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DOE Fall 2010 Technical Assistance Webinars |
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Written by Steve Heising
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Sep 03, 2010 at 10:33 AM |
DOE Announces Fall 2010 Technical Assistance Program WebinarsSeptember 02, 2010The U.S. Department of Energy today announced the Technical Assistance Program (TAP) will be hosting a series of Webinars that will support projects funded under the American Recovery and Reinvestment Act under the State Energy Program (SEP) and Energy Efficiency and Conservation Block Grant Program (EECBG). The Webinar series will address key issues and challenges that state, local, and tribal energy practitioners may face when implementing their projects. MORE >
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Last Updated ( Sep 03, 2010 at 10:35 AM )
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Read more...
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When You Can't Afford the Wrong Choice |
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Written by Steve Heising
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Aug 31, 2010 at 01:26 PM |
Nexxus Lighting's Array LED light bulbs are fully dimmable, energy efficient, light weight direct replacements for incandescent and halogen bulbs. Utilizing a unique LED package, patented designs and a patent pending thermal management system, Array LED lights deliver industry leading lumen per watt performance and can last over 50,000 hours. The product line includes R30, R16, MR16, GU10, G4 and PAR38 lamp types that are available in a wide variety of beam angles and color temperatures.
Visit www.arraylighting.com for more information.
We expect the Par 38 to cost ~$79.95. however, this will qualify for a $35 Rebate from Xcel Energy. CRI and Warranty are not as good as MSi iPAR-38. Click here for more information.
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Last Updated ( Aug 31, 2010 at 03:34 PM )
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Color Rendering of Light Sources |
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Written by Steve Heising
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Aug 29, 2010 at 11:03 PM |
NIST Physics Laboratory Optical Technology Division
Color Rendering of Light Sources
Figure 1
A Color Quality Scale (CQS) is being developed at NIST with close contacts with the lighting industry and the CIE to address the problems of the CIE Color Rendering Index (CRI) for solid-state light sources and to meet the new needs in the lighting industry and consumers for communicating color quality of lighting products, The CQS evaluates several aspects of the quality of the color of objects illuminated by a light source. This metric involves several facets of color quality, including color rendering, chromatic discrimination, and observer preferences. The method for calculating the CQS is derived from modifications to the method used in the CRI. Though simulations support for the appropriateness and usefulness of the proposed metric, visual tests are being planned. The results of the vision experiments will be used to improve upon and eventually verify the CQS, which is to be proposed as a new international standard. READ MORE>
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Last Updated ( Sep 03, 2010 at 10:49 AM )
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Some Lighting Retrofit Case Studies |
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Written by Xcel Energy Business Solutions Center
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Aug 24, 2010 at 12:08 PM |
Lighting Efficiency, Prescriptive, Custom and Design all programs designed to save energy and monthly costs. Rebates are typically capped at 50% of Project costs and a 1 year payback.
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New solar energy conversion process could revamp solar power production |
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Written by Steve Heising
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Aug 20, 2010 at 09:15 AM |
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New solar energy conversion process could revamp solar power production.
August 2, 2010
PHYSORG.COM
Stanford engineers have figured out how to simultaneously use the light and heat of the sun to generate electricity in a way that could make solar power production more than twice as efficient as existing methods and potentially cheap enough to compete with oil.
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Sustainability Blog 
Xcel Energy's Campus Lofts Case Study duration: 4:4 
