Search Climate Insights Directory
94 results
A New Road
The report argues that hybrid electric vehicles (HEVs) can bridge the gap between current conventional vehicle technology and the long-term adoption of hydrogen fuel cells. It categorizes hybrids into mild, full, and plug-in types based on technological steps like regenerative braking and electric-only drive. Modeling suggests a passenger fleet using advanced full hybrids could reach an average of 60 mpg, significantly reducing oil consumption and greenhouse gas emissions while remaining cost-effective for consumers over the vehicle's lifetime.
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Document type: Report
Cleaner technologies: a positive choice
The document argues that reducing environmental impact requires a shift from selling products to providing services, alongside a massive transition to renewable energy and energy-efficient technologies. It outlines 'eco-design' principles and specific energy options—such as combined heat and power, hybrid engines, and various renewables—while encouraging science and engineering graduates to seek employers committed to reducing life-cycle impacts.
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Document type: Briefing
Pollution Report Card
The report evaluates the emissions of US school bus fleets, finding that the vast majority rely on high-polluting diesel engines that pose significant health risks to children. It advocates for a transition to cleaner alternatives, specifically natural gas, and calls for federal and state funding to replace aging fleets.
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Document type: Report
The New Business Climate
The document argues that proactive action on climate change can reduce costs, mitigate risks, and create competitive advantages. It outlines short-term strategies like emission tracking and 'no-regrets' energy efficiency, and long-term investments in clean technology and carbon trading. It emphasizes 'whole-systems thinking' to achieve radical resource efficiency and provides case studies of companies like BP, Dow, and Interface that have integrated sustainability into their business models.
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Document type: Guide
Energy Efficiency Survey Aboard USS Princeton CG-59
The report finds that the USS Princeton's cruise-condition electric load of 2 MW could be reduced by 20–50%, potentially lowering total fuel use by 10–25%. The most significant savings are identified in motors, pumps, fans, chillers, and lighting. A critical finding is that current operational practices—specifically running two gas turbine generators (GTGs) in parallel at partial loads—negate approximately 75–80% of the fuel savings that would otherwise result from electrical load reductions. The report recommends transitioning to single GTG operation during routine cruise conditions, implementing Variable-Speed Drives (VSDs), and adopting premium-efficiency equipment. More intensive strategies, including the use of fuel-cell generators and low-speed electric propulsion, could potentially reduce total fuel use by roughly 75%.
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Document type: Report
Clean Renewables and Efficiency, not Coal, are the Key
The authors oppose a proposal by Colorado State Representative Carl Miller to increase coal use, arguing that coal plants are expensive, polluting, and slow to implement. They propose a transition toward energy efficiency, which could save up to 70% of current electricity use, and distributed energy resources including wind, solar, bio-fuels, and fuel cells. The text highlights the success of wind energy programs in Colorado, such as those by Holy Cross Energy and Public Service Company, as evidence of the viability of a free-market approach to clean energy.
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Document type: Statement
Rolling Smokestacks
The report argues that while diesel trucks and buses are essential for commerce, they are disproportionate sources of smog, soot, and greenhouse gases. It evaluates a transition from conventional diesel to a 'green truck path' involving advanced exhaust controls, natural gas, hybrids, and fuel cells. The authors model a 2030 scenario where aggressive policies could reduce pollutant emissions by over 90% and global warming pollutants by 26%, while maintaining current oil consumption levels despite doubling truck travel.
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Document type: Report
Profiting From a Nuclear-Free Third Millenium
The author contends that nuclear power has suffered a historic industrial collapse due to capital cost escalations and technical failures, making it uncompetitive against cheaper alternatives. The report highlights end-use efficiency as the most potent competitor, noting that well-designed industrial retrofits can save electricity at costs as low as $0.005/kWh. Other viable alternatives mentioned include combined-cycle gas turbines, wind power, and proton-exchange-membrane fuel cells. The author further argues that moving away from civilian nuclear commerce would reduce the risk of nuclear bomb proliferation by making the acquisition of 'bomb-kit ingredients' more conspicuous. Finally, the text asserts that nuclear power exacerbates global warming by displacing more cost-effective energy-saving options, thereby increasing the opportunity cost of climate mitigation.
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Document type: Report
Exchanges between Mark Mills and Amory Lovins about the electricity used by the Internet
The document consists of email correspondence and letters between Amory Lovins (RMI) and Mark Mills (science advisor to the Greening Earth Society) following a Forbes article by Mills and Peter Huber. Mills argued that the Internet's energy demand is growing exponentially and will require significant continued reliance on coal-fired power. Lovins, supported by scientists from Lawrence Berkeley National Laboratory, challenged these claims as 'junk science,' arguing that Mills grossly overstated the power consumption of individual devices (PCs and routers) and ignored efficiency gains. The exchange concludes with Lovins accusing Mills of failing to respond to specific technical rebuttals and violating professional ethics by publishing private correspondence.
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Document type: Report
A Strategy for the Hydrogen Transition
The paper argues that the transition to a hydrogen economy can be accelerated by first deploying fuel cells in buildings for co-generation and then in 'Hypercars'—ultralight-hybrid vehicles that require significantly less fuel-cell capacity. This approach allows for a decentralized hydrogen infrastructure using existing natural gas and electricity grids, eventually scaling up to bulk supply from renewable sources or carbon-sequestering natural gas reforming.
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Document type: Research paper
Hypercar® Vehicles Frequently Asked Questions (FAQs)
The Hypercar concept, developed by the Rocky Mountain Institute (RMI), proposes a 'whole-system' approach to vehicle design to achieve fuel economies of 90 to 200 mpg. This is accomplished through the synergy of advanced polymeric composites to reduce mass by 50-65%, aerodynamic improvements to cut drag by 40-50%, and hybrid-electric drivesystems that recover up to 50% of braking energy. The document asserts that these vehicles can maintain safety standards, including in collisions with heavier cars, and could be compatible with various fuels, including hydrogen via fuel cells. RMI estimates that production-volume Hypercars could appear in the early 2000s, with costs comparable to conventional vehicles.
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Document type: Fact sheet
ADVANCED COMPOSITES: THE CAR IS AT THE CROSSROADS
The paper assesses the state of advanced polymer composites in the automotive industry, noting that while automakers are exploring advanced technologies like fuel cells and hybrid drives, the composites industry remains fragmented and focused on niche applications. It introduces the 'hypercar' concept—integrating ultralight platforms with hybrid propulsion—and explains how 'mass decompounding' can lead to 'cost decompounding', making expensive materials economically viable. The authors contrast the passive approach of composites firms with the aggressive, whole-system strategies of the steel (e.g., ULSAB project) and aluminum industries. To avoid being squeezed out, the authors recommend ten strategic actions, including building a high-profile composite demonstration car, partnering with automakers, and collaborating through trade groups.
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Document type: Research paper
CLIMATE: Making Sense and Making Money
The document challenges the assumption that climate protection is a financial burden, asserting that energy-efficiency investments often yield returns exceeding 100% per year. It identifies eight categories of market failures—including capital misallocation, organizational failures, and perverse regulatory incentives—that cost the American economy approximately $300 billion annually. By shifting focus from theoretical economic models to empirical business evidence, the authors demonstrate that 'whole-system engineering' and 'barrier-busting' policies can reduce carbon emissions while increasing GDP and competitiveness. The report highlights that high energy prices are not the only driver of efficiency, citing Seattle's success in saving electricity faster than Chicago despite lower prices. It concludes that a market-transformation approach can stabilize the climate and foster economic growth globally, particularly in developing nations.
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Document type: Report
Speeding The Transition: Designing A Fuel-Cell Hypercar
The paper proposes a 'hypercar' design—characterized by ultralight composite bodies and hybrid-electric propulsion—to overcome the traditional barriers to hydrogen fuel cell adoption. By reducing vehicle mass and aerodynamic drag, the authors argue that the required fuel-cell capacity is significantly lowered, making the technology economically viable sooner. Modeling of three PEMFC scenarios shows that such vehicles could achieve high fuel efficiency (up to 124 mpgequiv) and long ranges (approximately 925 km) with modest hydrogen storage. The document further suggests that the mass production of PEMFCs could be accelerated by their application in stationary building power systems, which could eventually displace traditional thermal power stations.
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Document type: Research paper
Ultralight Hybrid Vehicles: Principles and Design
The paper presents a technical case for 'ultralight hybrid vehicles' (UHVs), asserting that fuel efficiency can be improved 3–4x over conventional cars without compromising marketability. It emphasizes that reducing tractive loads—through mass reduction, aerodynamic optimization, and low-rolling-resistance tires—is the most critical factor in making hybrid drivesystems cost-effective. Using the SIMPLEV model, the author demonstrates a design with a curb mass of 585 kg and a drag coefficient of 0.19 that achieves high fuel economy (up to 115 mpg on highways) and low emissions, while meeting strict performance criteria for acceleration and gradability.
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Document type: Research paper
Vehicle Design Strategies to Meet and Exceed PNGV Goals
The paper argues that achieving tripled fuel economy requires a systems-optimization approach rather than incremental improvements. It proposes a combination of carbon-fiber composite body-in-white structures, low-drag aerodynamics, and series hybrid-electric propulsion. Modeling suggests that such a 'leapfrog' approach can yield vehicles achieving 80-100+ mpg while maintaining family-sedan utility and safety.
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Document type: Research paper
Supercars
The paper proposes replacing conventional steel cars with 'supercars' that combine ultralight composite bodies, aerodynamic optimization, and hybrid-electric powertrains. The authors argue that such vehicles could achieve fuel efficiencies of <1.6 litres per 100 km in the near term and 0.8-1.0 litres per 100 km ultimately, without sacrificing safety or performance. This transition would require a shift from capital-intensive steel stamping to flexible, low-tooling composite moulding and a move toward direct-to-consumer marketing, potentially disrupting the existing industrial structure of the global auto industry.
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Document type: Research paper
2020_sipa_zero-carbon-shipping-ff0601c636cfdb0f.pdf
The report examines the transition of global shipping to zero-carbon fuels, specifically hydrogen and ammonia. It identifies a 'chicken-and-egg' dilemma where infrastructure investment depends on demand, and demand depends on supply. The analysis evaluates several major ports—including Rotterdam, Jebel Ali, Los Angeles, Houston, Tokyo, Shanghai, and Hong Kong—based on their trade connectivity, technological capacity for fuel production, and policy support. It concludes that while blue hydrogen is currently the most realistic large-scale production pathway, green hydrogen is promising in regions with cheap renewables like the UAE and Australia. The report recommends establishing trans-oceanic coalitions, partnering fuel suppliers with shipping companies along major trade routes, and leveraging public finance to de-risk infrastructure investments.
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Document type: Report
Hydrogen Fuel Cells for Heavy-Duty Trucking
The document examines the role of hydrogen fuel cells in decarbonizing heavy-duty trucking, noting their efficiency advantage over internal combustion engines and suitability for long-haul operations compared to battery electric vehicles (BEVs). It identifies California as the primary region for adoption due to supportive policies, but highlights critical barriers including high hydrogen costs, infrastructure gaps, and the financial instability of FCEV startups like Nikola and Hyzon.
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Document type: Report
CLEAN HYDROGEN
The document outlines the growth potential of the clean hydrogen market, noting that global demand could exceed 6% of total final energy consumption by 2050. It highlights Canada's competitive advantages in production due to its geology and renewable energy resources, while identifying barriers such as high costs and infrastructure gaps.
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Document type: Fact sheet