03 Sep '11, 2am

An Idea for Inexpensive Electricity: Concentrated Solar Power 12 Miles above the Earth

Why use a tethered approach, 12 miles up? The stratosphere is a good place to collect solar energy. It is above 95% of the earth's atmosphere so there is much less of the atmosphere to absorb sunlight. There is no dust so the surfaces don't need cleaning. The winds are usually calm and there are no clouds, making the collection of solar power almost completely predictable. The plants can be placed near loads, reducing transmission cost and losses. The solar flux models indicate this approach will work as far north as Stockholm, because of the greater solar intensity at that height. They occupy very little ground space compared to ordinary solar. The design calls for the collector surface to be pointed at the sun, so there is no cosine loss, a loss that affects ground-based solar power. If collecting solar energy in the stratosphere works, it scales to human energy needs. I...

Full article: http://www.theoildrum.com/node/8323

Tweets

EPIA report says #solar #PV electricity can be ...

epia.org 05 Sep '11, 12pm

Brussels, 31 January 2011 – Today, the European Commission released a communication titled “Renewable Energy: Progressing ...

vogt solar completes its first solar power plants in UK with a total capacity ...: “Close to the old cooling tow...

vogt solar completes its first solar power plan...

renewableenergymagazine.com 06 Sep '11, 9am

One of the recently commissioned plants is the Ebbsfleet Solar Farm, one of the biggest in the UK at 4.9 MWp. It is locate...

The Economics of Distributed Renewable Power — Why We Should Democratize the Electricity System, Part 2

The Economics of Distributed Renewable Power — ...

cleantechnica.com 02 Sep '11, 1am

Not all costs are covered in this levelized cost comparison.A grid with majority renewable power (from variable sources li...

Germany generated more than 20 percent of its #...

e360.yale.edu 02 Sep '11, 1am

01 Sep 2011: Green Energy Use in Germany Passes 20 Percent of Total Power Mix During the first half of 2011, Germany for t...

Dana's Law of Solar The amount of solar energy in use will double every 12-18 months for as far out as I can see. #avlgb

Dana's Law of Solar The amount of solar energy ...

renewableenergyworld.com 03 Sep '11, 12pm

The amount of solar energy in use will double every 12-18 months for as far out as I can see. It's important to put down a...

Energia solar do espaço: a possibilidade pelo v...

theoildrum.com 03 Sep '11, 1pm

The collector portion of the system must point toward the sun. That implies that the collectors must rotate once a year in...

Geothermal Plant Supplies ~20% of Hawaii’s Electricity

Geothermal Plant Supplies ~20% of Hawaii’s Elec...

cleantechnica.com 02 Sep '11, 1pm

Puna Geothermal Venture has a contract with Hawaii Electric & Light (HELCO) to supply the utility with 30 megawatts (MW) o...

20.8% of Germany's electricity now from renewab...

treehugger.com 06 Sep '11, 3pm

Mongabay does a good job summarizing the history of Germany's renewable energy efforts: Over the past decade, wind and bio...

#AtlMMF Maker Profile #34: Electric S-10 - A ’9...

evalbum.com 03 Sep '11, 6pm

20 Energizer GC8, 6.00 Volt, Lead-Acid, Flooded Individual screw caps, sourced by Johnson Controls / US Battery. 105 minut...

Solar

sma.de 11 Sep '11, 12pm

SUNNY BOY SUNNY BOY 3000TL / 4000TL / 5000TL SUNNY BOY 3000TL / 4000TL / 5000TL with Reactive Power Control SUNNY BOY 3300...

Is Wind Electricity Right for You? | Windustry:...

windustry.org 03 Sep '11, 11pm

The Bergey Excel-S is a popular small wind turbine. Home Power magazine publishes an annual Wind Turbine Guide for conside...

Big Island of Hawaii Gets 20% of Its Electricit...

ecogeek.org 02 Sep '11, 6pm

The Puna Geothermal Venture is run by Ormat Technologies and is located in the Mt. Kilauea East Rift zone. The plant has f...

Solar, Wind, and Human Powered Trike Goes Around the World

Solar, Wind, and Human Powered Trike Goes Aroun...

cleantechnica.com 03 Sep '11, 2pm

CleanTechnica's authors are supported by a revenue-sharing agreement with the company that operates CleanTechnica, Importa...

America would save $3.9B/year in electric by switching from incandescent light bulbs. Why is there so much resistance?

America would save $3.9B/year in electric by sw...

seventhgeneration.com 06 Sep '11, 3pm

This is the Inkslinger responding to say that while I understand the concern about the mercury in compact fluorescent ligh...

Low Cost Solar Power Gets $145 Million Boost from SunShot Initiative

Low Cost Solar Power Gets $145 Million Boost fr...

cleantechnica.com 04 Sep '11, 6pm

Another big chunk of funding will go to overcome cost and efficiency barriers that are keeping promising prototypes for ne...