Battery cost, calendar life, and cycle life are three important challenges for those commercializing plug-in hybrid electric vehicles; battery life is sensitive to temperature and solar loading.

NREL worked with GM and demonstrated equivalent performance in the Saturn Vue Belt Alternator Starter (BAS) hybrid vehicle whether running with its stock batteries or a retrofit ultracapacitor system.

This presentation outlines NREL's multi-physics simulation study to characterize an internal short by linking and integrating electrochemical cell, electro-thermal, and abuse reaction kinetics models.

The conclusions from this report are: (1) hydrogen has several important advantages over competing technologies, including - very high storage energy density (170 kWh/m{sup 3} vs. 2.4 for CAES and 0.7 for pumped hydro) which allows for potential economic viability of above-ground storage and relatively low environmental impact in comparison with other technologies; and (2) the major disadvantage of hydrogen energy storage is cost but research and deployment of electrolyzers and fuel cells may reduce cost significantly.

This presentation discusses the water impacts of the electricity sector. Nationally, the electricity sector is a major end-user of water. Water issues affect power plants throughout the nation.

This presentation is about the Early Fuel Cell Market Deployments: ARRA and Combined (IAA, DLA, ARRA). Quarter 1 2012 Composite Data Products - Deployment March 8, 2012.

This analysis evaluates several operational benefits of electricity storage, including load-leveling, spinning contingency reserves, and regulation reserves. Storage devices were simulated in a utility system in the western United States, and the operational costs of generation was compared to the same system without the added storage. This operational value of storage was estimated for devices of various sizes, providing different services, and with several sensitivities to fuel price and other factors. Overall, the results followed previous analyses that demonstrate relatively low value for load-leveling but greater value for provision of reserve services. The value was estimated by taking the difference in operational costs between cases with and without energy storage and represents the operational cost savings from deploying storage by a traditional vertically integrated utility. The analysis also estimated the potential revenues derived from a merchant storage plant in a restructured market, based on marginal system prices. Due to suppression of on-/off-peak price differentials and incomplete capture of system benefits (such as the cost of power plant starts), the revenue obtained by storage in a market setting appears to be substantially less than the net benefit provided to the system. This demonstrates some of the additional challenges for storage deployed …

This presentation accompanies Phase 2 of the Western Wind and Solar Integration Study, a follow-on to Phase 1, which examined the operational impacts of high penetrations of variable renewable generation on the electric power system in the West and was one of the largest variable generation studies to date. High penetrations of variable generation can induce cycling of fossil-fueled generators. Cycling leads to wear-and-tear costs and changes in emissions. Phase 2 calculated these costs and emissions, and simulated grid operations for a year to investigate the detailed impact of variable generation on the fossil-fueled fleet. The presentation highlights the scope of the study and results.

Durability analysis results for lab bench fuel cell test data.

This presentation summarizes biological systems for hydrogen photoproduction.

This presentation discusses UV, temperature, and humidity test protocols for PV modules.

The goals of this project are to highlight the diverse approaches for enabling high renewable energy penetration; synthesize lessons on effective policies and programs and present avenues for action to energy ministers and other stakeholders.

This presentation discusses the development and deployment of Modular Solar Electric Power (MSEP) systems, the feasibility of application of existing binary power cycles to solar trough technology, and identification of next action items.

A presentation on acoustic noise measurement techniques for wind turbines.

Presented by Dan Arvizu at the 10th Annual Green Chemistry & Engineering Conference on June 29, 2006 in Washington, D.C.

Presentation offers strategies federal agency fleets can use to reduce petroleum consumption and build or gain access to alternative fuel infrastructure.

Presentation given by Dan Arvizu at the Center for Strategic and International Studies (CSIS) Symposium on Future Fuels on June 15, 2006

Presents an analysis of VRLA + ultracapacitor use as energy storage systems in mild hybrid vehicles.

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The objectives of this report are: (1) Analyze wind shear characteristics at tall tower sites for diverse areas in the central plains (Texas to North Dakota)--Turbines hub heights are now 70-100 m above ground and Wind measurements at 70-100+ m have been rare. (2) Present conclusions about wind shear characteristics for prime wind energy development regions.

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A pre-conference presentation for the AWEA WindPower 2006 Conference in Pittsburgh, PA, about increasing the deployment of wind energy.

Presents an analysis of hybridization and implications energy storage devices concerning fuel cell vehicles.

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