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Power produced from hot dry rock geothermal resources: a case study for the Imperial Valley, California

Description: The case study described here concerns an HDR system which provides geothermal fluids for a hypothetical electric plant located in California's Imperial Valley. Primary concern is focused on the implications of differing drilling conditions, as reflected by costs, and differing risk environments for the potential commercialization of an HDR system. Drilling costs for best, medium and worst drilling conditions are taken from a recent study of drilling costs for HDR systems. Differing risk enviro… more
Date: December 1, 1979
Creator: Cummings, R. G.; Morris, G. E.; Arundale, C. J. & Erickson, E. L.
Partner: UNT Libraries Government Documents Department
open access

Railroad electrification in America's future: an assessment of prospects and impacts. Final report

Description: Such considerations as the level of traffic, the relative financial health of individual railroads, the capacity of the associated supply and engineering/construction industries, and the logical connecting points at classifying yards, as well as the national interest value of creating a continuous system, continental in scope, were used to construct a scenario for railroad electrification that closely approximates how an electrification program might be implemented. For the economic reasons cit… more
Date: January 1, 1980
Creator: White, R. K.; Yabroff, I. W.; Dickson, E. M.; Zink, R. A.; Gray, M. E. & Moon, A. E.
Partner: UNT Libraries Government Documents Department
open access

Sharing the burden of climate change stabilization: An energysector perspective

Description: In this paper we discuss long-term least cost CO2stabilization scenarios based on the SRES AIM A1B scenario in the contextof an international burden-sharing regime. Starting from a stabilizationtarget, regional emission caps are formulated dynamically on the basis ofpast emissions. With these regional caps, the cost-optimal supply fuelmix in the energy sector in the four SRES world regions is calculated,and lower bounds on the volume of traded carbon are estimated. Theallocation scheme provides… more
Date: May 1, 2006
Creator: Wagner, Fabian & Sathaye, Jayant
Partner: UNT Libraries Government Documents Department
open access

Wind turbine reliability :understanding and minimizing wind turbine operation and maintenance costs.

Description: Wind turbine system reliability is a critical factor in the success of a wind energy project. Poor reliability directly affects both the project's revenue stream through increased operation and maintenance (O&M) costs and reduced availability to generate power due to turbine downtime. Indirectly, the acceptance of wind-generated power by the financial and developer communities as a viable enterprise is influenced by the risk associated with the capital equipment reliability; increased risk,… more
Date: March 1, 2006
Creator: Walford, Christopher A. (Global Energy Concepts. Kirkland, WA)
Partner: UNT Libraries Government Documents Department
open access

Irrigation market for solar-thermal parabolic-dish systems

Description: The potential size of the onfarm-pumped irrigation market for solar thermal parabolic dish systems in seven high-insolation states is estimated. The study is restricted to the displacement of three specific fuels: gasoline, diesel and natural gas. A model was developed to estimate the optimal number of parabolic dish modules per farm based on the minimum cost mix of conventional and solar thermal energy required to meet irrigation needs. Results indicate that the near-term market for such syste… more
Date: September 1, 1981
Creator: Habib-agahi, H. & Jones, S.C.
Partner: UNT Libraries Government Documents Department
open access

Proposed changes in interest rate criteria and the amortization method for repayment of federal hydro-power investments

Description: Where review of government policies followed in charging interest on unrepaid investment (32% of total program cost) disclosed those interest rates were less than cost to the US Treasury to borrow funds to finance federal programs, IG recommended consideration of policy changes to recover interest costs on new project more closely to true costs, i.e., perhaps use of a weighted average over entire construction period. Also, a policy to amortize all unrepaid investments on a simultaneous basis sh… more
Date: January 26, 1981
Partner: UNT Libraries Government Documents Department
open access

Economic factors relevant for electric power produced from hot dry rock geothermal resources: a case study for the Fenton Hill, New Mexico, area

Description: The case study described here concerns an HDR system which provides geothermal fluids for a hypothetical electric plant located in the Fenton Hill area in New Mexico's Jemez Mountains. Primary concern is focused on the implications of differing drilling conditions, as reflected by costs, and differing risk environments for the potential commercialization of an HDR system. Drilling costs for best, medium and worst drilling conditions are taken from a recent study of drilling costs for HDR system… more
Date: December 1, 1979
Creator: Cummings, R. G.; Morris, G.; Arundale, C. J. & Erickson, E. L.
Partner: UNT Libraries Government Documents Department
open access

National Utility Financial Statement model (NUFS). Volume II of III: user's guide. Final report

Description: This volume is a User's Guide for the National Utility Financial Statement Model (NUFS). This is the second of three volumes describing NUFS provided by ICF Incorporated under contract DEAC01-79EI10579. The three volumes are entitled: Model Overview and Description; User's Guide; and Software Description. This volume describes each necessary input file, discusses user options, and describes the job stream necessary to run the model.
Date: October 29, 1981
Partner: UNT Libraries Government Documents Department
open access

National Utility Financial Statement model (NUFS). Volume I of III: Model overview and description. Final report

Description: The National Utility Financial Statement (NUFS) model which takes the output for the electric utility sector from the Midterm Energy Forecasting System (MEFS) model and forecasts electric utility financial statements is described. NUFS forecasts separately for public and investor owned utilities, the following tables for each region on an annual basis: income statement; balance sheet; sources and uses of funds; development of revenue requirement on an annual basis; reconciliation of tax expense… more
Date: October 29, 1981
Partner: UNT Libraries Government Documents Department
open access

National Utility Financial Statement model (NUFS). Volume III of III: software description. Final report

Description: This volume contains a description of the software comprising the National Utility Financial Statement Model (NUFS). This is the third of three volumes describing NUFS provided by ICF Incorporated under contract DEAC-01-79EI-10579. The three volumes are entitled: model overview and description, user's guide, and software guide.
Date: October 29, 1981
Partner: UNT Libraries Government Documents Department
open access

Parametric sensitivity study for solar-assisted heat-pump systems. Final report

Description: A sensitivity study is performed of the engineering and economic parameters affecting life-cycle costs for solar-assisted heat pump systems. The change in energy usage resulting from each engineering parameter varied has been developed from computer simulations, and is compared with results from a stand-alone heat pump system. Three geographical locations are considered: Washington, DC, Fort Worth, TX, and Madison, WI. Results indicate that most engineering changes to the systems studied do not… more
Date: July 1, 1981
Creator: White, N.M. & Morehouse, J.H.
Partner: UNT Libraries Government Documents Department
open access

Comparison of financing costs for wind turbine and fossil powerplants

Description: This paper compares the financing costs of wind turbine powerplants with those of fossil powerplants. The goal of this examination is to determine the extent to which these costs differ and what the sources of such differences may be. The discussion is organized in the following fashion. Section 2 introduces basic terminology and concepts from finance, as they apply in the powerplant setting. Section 3 reviews available data from a variety of sources to estimate the magnitude of the variables i… more
Date: February 1, 1995
Creator: Kahn, E.
Partner: UNT Libraries Government Documents Department
open access

Wind turbine reliability : understanding and minimizing wind turbine operation and maintenance costs.

Description: Wind turbine system reliability is a critical factor in the success of a wind energy project. Poor reliability directly affects both the project's revenue stream through increased operation and maintenance (O&M) costs and reduced availability to generate power due to turbine downtime. Indirectly, the acceptance of wind-generated power by the financial and developer communities as a viable enterprise is influenced by the risk associated with the capital equipment reliability; increased risk,… more
Date: November 1, 2004
Partner: UNT Libraries Government Documents Department
open access

Capture of Heat Energy from Diesel Engine Exhaust

Description: Diesel generators produce waste heat as well as electrical power. About one-third of the fuel energy is released from the exhaust manifolds of the diesel engines and normally is not captured for useful applications. This project studied different waste heat applications that may effectively use the heat released from exhaust of Alaskan village diesel generators, selected the most desirable application, designed and fabricated a prototype for performance measurements, and evaluated the feasibili… more
Date: December 31, 2008
Creator: Lin, Chuen-Sen
Partner: UNT Libraries Government Documents Department
open access

PTC, ITC, or Cash Grant? An Analysis of the Choice Facing Renewable Power Projects in the United States

Description: Renewable power technologies are inherently capital-intensive, often (but not always) with relatively high construction costs and low operating costs. For this reason, renewable power technologies are typically more sensitive to the availability and cost of financing than are natural gas power plants, for example. In the United States, the bulk of renewable project finance in recent years has been provided by 'tax equity investors' (typically large investment banks and insurance companies) who … more
Date: March 11, 2009
Creator: Bolinger, Mark; Wiser, Ryan; Cory, Karlynn & James, Ted
Partner: UNT Libraries Government Documents Department
open access

Financing Strategies for Nuclear Fuel Cycle Facility

Description: To help meet our nation’s energy needs, reprocessing of spent nuclear fuel is being considered more and more as a necessary step in a future nuclear fuel cycle, but incorporating this step into the fuel cycle will require considerable investment. This report presents an evaluation of financing scenarios for reprocessing facilities integrated into the nuclear fuel cycle. A range of options, from fully government owned to fully private owned, was evaluated using a DPL (Dynamic Programming Languag… more
Date: December 1, 2005
Creator: Shropshire, David & Chandler, Sharon
Partner: UNT Libraries Government Documents Department
open access

Economics of producing methane (exclusively) from geopressured aquifers along the Gulf Coast

Description: The purpose of this report was to estimate the cost of producing methane (natural gas) from geopressured aquifers inland from and along the coast of the Gulf of New Mexico. No other economic values of the geopressured brines were considered for exploitation. There were several component tasks of such an overall analysis which had to be completed in order to arrive at the final conclusion. (1) An estimate of the reservoir parameters of the geopressured aquifers; their areal extent, net thickness… more
Date: March 1, 1978
Creator: Doscher, Todd M.; Osborne, R.N.; Wilson, T. & Rhee, S.W.
Partner: UNT Libraries Government Documents Department
open access

Costs of U.S. Oil Dependence: 2005 Update

Description: For thirty years, dependence on oil has been a significant problem for the United States. Oil dependence is not simply a matter of how much oil we import. It is a syndrome, a combination of the vulnerability of the U.S. economy to higher oil prices and oil price shocks and a concentration of world oil supplies in a small group of oil producing states that are willing and able to use their market power to influence world oil prices. Although there are vitally important political and military dim… more
Date: March 8, 2005
Creator: Greene, D. L.
Partner: UNT Libraries Government Documents Department
open access

The National Fuel End-Use Efficiency Field Test: Energy Savings and Performance of an Improved Energy Conservation Measure Selection Technique

Description: The performance of an advanced residential energy conservation measure (ECM) selection technique was tested in Buffalo, New York, to verify the energy savings and program improvements achieved from use of the technique in conservation programs and provide input into determining whether utility investments in residential gas end-use conservation are cost effective. The technique analyzes a house to identify all ECMs that are cost effective in the building envelope, space-heating system, and wate… more
Date: January 1, 1991
Creator: Ternes, M. P.
Partner: UNT Libraries Government Documents Department
open access

The Potential For Energy Efficiency In The State of Iowa

Description: The purpose of this study was to do an initial estimate of the potential for energy savings in the state of Iowa. Several methods for determining savings were examined, including existing programs, surveys, savings calculators, and economic simulation. Each method has advantages and disadvantages, trading off between detail of information, accuracy of results, and scope. This paper concentrated on using economic simulation (the NEMS model (EIA 2000a)) to determine market potential for energy sa… more
Date: December 5, 2001
Creator: Hadley, SW
Partner: UNT Libraries Government Documents Department
open access

TAFV Alternative Fuels and Vehicles Choice Model Documentation

Description: A model for predicting choice of alternative fuel and among alternative vehicle technologies for light-duty motor vehicles is derived. The nested multinomial logit (NML) mathematical framework is used. Calibration of the model is based on information in the existing literature and deduction based on assuming a small number of key parameters, such as the value of time and discount rates. A spreadsheet model has been developed for calibration and preliminary testing of the model.
Date: July 27, 2001
Creator: Greene, D. L.
Partner: UNT Libraries Government Documents Department
open access

Property Tax Assessments as a Finance Vehicle for Residential PV Installations: Opportunities and Potential Limitations

Description: Readily accessible credit has often been cited as a necessary ingredient to open up the market for residential photovoltaic (PV) systems. Though financing does not reduce the high up-front cost of PV, by spreading that cost over some portion of the system's life, financing can certainly make PV systems more affordable. As a result, a number of states have, in the past, set up special residential loan programs targeting the installation of renewable energy systems and/or energy efficiency improv… more
Date: February 1, 2008
Creator: Bolinger, Mark A.
Partner: UNT Libraries Government Documents Department
open access

Impact of Federal tax policy and electric utility rate schedules upon the solar building/electric utility interface. Executive summary

Description: An analysis is performed to show that a utility solar-passive strategy can be used rather effectively in aiding the utility to obtain more efficient load factors and lower costs. The objectives are to determine the impact of active and passive solar energy designs for space conditioning and hot water heating for the residential sector upon the diurnal and annual load curves for several utilities, to assess the effect of present utility pricing policies, and to examine alternative pricing scheme… more
Date: October 1, 1978
Creator: Feldman, S. L.; Wirtshafter, R. M.; Abrash, M.; Anderson, B.; Sullivan, P. & Kohler, J.
Partner: UNT Libraries Government Documents Department
open access

Stafford Loan Interest Rate Reduction: Background and Issues

Description: This report provides a brief overview of selected terms and conditions of Stafford Loans, characteristics of borrowers, and a description of how reduced rates would compare with current terms and conditions.
Date: January 16, 2007
Creator: Smole, David P.
Partner: UNT Libraries Government Documents Department
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