea level rise. In the South Carolina Lowcountry, 54 major substations and seven power plants are currently at risk. The report advocates for adaptation strategies—protection, accommodation, and retreat—and the deployment of decentralized clean energy technologies like microgrids and energy storage to ensure community resilience and reduce carbon emissions.

The Union of Concerned Scientists finds that significant portions of the U.S. East and Gulf Coast electricity grids are exposed to storm surge, a risk that will increase as sea levels rise. In southeastern Florida, the number of major substations at risk from a Category 3 storm is projected to triple by 2070. The report advocates for a shift from centralized grids to decentralized, resilient power systems—such as microgrids and renewable energy with storage—to protect critical facilities and reduce carbon emissions.

Rooftop solar in the United States experienced rapid growth between 2008 and 2014, driven by a 45% decrease in household system prices from 2010 to 2014 and the rise of third-party ownership models. The technology provides significant environmental benefits, including zero carbon emissions and minimal water use during electricity generation, while supporting a domestic industry that employed over 170,000 people by 2014. Growth is further sustained by federal and state policies such as net metering, feed-in tariffs, and a 30% federal investment tax credit.

The document describes the physics of solar photovoltaic (PV) cells, which use doped silicon layers to create an electric field that converts sunlight into electricity. It details three main cell types—single-crystal, polycrystalline, and thin film—and discusses the benefits and challenges of integrating both rooftop and large-scale solar systems into the electricity grid, including issues of variability and transmission.

The paper examines how different DER ownership models can be used to integrate cost-effective technologies into outdated regulatory frameworks. It argues that no single model is universal, but each can work if the value proposition aligns with the public interest and utilizes an adaptive approach prioritizing fair compensation and transparency. Utility-owned models are effective for early adoption and public goals but risk cost overruns and market power issues. Third-party and customer-owned models excel when they have transparent access to the full value of DERs through dynamic rate design or competitive markets.

The report argues that demand flexibility—the use of technology to shift electricity use across hours of the day—can significantly lower both customer bills and grid investment costs. In the U.S. residential sector, it could avoid $13 billion annually in grid and energy costs while reducing customer bills by 10–40%. The analysis highlights that 'flexiwatts' from appliances like air conditioning and water heaters can reduce peak demand and better integrate renewable energy. However, the report warns that demand flexibility may accelerate 'load defection' if utilities reduce compensation for exported rooftop solar PV.

The report analyzes 'demand flexibility' (DF)—the use of technology to shift electricity loads like air conditioning and EV charging to lower-cost times. It finds that widespread residential DF could avoid $13 billion annually in U.S. grid costs and reduce customer bills by 10–40%. Through four case studies (ComEd, SRP, HECO, and Alabama Power), the report demonstrates how DF can mitigate peak demand, integrate rooftop solar PV, and provide a lower-cost alternative to traditional grid infrastructure investments.

The SE4All Finance Committee report identifies a global annual investment need of over $1 trillion to meet 2030 sustainable energy goals, noting a significant funding gap of $654-862 billion. It argues that while capital is abundant, it is not automatically allocated to sustainable energy due to perceived risks, particularly in emerging markets. The report proposes four key investment themes—green bonds, DFI risk-sharing structures, new insurance solutions, and aggregation models—which could collectively catalyze an additional $120 billion in annual investment by 2020. It emphasizes the need for improved project preparation, the use of dedicated project preparation funds, and the strengthening of the governance and creditworthiness of power utilities in developing countries to create a pipeline of bankable projects.

The document argues that failing to integrate gender equality into climate change mitigation projects can reinforce existing inequalities and reduce project efficacy. It highlights that women are often viewed as victims rather than active leaders in climate solutions. Drawing from case studies in Nepal, Mali, and Colombia, the report emphasizes that gender mainstreaming, the use of socially disaggregated data, and gender-sensitive institutional policies are essential for the success and long-term viability of mitigation initiatives, ranging from large-scale transport to small-scale off-grid energy projects.

The briefing examines the transition from flat residential electricity rates to demand charges, which bill customers based on their peak power usage rather than total energy consumption. It argues that as technologies like rooftop solar and electric vehicles create diverse consumption patterns, demand charges can better align customer costs with the actual strain they place on the grid. The author highlights that such rates incentivize load shifting and the adoption of DERs, citing examples from utilities like Salt River Project and Black Hills Power.

The Sierra Club and Chesapeake Climate Action Network oppose Exelon's acquisition of Pepco Holdings, Inc., asserting that the proposed settlement is insufficient. They argue that Exelon's solar commitments are merely statutory obligations, its financial health is questionable, and the merger would conflict with Maryland's renewable energy goals. The brief claims that the acquisition offers negligible ratepayer savings while introducing substantial risks to the public interest.