Using Renewable Hybrid Power Systems to Meet Off-Grid Community and Commercial Energy Needs

submitted by: RASEIBoulder
Summary: Diesel generators are the traditional means by which people generate electricity in remote locations. Throughout the world, there are many thousands of off-grid communities, industrial sites, and government facilities relying entirely on diesel generated electricity. At $4/gallon, the fuel component alone of diesel-generated electricity is high, about $0.30/kWh. Some remote locations pay over $8/gallon or $0.60/kWh. With diesel fuel prices projected to rise even higher in the long...

Photo-Physics and Renewable Energy Applications of Single-Walled Carbon Nanotubes

submitted by: RASEIBoulder
Summary: Single-walled carbon nanotubes (SWNTs) are two-dimensionally confined quantum wires that have the potential to impact a variety of renewable energy applications. SWCNTs have several fundamental properties that make them attractive for sustainable energy conversion technologies, including high electron and hole mobilities, size-tunable ionization potentials and electron affinities in an energy range relevant to many photovoltaic devices, and optical transitions in the visible and...

Opportunities and Challenges of Offshore Wind Energy

submitted by: RASEIBoulder
Offshore wind power can contribute extensively to a clean, robust, and diversified U.S. energy portfolio. Capturing the Nation's large and inexhaustible offshore wind resource has the potential to mitigate climate change, improve the environment, increase energy security, and stimulate the U.S. economy. This seminar provides a broad understanding of the global offshore wind industry today and the associated technology challenges, economics, permitting procedures, and potential risks and...

Can Renewables Provide Big Energy in America's Electric Future?

submitted by: RASEIBoulder
Renewable energy sources currently provide about only about 10% of the nation’s electricity, with most of that coming from large hydro sources. Renewable energy sources are scattered around the country, with much of the best wind and solar resources located in remote locations. These sources also may have a big footprint compared to conventional sources. Finally, solar and wind are often described as intermittent due to their variable and uncertain output. As a consequence, it is often...

Liquid Crystal Based Variable Light Attenuation for Switchable Solar Heat Gain Coefficient Application

submitted by: RASEIBoulder
Energy loss through the windows remains a dominant obstacle in obtaining zero-energy buildings. In particular, for mixed climate environments, the solar heat gain coefficient of a window must be switchable to control the amount of solar heating in the winter and summer seasons. Furthermore, it is desirable for the system not to consume energy from the grid and operate in an autonomous way. Finally, the system must be scalable and cost effective to retrofit existing windows. In this talk, we...

Search for Rare Earths, Key Materials for Energy Innovation

submitted by: RASEIBoulder
Rare earth minerals are difficult and expensive to mine. And like most mining activities, doing so results in environmental damage, particularly because the ores from which these metals are extracted can be radioactive. Chinese mines have produced rare earths at a much lower cost, forcing competitors to shut down in recent years and creating a near monopoly. Japan is developing technology to improve recycling of some rare earths from discarded electronic products. And it is seeking...

Clean Energy and the Environment in America: The Colorado Story

submitted by: RASEIBoulder
The Center’s Director, Bill Ritter, was elected as Colorado’s 41st governor in 2006 - the first Colorado-born governor in more than 35 years. He quickly established Colorado as a national and international leader in clean energy by creating a New Energy Economy and tripling the state’s renewable energy portfolio. In a state with substantial fossil energy as well as renewable energy resources, Gov. Ritter created policies that balanced energy production with protection of air, land,...

Addressing the Challenge of Truly Large Scale Photovoltaics

submitted by: RASEIBoulder
Addressing the Challenge of Truly Large Scale Photovoltaics: the Industrial and Thermodynamic Potentials of Organic Solar Cells In order for photovoltaic systems to ultimately provide a considerable fraction of the world’s energy needs they will need to meet a number of stringent performance metrics regarding their cost, efficiency, and robustness. In addition, they will need to be manufactured with very high throughput methods in order to realize the enormous production scales...

Feasibility Of Predominant Wind And Solar Energy Over The 48 United States

submitted by: RASEIBoulder
It is widely believed that wind and solar power are too variable in time to supply a large percentage of energy needs. This perception is based on wind and solar energy production over small domains, but is it true for a large domain? A study was conducted to determine the resource availability of wind and solar energy over the 48 US states. A meteorological assimilation model was used to estimate hourly wind and solar resources for three years – 2006 through 2008. Geographic data were...

Smart Materials for Architecture and Renewable Energy

submitted by: RASEIBoulder
The rapid developments in molecular sciences like nanotechnology, self-organizing molecular systems and biomaterials generate a wealth of new materials and functions. In comparison to electronics and medical sciences, the application of these new materials in architecture and civil engineering remains somewhat underexposed. It is our opinion that new functionalities in optics, responsive mechanics, sensing and adjustable permeation for gases and water might add to new opportunities in...