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2011 Cost of Wind Energy Review (open access)

2011 Cost of Wind Energy Review

This report describes the levelized cost of energy (LCOE) for a typical land-based wind turbine installed in the United States in 2011, as well as the modeled LCOE for a fixed-bottom offshore wind turbine installed in the United States in 2011. Each of the four major components of the LCOE equation are explained in detail, such as installed capital cost, annual energy production, annual operating expenses, and financing, and including sensitivity ranges that show how each component can affect LCOE. These LCOE calculations are used for planning and other purposes by the U.S. Department of Energy's Wind Program.
Date: March 1, 2013
Creator: Tegen, S.; Lantz, E.; Hand, M.; Maples, B.; Smith, A. & Schwabe, P.
System: The UNT Digital Library
2012 Groundwater Monitoring and Inspection Report Gnome-Coach, New Mexico, Site (open access)

2012 Groundwater Monitoring and Inspection Report Gnome-Coach, New Mexico, Site

Gnome-Coach was the site of a 3-kiloton underground nuclear test conducted in 1961. Surface and subsurface contamination resulted from the underground nuclear testing, post-test drilling, and a groundwater tracer test performed at the site. Surface reclamation and remediation began after the underground testing. A Completion Report was prepared, and the State of New Mexico is currently proceeding with a conditional certificate of completion for the surface. Subsurface corrective action activities began in 1972 and have generally consisted of annual sampling and monitoring of wells near the site. In 2008, the annual site inspections were refined to include hydraulic head monitoring and collection of samples from groundwater monitoring wells onsite using the low-flow sampling method. These activities were conducted during this monitoring period on January 18, 2012. Analytical results from this sampling event indicate that concentrations of tritium, strontium-90, and cesium-137 were generally consistent with concentrations from historical sampling events. The exceptions are the decreases in concentrations of strontium-90 in samples from wells USGS-4 and USGS-8, which were more than 2.5 times lower than last year's results. Well USGS-1 provides water for livestock belonging to area ranchers, and a dedicated submersible pump cycles on and off to maintain a constant volume …
Date: March 1, 2013
Creator: unknown
System: The UNT Digital Library
2012 Groundwater Monitoring Report Project Shoal Area Subsurface Corrective Action Unit 447 (open access)

2012 Groundwater Monitoring Report Project Shoal Area Subsurface Corrective Action Unit 447

The Project Shoal Area (PSA) in Nevada was the site of a 12-kiloton underground nuclear test in 1963. Although the surface of the site has been remediated, investigation of groundwater contamination resulting from the test is still in the corrective action process. Annual sampling and hydraulic head monitoring are conducted at the site as part of the subsurface corrective action strategy. Analytical results from the 2012 monitoring are consistent with those of the previous years, with tritium detected only in well HC-4. The tritium concentration in groundwater from well HC-4 remains far below the U.S. Environmental Protection Agency-established maximum contaminant level of 20,000 picocuries per liter. Concentrations of total uranium and gross alpha were also detected during this monitoring period, with uranium accounting for nearly all the gross alpha activity. The total uranium concentrations obtained from this monitoring period were consistent with previous results and reflect a slightly elevated natural uranium concentration, consistent with the mineralized geologic terrain. Isotopic ratios of uranium also indicate a natural source of uranium in groundwater, as opposed to a nuclear-test-related source. Water level trends obtained from the 2012 water level data were consistent with those of previous years. The corrective action strategy for the …
Date: March 1, 2013
Creator: unknown
System: The UNT Digital Library
2012 Vehicle Technologies Market Report (open access)

2012 Vehicle Technologies Market Report

The Oak Ridge National Laboratory s Center for Transportation Analysis developed and published the first Vehicle Technologies Market Report in 2008. Three editions of the report have been published since that time. This 2012 report details the major trends in U.S. light vehicle and medium/heavy truck markets as well as the underlying trends that caused them. The opening section on Energy and Economics discusses the role of transportation energy and vehicle markets on a national scale. The following section examines light-duty vehicle use, markets, manufacture, and supply chains. The discussion of medium and heavy trucks offers information on truck sales and fuel use. The technology section offers information on alternative fuel vehicles and infrastructure, and the policy section concludes with information on recent, current, and near-future Federal policies like the Corporate Average Fuel Economy standards.
Date: March 1, 2013
Creator: Davis, Stacy Cagle; Diegel, Susan W & Boundy, Robert Gary
System: The UNT Digital Library
The 2013 Cybersecurity Executive Order: Overview and Considerations for Congress (open access)

The 2013 Cybersecurity Executive Order: Overview and Considerations for Congress

This report provides background information regarding the threats and consequences of cybersecurity. The federal legislative framework for cybersecurity is complex, with more than 50 statutes addressing various aspects of it either directly or indirectly.
Date: March 1, 2013
Creator: Fischer, Eric A.; Liu, Edward C.; Rollins, John W. & Theohary, Catherine A.
System: The UNT Digital Library
Advanced Fuels Campaign Cladding & Coatings Meeting Summary (open access)

Advanced Fuels Campaign Cladding & Coatings Meeting Summary

The Fuel Cycle Research and Development (FCRD) Advanced Fuels Campaign (AFC) organized a Cladding and Coatings operational meeting February 12-13, 2013, at Oak Ridge National Laboratory (ORNL). Representatives from the U.S. Department of Energy (DOE), national laboratories, industry, and universities attended the two-day meeting. The purpose of the meeting was to discuss advanced cladding and cladding coating research and development (R&D); review experimental testing capabilities for assessing accident tolerant fuels; and review industry/university plans and experience in light water reactor (LWR) cladding and coating R&D.
Date: March 1, 2013
Creator: unknown
System: The UNT Digital Library
Advancing Energy Development in Indian Country (Fact Sheet) (open access)

Advancing Energy Development in Indian Country (Fact Sheet)

This fact sheet provides information on the Strategic Technical Assistance Response Team (START) Program, a U.S. Department of Energy Office of Indian Energy Policy and Programs (DOE-IE) initiative to provide technical expertise to support the development of next-generation energy projects in Indian Country.
Date: March 1, 2013
Creator: unknown
System: The UNT Digital Library
Agricultural Quarantine Inspection Fees: Major Changes Needed to Align Fee Revenues with Program Costs (open access)

Agricultural Quarantine Inspection Fees: Major Changes Needed to Align Fee Revenues with Program Costs

A letter report issued by the Government Accountability Office with an abstract that begins "GAO's analysis of the Agricultural Quarantine Inspection (AQI) fee and cost data revealed a more than $325 million gap between fee revenues and total program costs in fiscal year 2011, or 38 percent of AQI program costs. The program, which is co-administered by the Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) and Department of Homeland Security (DHS) Customs and Border Patrol (CBP), has a gap for several reasons: 1) APHIS's authority does not permit it to charge all persons seeking entry to the United States (e.g., pedestrians) and does not permit it to charge the costs of those inspections to others; 2) APHIS has chosen not to charge some classes of passengers, citing administrative fee collection difficulties; 3) CBP does not charge a portion of all primary inspections to agriculture functions, as required by CBP guidance; 4) APHIS does not consider all imputed costs (that is, costs incurred by other agencies on behalf of the AQI program) when setting fees; and 5) the allowable rates for overtime services are misaligned with the personnel costs of performing those services. APHIS is considering fees …
Date: March 1, 2013
Creator: United States. Government Accountability Office.
System: The UNT Digital Library
Alaska: Alaska's Clean Energy Resources and Economy (Brochure) (open access)

Alaska: Alaska's Clean Energy Resources and Economy (Brochure)

This document highlights the Office of Energy Efficiency and Renewable Energy's investments and impacts in the state of Alaska.
Date: March 1, 2013
Creator: unknown
System: The UNT Digital Library
Algal Lipid Extraction and Upgrading to Hydrocarbons Technology Pathway (open access)

Algal Lipid Extraction and Upgrading to Hydrocarbons Technology Pathway

This technology pathway case investigates the cultivation of algal biomass followed by further lipid extraction and upgrading to hydrocarbon biofuels. Technical barriers and key research needs have been assessed in order for the algal lipid extraction and upgrading pathway to be competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks.
Date: March 1, 2013
Creator: Davis, R.; Biddy, M. & Jones, S.
System: The UNT Digital Library
Algal Supply System Design — Harmonized Version (open access)

Algal Supply System Design — Harmonized Version

The objective of this design report is to provide
Date: March 2013
Creator: Abodeely, Jared; Stevens, Daniel; Ray, Allison & Schaller, Kastli
System: The UNT Digital Library
Alternative Compliance: Guidelines for Preparing and Submitting a Waiver Request Application and Other Documentation Requirements (open access)

Alternative Compliance: Guidelines for Preparing and Submitting a Waiver Request Application and Other Documentation Requirements

This document is designed to assist covered fleets interested in taking advantage of more flexible compliance options and to facilitate the transition from Standard Compliance to Alternative Compliance. It is designed to help fleets better understand the Alternative Compliance option and successfully complete the waiver application process.
Date: March 1, 2013
Creator: unknown
System: The UNT Digital Library
Analysis of Concentrating Solar Power with Thermal Energy Storage in a California 33% Renewable Scenario (open access)

Analysis of Concentrating Solar Power with Thermal Energy Storage in a California 33% Renewable Scenario

This analysis evaluates CSP with TES in a scenario where California derives 33% of its electricity from renewable energy sources. It uses a commercial grid simulation tool to examine the avoided operational and capacity costs associated with CSP and compares this value to PV and a baseload generation with constant output. Overall, the analysis demonstrates several properties of dispatchable CSP, including the flexibility to generate during periods of high value and avoid generation during periods of lower value. Of note in this analysis is the fact that significant amount of operational value is derived from the provision of reserves in the case where CSP is allowed to provide these services. This analysis also indicates that the 'optimal' configuration of CSP could vary as a function of renewable penetration, and each configuration will need to be evaluated in terms of its ability to provide dispatchable energy, reserves, and firm capacity. The model can be used to investigate additional scenarios involving alternative technology options and generation mixes, applying these scenarios within California or in other regions of interest.
Date: March 1, 2013
Creator: Denholm, P.; Wan, Y. H.; Hummon, M. & Mehos, M.
System: The UNT Digital Library
Analysis of Fission Products on the AGR-1 Capsule Components (open access)

Analysis of Fission Products on the AGR-1 Capsule Components

The components of the AGR-1 irradiation capsules were analyzed to determine the retained inventory of fission products in order to determine the extent of in-pile fission product release from the fuel compacts. This includes analysis of (i) the metal capsule components, (ii) the graphite fuel holders, (iii) the graphite spacers, and (iv) the gas exit lines. The fission products most prevalent in the components were Ag-110m, Cs 134, Cs 137, Eu-154, and Sr 90, and the most common location was the metal capsule components and the graphite fuel holders. Gamma scanning of the graphite fuel holders was also performed to determine spatial distribution of Ag-110m and radiocesium. Silver was released from the fuel components in significant fractions. The total Ag-110m inventory found in the capsules ranged from 1.2×10 2 (Capsule 3) to 3.8×10 1 (Capsule 6). Ag-110m was not distributed evenly in the graphite fuel holders, but tended to concentrate at the axial ends of the graphite holders in Capsules 1 and 6 (located at the top and bottom of the test train) and near the axial center in Capsules 2, 3, and 5 (in the center of the test train). The Ag-110m further tended to be concentrated around fuel …
Date: March 1, 2013
Creator: Demkowicz, Paul A.; Harp, Jason M.; Winston, Philip L. & Ploger, Scott A.
System: The UNT Digital Library
Approaches to 30% Energy Savings at the Community Scale in the Hot-Humid Climate (open access)

Approaches to 30% Energy Savings at the Community Scale in the Hot-Humid Climate

BA-PIRC has worked with several community-scale builders within the hot humid climate zone to improve performance of production, or community scale, housing. Tommy Williams Homes (Gainesville, FL), Lifestyle Homes (Melbourne, FL), and Habitat for Humanity (various locations, FL) have all been continuous partners of the BA Program and are the subjects of this report to document achievement of the Building America goal of 30% whole house energy savings packages adopted at the community scale. The scope of this report is to demonstrate achievement of these goals though the documentation of production-scale homes built cost-effectively at the community scale, and modeled to reduce whole-house energy use by 30% in the Hot Humid climate region. Key aspects of this research include determining how to evolve existing energy efficiency packages to produce replicable target savings, identifying what builders' technical assistance needs are for implementation and working with them to create sustainable quality assurance mechanisms, and documenting the commercial viability through neutral cost analysis and market acceptance. This report documents certain barriers builders overcame and the approaches they implemented in order to accomplish Building America (BA) Program goals that have not already been documented in previous reports.
Date: March 1, 2013
Creator: Thomas-Rees, S.; Beal, D.; Martin, E. & Fonorow, K.
System: The UNT Digital Library
Archeological Investigations at the Santa Maria Creek Site (41CW104) Caldwell County, Texas (open access)

Archeological Investigations at the Santa Maria Creek Site (41CW104) Caldwell County, Texas

Report on the excavations at the Santa Maria creek site in Caldwell County, Texas during 2006 and 2007. The report includes a discussion of research methods, analysis of the findings, and history of the area.
Date: March 2013
Creator: Rogers, Robert; Ellis, Linda W.; Harris, Brandy; Wallace, Candace; Rush, Haley; Shipp, Julie et al.
System: The Portal to Texas History
An Audit Report on Certification of the Permanent School Fund's Bond Guarantee Program for Fiscal Year 2012 (open access)

An Audit Report on Certification of the Permanent School Fund's Bond Guarantee Program for Fiscal Year 2012

Report of the Texas State Auditor's Office related to the total amount of school district bonds guaranteed by the Permanent School Fund's (Fund) Bond Guarantee Program (Program), whether these were within the limits established by Texas Education Code and the Internal Revenue Service (IRS), and recent changes made to the Program's rules and statutes.
Date: March 2013
Creator: Texas. Office of the State Auditor.
System: The Portal to Texas History
An Audit Report on Selected State Entities' Compliance with Requirements Related to the Historically Underutilized Businesses Program and the State Use Program (open access)

An Audit Report on Selected State Entities' Compliance with Requirements Related to the Historically Underutilized Businesses Program and the State Use Program

Report of the Texas State Auditor's Office related to determining whether selected state agencies or higher education institutions complied with statutory requirements and rules established by the Comptroller to implement historically underutilized business (HUB) program requirements and report complete and accurate data to the Comptroller.
Date: March 2013
Creator: Texas. Office of the State Auditor.
System: The Portal to Texas History
Biological Conversion of Sugars to Hydrocarbons Technology Pathway (open access)

Biological Conversion of Sugars to Hydrocarbons Technology Pathway

This technology pathway case investigates the biological conversion of biomass-derived sugars to hydrocarbon biofuels, utilizing data from recent literature references and information consistent with recent pilot-scale demonstrations at NREL. Technical barriers and key research needs have been identified that should be pursued for the pathway to become competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks.
Date: March 1, 2013
Creator: Davis, R.; Biddy, M.; Tan, E.; Tao, L. & Jones, S.
System: The UNT Digital Library
Blending Hydrogen into Natural Gas Pipeline Networks: A Review of Key Issues (open access)

Blending Hydrogen into Natural Gas Pipeline Networks: A Review of Key Issues

The United States has 11 distinct natural gas pipeline corridors: five originate in the Southwest, four deliver natural gas from Canada, and two extend from the Rocky Mountain region. This study assesses the potential to deliver hydrogen through the existing natural gas pipeline network as a hydrogen and natural gas mixture to defray the cost of building dedicated hydrogen pipelines.
Date: March 1, 2013
Creator: Melaina, M. W.; Antonia, O. & Penev, M.
System: The UNT Digital Library
Breakeven Prices for Photovoltaics on Supermarkets in the United States (open access)

Breakeven Prices for Photovoltaics on Supermarkets in the United States

The photovoltaic (PV) breakeven price is the PV system price at which the cost of PV-generated electricity equals the cost of electricity purchased from the grid. This point is also called 'grid parity' and can be expressed as dollars per watt ($/W) of installed PV system capacity. Achieving the PV breakeven price depends on many factors, including the solar resource, local electricity prices, customer load profile, PV incentives, and financing. In the United States, where these factors vary substantially across regions, breakeven prices vary substantially across regions as well. In this study, we estimate current and future breakeven prices for PV systems installed on supermarkets in the United States. We also evaluate key drivers of current and future commercial PV breakeven prices by region. The results suggest that breakeven prices for PV systems installed on supermarkets vary significantly across the United States. Non-technical factors -- including electricity rates, rate structures, incentives, and the availability of system financing -- drive break-even prices more than technical factors like solar resource or system orientation. In 2020 (where we assume higher electricity prices and lower PV incentives), under base-case assumptions, we estimate that about 17% of supermarkets will be in utility territories where breakeven …
Date: March 1, 2013
Creator: Ong, S.; Clark, N.; Denholm, P. & Margolis, R.
System: The UNT Digital Library
Bridge Deck Reinforcement and PCP Cracking: Final Report (open access)

Bridge Deck Reinforcement and PCP Cracking: Final Report

Study examining the comparative efficiency of different types of high-performance steel fibers used in bridge decks.
Date: March 2013
Creator: University of Texas. Center for Transportation Research.
System: The Portal to Texas History
Brine flow in heated geologic salt. (open access)

Brine flow in heated geologic salt.

This report is a summary of the physical processes, primary governing equations, solution approaches, and historic testing related to brine migration in geologic salt. Although most information presented in this report is not new, we synthesize a large amount of material scattered across dozens of laboratory reports, journal papers, conference proceedings, and textbooks. We present a mathematical description of the governing brine flow mechanisms in geologic salt. We outline the general coupled thermal, multi-phase hydrologic, and mechanical processes. We derive these processes' governing equations, which can be used to predict brine flow. These equations are valid under a wide variety of conditions applicable to radioactive waste disposal in rooms and boreholes excavated into geologic salt.
Date: March 1, 2013
Creator: Kuhlman, Kristopher L. & Malama, Bwalya
System: The UNT Digital Library
Building America Expert Meeting: Combustion Safety (open access)

Building America Expert Meeting: Combustion Safety

This is a meeting overview of 'The Best Approach to Combustion Safety in a Direct Vent World', held June 28, 2012, in San Antonio, Texas. The objective of this Expert Meeting was to identify gaps and barriers that need to be addressed by future research, and to develop data-driven technical recommendations for code updates so that a common approach for combustion safety can be adopted by all members of the building energy efficiency and code communities.
Date: March 1, 2013
Creator: Brand, L.
System: The UNT Digital Library