Space-Based Solar Power

a public discussion sponsored by the Space Frontier Foundation

Archive for the ‘Logistical Challenges to Space-Based Solar Power’ Category

Wireless Power Broadcast for Computers and Phones Anticipated!

Posted by Coyote on August 23, 2008

Power beaming is a critical for space-based solar power. It also would be nice if our laptops and cell phones didn’t need to be plugged in, becoming truly wireless.

Intel recently brought the concept closer to reality with a live demo illuminating a 60 watt bulb on stage at an annual meeting in San Francisco of the company’s developers. Their goal is simple, free computers and other devices from power cords.

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Posted in Environmental Challenges of Space-Based Solar Power, Logistical Challenges to Space-Based Solar Power, Scientific Challenges to Space-Based Solar Power, Space Solar Power news, Technical Challenges to Space-Based Solar Power | 7 Comments »

Space Solar Power Demo: WWWWW & H?

Posted by Coyote on January 12, 2008

It’s time to get busy again!

Our very good friend, Hu Davis, recently circulated some good questions regarding the who, what, when, where, why, and hows of demonstrating space solar power. He poses the questions from the perspectives of two groups; space solar power enthusiasts, and some NASA people who work the International Space Station (ISS). (Please note that like the rest of us, our friends at NASA-ISS are just brainstorming with us to see what help the ISS might be able to lend to advance space solar power concepts–there is no official NASA position or policy on any of this yet.)

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Posted in Space Solar Power news, Technical Challenges to Space-Based Solar Power, Logistical Challenges to Space-Based Solar Power, Scientific Challenges to Space-Based Solar Power, International Partnerships for Space-Based Solar Power, Study-Related | 96 Comments »

Space-Based Solar Power Interim Assessment (Release 0.1) is Published!

Posted by Coyote on October 10, 2007

Hello Everyone!

Click here for the “Interim Assessment!”

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Posted in Business Case to Space-Based Solar Power, Commercial Challenges to Space-Based Solar Power, Environmental Challenges of Space-Based Solar Power, International Partnerships for Space-Based Solar Power, Legal Challenges for Space-Based Solar Power, Logistical Challenges to Space-Based Solar Power, Political Challenges to Space-Based Solar Power, Scientific Challenges to Space-Based Solar Power, Space Solar Power news, Study-Related, Technical Challenges to Space-Based Solar Power | 74 Comments »

The Goal for 2050 and the Build Forward

Posted by Coyote on August 7, 2007

Enthusiasts and Skeptics,

To give you a basis for analysis, by 2050 the goal is to have forty or so concentrator-photovoltaic space-based solar power (SBSP) satellites in geostationary orbit, each broadcasting via microwave between 2-5 gigawatts of power to terrestrial electrical power grids, with 1-to-5 broadcast antennas that can beam power to as many locations.

This must be done using a sound business case. John Mankins calculates that this can be achieved by keeping the costs of delivery and assembly on orbit below $3,500 per kilogram–keeping the cost to customers below $0.10 per kilowatt/hour. This will drive robotic assembly and tug systems to pull these enormous structures from low orbits to geostationary. On orbit fueling stations will be required. Paul Werbos believes the best way to do this is to get launch costs down below $200 per kilogram.  But several other factors help make the business case. For example, if the price of other energy sources goes up it helps to close the business case for SBSP. Other factors include the efficiencies associated with solar collectors, energy conversion, antennas/rectennas, signal path loss, etc. Dennis Wingo and others have suggested that the first customers for space-based solar power will be international–in areas such as India and Japan where the price per kilowatt/hour is astronomical compared to the Americas or Europe. All of this goes into making the business case.

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Posted in Commercial Challenges to Space-Based Solar Power, International Partnerships for Space-Based Solar Power, Logistical Challenges to Space-Based Solar Power, Scientific Challenges to Space-Based Solar Power | 52 Comments »

“How to Build a Space Solar Power System”

Posted by Coyote on July 22, 2007

My friend Darel Preble sent a comment to a previous posting that included a paper entitled “How to Build a Space Solar Power System.”

I encourage you to read the paper available at the link above. Does it describe a viable way forward?

Posted in Logistical Challenges to Space-Based Solar Power, Technical Challenges to Space-Based Solar Power | 66 Comments »

 
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