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FSEM 180 The numbers. Stephen Bradforth. It ’ s all about the numbers Can we do it, can we afford it, and what compromises do each of us, and our society have to make in each scenario?. How much can we do from sustainable sources?. Coming up in FSEM 180: http://photon.usc.edu/fyi180

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## FSEM 180 The numbers

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**FSEM 180 The numbers**Stephen Bradforth**It’s all about the numbers**Can we do it, can we afford it, and what compromises do each of us, and our society have to make in each scenario? How much can we do from sustainable sources?**Coming up in FSEM 180:**http://photon.usc.edu/fyi180 Tentative calendar for the semester. NEXT WEEK: Nuclear Power …then 2 weeks breather followed by… A mini-panel on undergraduate research on October 9 Your ideas for alternative energy – how do we assess?**200 billion kWh/yr for entire US population:**= 1.8 kWh/d per person Contribution of renewable energy**MacKay**“Without the hot air” conclusion of Ch. 3 From last week…Averaging your estimates of your personal care driving**OUR TEAMS**• Chris, Matt, Kyle, Robert (WIND) • Joanne, Jeannie, Shravi, Sarang (SOLAR) • Max, Laura, Amira, Michael (HYDRO) • Arthur, Nicole, Omar (GEOTHERMAL) What is the maximum reasonable sustainable energy production per person, per day from these alternatives?**SCE, along with other west coast utilities, was one of the**earliest to use Hydroelectric Power for the rapidly growing population in the 1920s onward • Big Creek Project (SCE) • 1 GW peak total power to SCE • 14 million homes • ¼ kW each home = 1.5 kWh/d Hydro**Solar Concentrators**SEGS project in Mojave Desert (350 MW) – 0.5 kWh/d peak Solar Millenium AG received contract for new 1GW solar farm at Blythe in Sonoran Desert in 2010 but filed for bankruptcy at the end of 2011.**Personal usage and renewable supply based on estimates**Is the green stack reasonable? How do renewables stack up? 195180kWh/d**Comparing energy generation costs by type**12 10 8 6 4 2 0 Cost of producing electricity (cents / kWh) What about cost?**How many people are regularly on the USC campus?**Numbers from USC web site: Students: 37,000 Faculty 3,300 Staff 11,500 Outpatients/in patients at USC hospitals? personalized units**Team Game**The art of estimation**Solar**• Goal - to increase the electricity generated from solar power to 100%. Is it possible (enough land)? Can the campus (i.e. the student tuition) afford it? The assigned task – team pitch to USC President

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