Tag archives for solar

Last year President Obama launched Power Africa, an initiative to double access to power in sub-Saharan Africa, where more than two-thirds of the population is without electricity.  In a parallel move, the House Foreign Affairs Committee leadership introduced the Electrify Africa Act to encourage access to electricity in sub-Saharan Africa.  Since then, there has been…

Maybe the electric utilities are right, for a change. Maybe net-metering—the ability to run your kilowatt-hour meter backwards, with solar panels on your roof or a windmill in your backyard–is not the best policy for America, or for Americans. (See related, “As Solar Power Grows, Dispute Flares Over U.S. Utility Bills.”) But the utilities’ populist…

Conventional wisdom says that if you put solar panels on your roof in the Northern Hemisphere, you should point them within 30 degrees of true south to generate the most energy in the course of a year. But a new study by Pecan Street Research Institute, an Austin, Texas-based research and development organization, suggests that…

Comments Off on Solar Researchers Dig Deeper Into Snow Issue

Our recent story on a net-zero town hall in Upstate New York prompted a question about what impact snow might have on the solar panels that are installed, at a slight angle, on the building’s flat roof. This is a darn good question – and it turns out the scientists at Michigan Technological University’s Keweenaw Research Center…

­­In northern New Mexico the sun shines nearly every day of the year. If solar energy is going to be viable anywhere, it will be here—and a small electric cooperative in historic Taos is taking advantage of it. In addition to supporting new solar projects in its service area, Kit Carson Electric Cooperative is offering…

By John Perlin Many people believe that solar energy is a twentieth century phenomenon, untried and untested. But I discovered through writing my new book Let It Shine: The 6000-Year Story of Solar Energy that houses have been designed since Neolithic times to scoop up sunlight in winter; that over the last three thousand years people have used solar concentrators…

In this installment of Digital Diversity, Gwen Kidera – Project Associate at S3IDF (Small Scale Sustainable Infrastructure Development Fund) – explains how their non-profit organisation provides underserved communities with Integrated Energy Centre carts (IECs) equipped with reliable solar powered lamps and mobile charging stations. Access to light and mobile technology improves the quality of life…

  Former White House Chief of Staff Rahm Emanuel’s now famous comment, “Never let a serious crisis to go to waste,” could not have been more true of Hurricane Sandy, which was a harbinger of the costly destructive power of climate change.  Sandy made clear that willful ignorance of climate science and inaction is simply…

Comments Off on With a New Look, French Teams Take Top Prizes in Shell Eco-marathon Europe

For several years running, French engineering students from two neighboring Loire Valley schools, Polytech Nantes and La Joliverie, have shared engineering and effort to build rocket-shaped vehicles that captured top prizes at Shell Eco-marathon Europe fuel efficiency race. But the students began to feel there was something lacking in their cars’ perennially award-winning profile. “It…

Comments Off on Purdue Solar Racing Seeks to Boost Sun Intensity

Zack Lapetina of Purdue University explains how the Purdue Solar Racing team uses high-efficiency photovoltaic panels, and then adds intensifiers to increase the amount of sunlight the cars capture for energy in Shell Eco-marathon Americas student design competition. You can also read their blog about their journey here: Lighter and Sleeker for This Year’s Race.…