Search Climate Insights Directory
180 results
STEPPING UP: BENEFITS AND COST OF ACCELERATING FORT COLLINS' ENERGY AND CLIMATE GOALS
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.
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Document type: Report
MIDWESTERN BRIEFING ON AMERICA’S POWER PLAN Summary Report
The report details a September 2013 briefing on America’s Power Plan (APP), focusing on the transition to a high-renewables future in the U.S. Midwest. It examines the need for new utility business models to handle decarbonization and distributed energy resources (DERs), highlights Minnesota's legislative progress on solar and renewable standards, and discusses Xcel Energy's experience integrating variable wind power. Key recommendations include adopting performance-based regulation, streamlining 'soft costs' for solar PV, and integrating distribution planning into state resource processes.
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Document type: Report
ADVANCING MILITARY MICROGRIDS
The report examines the transition of U.S. Navy bases in the Southwest toward microgrids to enhance energy security and integrate renewables. It identifies five key findings: the need for more granular design requirements, a conflict between utility-scale renewable goals and microgrid security, the immediate value of enhanced control systems, the complexities of participating in California's electricity markets, and internal Navy bureaucratic barriers. The document recommends that the Navy, grid operators, and regulators collaborate to define reliability needs, quantify the business case, and remove regulatory hurdles to enable microgrid adoption.
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Document type: Report
New Business Models for the Distribution Edge
The document argues that traditional utility business models, based on natural monopolies and centralized generation, are ill-equipped for the rise of distributed energy resources (DERs). It proposes a transition from a linear value chain to a 'value constellation' where the utility acts as a platform for value-based transactions. The paper outlines several potential models, including the Integrated Distributed Resource Manager, the Distributed Resource Finance Aggregator, and the Independent Distribution Network Operator, while discussing international examples of transactive grids and differentiated network charges.
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Document type: Research paper
RAMPING UP RENEWABLES
The report examines the growth of wind and solar power in the U.S. and globally, asserting that the technical challenges of variable energy sources are manageable. It highlights successful integration by utilities like Xcel Energy and countries like Denmark and Germany. The document details various tools for maintaining reliability—including geographic dispersion, improved forecasting, transmission upgrades, and energy storage—and cites studies suggesting that renewables could provide 80% of U.S. electricity by 2050.
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Document type: Report
EDGE MODEL EXECUTIVE SUMMARY
The EDGE model is a modular simulation tool developed by RMI to address the lack of analytical tools for evaluating distributed energy resources (DERs). It integrates resource portfolio planning, bulk power dispatch, distribution system simulation via OpenDSS, and rate/regulation accounting to determine the financial and operational impacts on utilities, customers, third-party providers, and society. While designed for utility or regional scales, it is not intended for national-level analysis or as a replacement for full distribution management systems.
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Document type: Executive summary
Two kinds of demand-response
The briefing distinguishes between two types of demand-response: 'capacity' and 'balancing'. Demand-response as capacity reduces the need for new power plants by moderating peak demand events, while demand-response as balancing uses automated technology to adjust electricity use in real-time to complement variable renewable energy output.
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Document type: Briefing
Renewable Energy Policy Experience Lessons for Japan
The document identifies five key realms for renewable energy policy: direct purchase mandates, improving the business case through financial incentives, removing non-price barriers, supporting research and development, and addressing grid intermittency. It recommends that Japan maintain its generous feed-in tariffs, expand demand response, and unbundle transmission from generation to increase competition. The report provides detailed international case studies from the US, Germany, and other nations to illustrate effective mechanisms such as Green Banks, loan guarantees, and carbon taxes.
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Document type: Report
Europe’s Challenge: A Smart Power Market at the Centre of a Smart Grid
The report assesses the inefficiencies of the current European power market, specifically regarding congestion management and wind integration. It compares existing approaches like market coupling and loop-flow incorporation with the US-style nodal pricing system. The author concludes that an integrated power market managed by Independent System Operators (ISOs) is superior because it provides full system visibility, reflects actual transmission constraints in pricing, and accommodates the short-term forecasting nature of intermittent renewables. The document identifies institutional barriers from TSOs and conventional generators but suggests that European-level leadership is necessary to implement these reforms to meet low-carbon targets.
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Document type: Report
Rocky Mountain Institute Smart Garage Charrette Pre-Read
The document introduces the 'Smart Garage' concept—the convergence of electrified vehicles, smart grids, and building energy systems—and provides a framework for a stakeholder charrette to overcome implementation barriers. RMI's financial modeling suggests that while basic convenience charging (V0G) is costly, integrated scenarios like Vehicle-to-Building (V2B) and Vehicle-to-Grid (V2G) can be profitable, with V2B estimated at a net present value of $34B. The briefing identifies critical technical and business barriers, such as battery costs and lack of standardization, and outlines 'hot topics' for debate, including control of charging and the role of government subsidies.
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Document type: Briefing
Keeping the Lights On While Transforming Electric Utilities
The report challenges the traditional utility assumption that 'baseload' power plants are necessary for grid stability, noting that all generators, including coal and nuclear, experience outages. It proposes a new electricity paradigm integrating energy efficiency, demand response, renewables, and storage. The authors assert that variable renewables like wind and solar can reliably meet demand if utilities use existing plants differently, incorporate new storage technologies, and increase control over demand. Examples from Denmark, Germany, and a NREL study on the eastern U.S. are cited to demonstrate the feasibility of high renewable penetration.
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Document type: Report
DIRECT TESTIMONY
Dr. Hyde Merrill provides expert testimony challenging the technical necessity of the $1.8 billion PATH transmission project. He argues that PJM Interconnection's reliability claims are based on flawed planning, inaccurate extrapolations, and undocumented changes in assumptions. Specifically, he asserts that alleged voltage issues could be resolved with capacitors costing $40 million, and that thermal violations on lower-voltage lines could be fixed for approximately $66 million. He further claims that 500-kV thermal violations are speculative, based on unreliable extrapolation rather than contingency analysis, and ignore available generation and demand-side management resources. Merrill concludes that the project would increase reliance on remote coal-fired power and recommends a strategic shift toward local renewables and gas-fired plants.
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Document type: Report
Strong Federal Transmission Policy: A Key Component of a Clean Energy Future
The Union of Concerned Scientists asserts that the United States requires federal legislation to overcome barriers in the planning and siting of transmission lines, which currently hinder the deployment of renewable energy. The document advocates for 'Green Energy Superhighways' to connect remote renewable resource areas to population centers, while emphasizing that federal authority should act as a backstop when states cannot agree on facilities of national interest. It warns that without a federal cap-and-trade system, transmission expansion in the Northeastern United States could inadvertently increase carbon emissions by allowing coal-based power to flow from non-RGGI states to those with emission caps.
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Document type: Fact sheet
SPATIAL AND TEMPORAL INTERACTIONS OF WIND AND SOLAR IN THE NEXT GENERATION UTILITY
The paper argues that the variability of renewable energy can be managed through optimized geographic dispersion and the cross-firming of wind and solar resources. By analyzing data from the MRO, SPP, and ERCOT regions, the study demonstrates that expanding the geographic scope of a renewable portfolio significantly reduces system variability and the frequency of zero-power production. It also finds that combining solar and wind resources further lowers variability compared to wind-only portfolios. The authors conclude that these strategies, combined with demand response, energy storage (such as xEVs), and smart grid communications, can reduce the reliance on conventional baseload power.
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Document type: Research paper
SPATIAL AND TEMPORAL INTERACTIONS OF SOLAR AND WIND RESOURCES IN THE NEXT GENERATION UTILITY
The research demonstrates that creating optimized portfolios of geographically diverse wind and solar sites significantly reduces power output variability compared to individual sites. In the modeled U.S. Midwest region for 2004, combined wind and solar portfolios achieved an average variability reduction of 55% below the average of individual sites. The study finds that a small subset of available sites is often sufficient to achieve most of these variability reductions. To manage remaining variability, the authors propose integrating responsive loads, energy storage via electric vehicles, and intelligent grid communications.
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Document type: Research paper
Intermittent Renewables in the Next Generation Utility
The research demonstrates that geographically distributing wind farms reduces the variability of power output and drastically decreases the frequency of zero-production periods compared to individual sites. Using 2004 data from the U.S. Midwest and Texas, the analysis shows that optimizing portfolios based on negative covariance between sites improves capacity credit and system reliability. The authors argue that this approach, combined with demand-side resources like plug-in vehicles and real-time load response, is essential for the transition to a next-generation utility capable of integrating significantly higher levels of intermittent renewables.
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Document type: Research paper
Valuation of Renewable and Distributed Resources: Implications for the Integrated Resource Planning Process
The document argues that traditional integrated resource planning (IRP) is too generation-centric and fails to account for the specific operational, financial, and grid-side benefits of distributed and renewable energy. It introduces the Energy Resource Investment Strategy (ERIS) methodology, which uses probabilistic load and fuel forecasting and portfolio theory to value these resources. Key technical discussions include the use of Effective Load Carrying Capability (ELCC) to measure reliability contributions, the role of geographical dispersion in reducing portfolio variability, and the financial advantages of modular, short-lead-time resources in mitigating the risk of overbuilding capacity.
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Document type: Report
Federal Higher-Impact Carbon-Free Electricity Procurement
The memo advocates for a shift from traditional renewable energy procurement to a 'higher-impact' approach that matches electricity consumption with carbon-free generation on an hourly and regional basis. It argues that this method better incentivizes the deployment of firm carbon-free resources and energy storage, leading to greater actual carbon reductions than traditional annual matching. The authors recommend that the Biden Administration set targets for federal facilities to achieve 100% round-the-clock carbon-free electricity consumption.
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Document type: Statement
The Regulatory Assistance Project’s (RAP) and ClientEarth’s Concerns with UK Capacity Mechanism’s State Aid Conformity
The Regulatory Assistance Project (RAP) and ClientEarth challenge the UK government's (DECC) justification for a market-wide Capacity Mechanism, asserting that the analysis of generation adequacy is overly conservative and ignores the potential of demand response and interconnectors. They argue that a targeted strategic reserve would be a more cost-effective and less distortive alternative, especially given Ofgem's planned reforms to the Balancing Mechanism which would introduce stronger scarcity pricing signals.
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Document type: Statement
BARRIERS TO INNOVATION IN THE CANADIAN ELECTRICITY SECTOR AND AVAILABLE POLICY RESPONSES
The document identifies systemic barriers to decarbonizing Canada's electricity grid, including misaligned utility mandates, vested interests, siloed planning, and market access restrictions. It recommends implementing system-wide decarbonization mandates, technology-neutral Clean Electricity Standards, and performance-based regulation to incentivize innovation. The paper also emphasizes the need for improved interprovincial transmission and larger grid-balancing regions to integrate variable renewable energy.
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Document type: Research paper