Renewable Energy

  • Wind turbine bat mortality Featured Article Wind turbine bat mortality Wind turbine bat mortality

    Wind turbine bat mortality is a significant adverse impact of large scale wind energy development. Wind energy has become an increasingly important sector of the renewable... More »

  • Photovoltaic energy valuation model Featured Article Photovoltaic energy valuation model Photovoltaic energy valuation model

    Photovoltaic Energy Valuation Model Sandia National Laboratories in collaboration with Solar Power Electric™ has developed PV ValueTM, an electronic form to... More »

  • Biomass Featured Article Biomass Biomass

    Biomass is a term in ecology for the  mass of living organisms in a given ecosystem.  Biomass can refer to the living stock of species in a given habitat, but can... More »

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Wind Energy and Wind Turbines Last Updated on 2014-11-30 21:43:17 Since 1999 the United States’ installed capacity of wind-produced electricity has grown from 2,000 mW to 28,635 mW, which is enough energy to power the equivalent of more than 6.5 million homes.[1] A functioning turbine can provide electricity directly to a building or other application as a “stand-alone,” or “off-grid” system, or it can be connected to the transmission grid.[2] Hybrid systems can combine wind, solar, and, for example, a diesel or biogas electric generator to provide holistic energy security for off-grid systems.[3] A small wind turbine is one that generates 100 kilowatts (“kWs”)[4] or less, and is generally used to produce clean, emissions-free power for individual homes, farms and businesses.[5]  As compared to large commercial turbines that may be 300 feet tall and are capable of producing several megawatts... More »
Hydroelectricity Last Updated on 2014-11-30 21:32:21 Hydroelectricity is electricity generated by converting the kinetic energy of falling or flowing water. It is considered the most widely installed form of renewable energy, although most large dams have a finite lifetime unless dredging of silt is periodically conducted. Hydroelectricity has and has a considerably lower output level of the greenhouse gas carbon dioxide than fossil fuel powered energy plants, and less life cycle greenhouse gas impact than solar power. Furthermore, the ecological impacts of hydropower is arguably greater than any form of energy production, due to the large footprint of biological impact of reservoirs and other needed developed areas. Worldwide, an installed capacity of 777 Gigawatts was catalogued in the year 2006, sufficient to supply one fifth of the world power supply. Since most of the prime locations for hydroelectric power have been tapped, the... More »
Climate Literacy- The Essential Principles of Climate Sciences Last Updated on 2014-11-15 15:52:27 View online here or download the PDF: High Resolution (14.67MB) or Low Resolution (2.92MB) If you would like more detailed coverage of this topic please see The Climate Literacy Handbook Climate Science Literacy is an understanding of your influence of climate and climate's influence on you and society. understands the essential principles of Earth's climate system, knows how to assess scientifically credible information about climate, communicates about climate and climate change in a meaningful way, and is able to make informed and responsible decisions with regard to actions that may affect climate. During the 20th century, Earth's globally averaged surface temperature rose by approximately 1.08°F (0.6°C). Additional warming of more than 0.25°F (0.14°C) has been measured since 2000. Though the total increase may seem small, it... More »
Biomass Last Updated on 2014-09-30 22:09:21 Biomass is a term in ecology for the  mass of living organisms in a given ecosystem.  Biomass can refer to the living stock of species in a given habitat, but can also refer to a harvested subset or to a decaying subset (especially in the case of forest floor detritus). Biomass may refer to the total mass of all species within the study area, and is thus sometimes called community biomass; but biomass may also refer to a taxonomic subset. Biomass can be expressed as the average mass per unit area or unit volume, or simply as the total mass in the community. Plants characteristically comprise the greatest part of the biomass of terrestrial system. In the animal kingdom, iIronically, the smallest creatures in an ecosystem typically represent the largest quantity of its biomass. It is important to note that the relative biomass species mix may change considerably from season... More »
Biomass Crop Assistance Program (BCAP): Status and Issues Last Updated on 2014-06-11 15:55:19 Summary The Food, Conservation, and Energy Act of 2008 (P.L. 110-246, 2008 Farm Bill) created the Biomass Crop Assistance Program (BCAP). The two main purposes of BCAP are: (1) to support the establishment and production of eligible crops for conversion to bioenergy in selected areas: and (2) to assist agricultural and forest land owners and operators with collection, harvest, storage, and transportation of eligible material for use in a biomass conversion facility. BCAP is intended to assist with the bioenergy industry’s hurdle of continuous biomass availability. The U.S. Department of Agriculture’s (USDA) Farm Service Agency (FSA) implemented one portion of BCAP—the Collection, Harvest, Storage, and Transportation (CHST) matching payment program—on June 11, 2009, through a Notice of Funds Availability in the Federal Register. The partial implementation... More »