A brief about Space based solar power generation.

1. Space Based Solar Power
The Way of the Future
Space-Based Solar
Power
(SBSP)
PRESENTED BY: HARUNNUR RASID
Electrical & Electronic Engineer
B.Sc in ELECTRICAL AND ELECTRONIC
ENGINEERING

2. Outline
• The Energetic Future
• The Alternatives
• Space Based Solar Power
• History
• Working principal
• The Benefits
• The Costs
• Conclusion
• Works Cited

3. The Energetic Future
• By 2050, the populationwill reach 9 billion
• Energy consumptionwill rise by 53% between
2008 and 2035
• Some estimate an increase of 300% by 2100
• Current methods will not be enough

4. The Alternatives
• Nuclear
– Very high initial costs and safety
• Natural Gas
– Emits small amounts of CO2 and safety
• Coal
– Environment
• Solar Power (Ground Based)
– Very inefficient

5. Future Energy Options Must Be…

6. Space-based solar power (SBSP) is the concept
of collecting solar power in space (using an
"SPS", that is, a "solar-power satellite" or a
"satellite power system") for use on Earth.
It has been in research since the early 1970s.
Space Based Solar Power

7. • Originally known as satellite solar-power system (SSPS), was first
described in November 1968.
• In 1973 Peter Glaser was granted U.S. patent for his method of
transmitting power over long distances using microwaves from a very
large antenna (up to one square kilometer) on the satellite to a much
larger one, now known as a rectenna, on the ground.
• Between 1978 and 1981, the US Congress authorized the Department
of Energy (DoE) and NASA to jointly investigate the concept.
• In 1997 NASA conducted its "Fresh Look" study to examine the modern
state of SBSP feasibility.
• On Nov 2, 2012, China proposed space collaboration with India in SBSP
History

8. Space Based Solar Power
• Energy concentratorMirror
• The satatlite
• Power then “beamed” to Earth by Rectenna

10. Rectenna
Image of a Rectenna in US with diameter of about half a mile
which is important as 95% of the microwave power is received
by rectennas.USreceives about 5000MW of power as a result.

11. Benefits
• No atmospheric effects
• Almost always in the light
How it would differ
Solar Intensity
1,366 W/m2 No Night Min Weather
Solar Intensity
1,000 W/m2 Night Loss Weather Loss
Space Solar
Ground Solar

12. Costs
• Have to get materials into space
• Incredibly expensive
• Infrastructure needs to be updated

13. Beaming Power
• Lasers or Microwaves
• Efficiency
• Special Receivers
• Safety
• Environmental Concerns

14. It does not look like this….

16. Conclusion
• In the future, the globe will need more energy.
• The solar energy available in space is literally
billions of times greater than we use today.
• Space solar power can completely solve our
energy problems long term.
• The sooner we start and the harder we work,
the shorter "long term" will be.

17. Parting Thought
• “We make the world we live in and shape our
own environment.” –Orison Swett Marden
• We need to act soon, but sometimes our little
actions that seem to do nothing make big
differences.

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