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The paper examines the potential of end-use energy efficiency to displace primary energy supplies and reduce global carbon emissions. It argues that traditional economic models underestimate this potential by ignoring market failures and the benefits of whole-system design. The author demonstrates that integrating efficiency across an entire system—such as a building or a vehicle—can lead to 'expanding returns' where massive energy savings actually reduce total capital costs. The text advocates for a shift from price-centric policies to 'barrier-busting' and competitive markets for 'negawatts' (saved watts) to accelerate the transition to sustainable energy systems.

The document argues that healthy communities are developed not through technical expertise or charismatic leadership, but through a gradual process led by creative, open-minded residents who utilize active listening and collaboration with those they disagree with.

The report outlines legislative strategies for U.S. states to increase vehicle efficiency, categorizing them into short-term options—such as HOV lane access for Alternative Fuel Vehicles (AFVs) and Hybrid Electric Vehicles (HEVs), state procurement mandates, and tire labeling—and long-term options, including tax incentives, 'pay-at-the-pump' insurance, and feebate programs. It argues that state action is necessary due to the economic burden of high oil prices, security risks associated with oil dependence, and environmental impacts like carbon dioxide emissions.

The document argues that the technical and economic barriers to a hydrogen economy have been largely resolved. It proposes a decentralized transition strategy starting with fuel cells in buildings and efficient vehicles, utilizing existing natural gas infrastructure as a near-term bridge to renewable sources. The author contends that hydrogen fuel cells are significantly more efficient than internal combustion engines, making hydrogen cost-competitive per mile driven despite higher energy costs per unit. The paper dismisses safety concerns, infrastructure costs, and environmental risks as myths, asserting that a well-designed transition would reduce oil dependence and carbon emissions without requiring a massive federal 'crash program'.

The report outlines a framework for 'healthy design' in hospitals, arguing that sustainable architecture and engineered systems can reduce operating costs, improve clinical outcomes, and enhance staff retention. It provides a comprehensive set of recommendations for Massachusetts healthcare providers, ranging from regional collaborations and institutional policy changes to specific architectural and engineering interventions such as combined cooling, heating, and power (CCHP) systems and displacement ventilation. The document emphasizes the 'business case' for green building, citing evidence that such projects often have minimal capital cost premiums while offering significant life-cycle savings and health benefits.

The report argues that while fuel cells have high initial capital costs, they can be cost-effective by capturing 'distributed benefits' such as deferring utility distribution investments, providing premium reliability for the digital economy, and meeting strict urban emission standards. It proposes a commercialization path starting with grid-connected systems in commercial buildings and semiconductor fabs, eventually integrating with fuel-cell vehicles through vehicle-to-grid (V2G) systems.

The document explains how to reduce home heating and cooling expenses by improving the building envelope. It details the physics of heat loss and gain, provides guidance on selecting and installing insulation materials, offers methods for identifying and sealing air leaks, and evaluates various window upgrade options from low-cost films to full replacements.

The document argues that home lighting efficiency is best achieved through a 'whole-system' approach rather than simple bulb replacement. It highlights the benefits of Compact Fluorescent Lamps (CFLs) and emerging LED technology, while strongly advising against the use of halogen torchieres due to fire risks and energy waste. The briefing also emphasizes the role of lighting controls, task lighting, and daylighting in reducing electricity consumption and improving well-being.

The document outlines strategies to lower utility bills and environmental impact by optimizing the use of cleaning appliances. It highlights the significant energy role of water heating, compares the efficiency of different machine types (such as horizontal-axis vs. vertical-axis washers), and suggests behavioral changes like cold-water washing and air-drying. It also introduces advanced technologies like Heat Pump Clothes Dryers and provides a comparison of high-efficiency dishwasher models.

The report analyzes the economic trade-offs between decentralized and centralized wastewater systems, arguing that while treatment plants exhibit economies of scale, collection networks often exhibit diseconomies of scale. It highlights the financial advantages of modular, 'just-in-time' capacity expansion and the potential for water reuse and nutrient harvesting. The document also details various economic valuation methods for non-market environmental goods and the importance of professional management to ensure system reliability.

Amory B. Lovins of the Rocky Mountain Institute argues that the APS Hydrogen Report incorrectly claims a need for new storage materials and underestimates the competitiveness of reformed hydrogen because it assumes the use of heavy, inefficient vehicles. Lovins asserts that ultralight, high-efficiency vehicle designs make current compressed-gas storage and natural-gas-reformed hydrogen economically viable. He further contends that electrolytic hydrogen is too expensive to justify nuclear power subsidies and criticizes the APS panel for relying on a narrow range of outdated governmental sources rather than current technical evidence.

Amory B. Lovins, CEO of RMI, submits comments to NHTSA challenging the technical basis of its proposed rulemaking on automobile fuel economy standards. He argues that NHTSA incorrectly relies on retrospective correlations between vehicle weight and safety, which fail to account for modern materials like advanced polymer composites and high-strength steels. Lovins asserts that these materials can create vehicles that are simultaneously large, lightweight, and safe, thereby eliminating the perceived tradeoff between fuel economy and crashworthiness. He recommends that CAFE standards be performance-based, technology-forcing, and based on size metrics rather than mass to avoid incentivizing a 'mass arms race' and to maintain the global competitiveness of U.S. automakers.

The document outlines a hierarchy for space cooling, prioritizing the minimization of heat gain through passive measures before investing in mechanical systems. It details various cooling technologies, including fans, evaporative coolers, heat pumps, and air conditioners, providing guidance on their efficiency, costs, and appropriate climatic applications.

The document outlines strategies for reducing home heating expenses, emphasizing that a well-insulated home is the primary step toward efficiency. It compares various heating systems, including furnaces, boilers, in-space heaters, heat pumps, and active solar heating, detailing their efficiencies (AFUE), costs, and maintenance requirements. It also provides guidance on sizing new equipment and calculating potential savings when upgrading systems.

Water heating typically accounts for approximately 19 percent of total home energy use in the U.S. This guide outlines immediate low-cost efficiency improvements, such as lowering thermostat settings to 115–120°F and insulating tanks, alongside long-term equipment upgrades. It compares the economics of various water heaters, noting that demand (tankless) heaters and heat pumps offer significant efficiency gains over standard electric tanks. The document also details solar thermal options and drain-water heat recovery systems, which can capture heat from water that would otherwise be wasted.

The document argues that changing usage habits, such as unplugging devices to avoid standby power, is more effective for energy saving than simply purchasing more efficient hardware. It details the energy profiles of computers, monitors, and peripherals, while highlighting the significant environmental toxicity and global waste issues associated with the electronics life-cycle.

The document outlines strategies for reducing the energy footprint of the kitchen, focusing on the life cycle of food and the efficiency of appliances. It highlights that refrigerator energy use has dropped over 60 percent in twenty years due to technology and standards, though older models remain costly. For cooking, it argues that habits are more impactful than technology, recommending smaller appliances like microwaves and toaster ovens over conventional ovens. It also emphasizes the environmental benefits of buying local, organic food and implementing composting and recycling to reduce the millions of tons of food and packaging waste entering U.S. landfills.

The document advocates for 'whole system design' in home construction and renovation, arguing that considering the interconnections between systems, occupants, and the environment can make green homes cost less than conventional ones. It emphasizes a 'passive before active' approach, prioritizing the building envelope and solar orientation to reduce the need for mechanical heating and cooling. Key strategies include optimizing south-facing glazing, utilizing thermal mass (such as masonry or water), and implementing 'cool roof' or 'green roof' systems. The guide also provides a comparative analysis of wall materials—such as straw bale, adobe, and SIPs—based on thermal performance, toxicity, and cost, while introducing Energy Efficient Mortgages (EEMs) as a financing tool for these improvements.

Amory B. Lovins argues that the 10-20% hydrogen leakage rate assumed by Tromp et al. is unsupported and technically implausible. He contends that boiloff from liquid hydrogen (LH2) tanks does not equate to atmospheric emissions because it is used as fuel or catalytically oxidized. Furthermore, Lovins asserts that compressed gaseous hydrogen (GH2) is the industry norm due to superior economics, lower mass, and adequate range, whereas LH2 remains a niche technology with poor economic prospects.

Amory B. Lovins challenges the claim that a U.S. hydrogen economy requires a fourfold expansion of nuclear power. He argues that fuel cells will accelerate the decline of nuclear power by providing cheaper energy services. Lovins asserts that the hydrogen needs for the U.S. highway vehicle fleet could be met by wind turbines in North and South Dakota, and that an orderly transition to hydrogen would require less capital, land, and fossil fuels than a business-as-usual oil-based scenario. He further contends that wind power is more cost-competitive than new nuclear plants and that distributed energy resources offer greater economic value than centralized power stations.