Solar Energy - Saved by the Sun 12. Amory Lovins Physicist Lives in Colorado Rockies Energy expert Ultimate goal His biggest project Helping the U.S. get completely off oil by 2040s U.S. energy policy keep wasting lots of energy import "energy"at whatever prices and whatever means are necessary keep stealing from our kids keep screwing up the climate Investment in energy Recognized as one of the most creative thinkers on energy use and misuse Private and public investments has shrunk in the last decades 5. What is this about? Reducing CO2 emissions Reducing effects of global climate change Reducing global warming Consequences Unexpected other cnditions Droughts Severe weather conditions Reducing individual carbon footprint Savings Payback 3. Solar cells Like a sandwich The more sunlight = more juice they produce Top = protection Middle = silicon (where action occurs) Bottom = base 1. Intro Innovative business models Chance to meet inapetitable human for energy Solar dancing Small electronic devices Increasing worldwide demand for electricity Important source after 70's oil crisis Can solar power produce enough electricity to meet the demands of energy of 21st century? 7. Needing for power Grid managers Intense heat waves = more electricity Needs to buy electricity from other places Peak use (A/C on) = blacouts Extreme winters = more heating Efforts to conserve energy Ask companies/municipalities to turn off 2. Kazmerski Threat of electruction - Pres. Carter Collector of solar history Solar enthusiastic Present when solar started in the US - President Carter 6. Alternative Energies Nuclear energy Fear over nuclear accidents

Virtually carbon-free Renewable: solar and solar Needs to get cheaper Don't have the nuclear's drawbacks 4. Solar power adoption Bill and Debi Lord Website and Podcast 4 the curious: MAINE SOLAR HOUSE Passionate advocates 4 solar power Solar houses Offers on-site tours to convert houses Solar electric panels For home uses Net metering Sells the surplus to the grid Solar hot water panels Phill Reavis Jr change = motivated by oil crisis Industrial designer Sommerville, MA 1st to go solar in the community Incentives to go solar (US) Phill pays less than a half Net metering Massachusetts = 50% off investment 14 states 1) Illinois / 2) Wisconsin / 3) Minnesota / 4) Florida / 5) California / 6) Nevada / 7) Massachusetts / 8) Maine / 9) New York / 10) Vermont / 11) Connecticut / 12) Maryland / 13) Delaware / 14) New Jersey 8. Solar Thermal Power Plant Powers 150,000 homes in Greater LA area occupy area bigger than NY Central Park largest solar power plant in the world 3h driving from LA Mojave Desert built 20 years ago = response energy crisis Kramer Junction Uses parabolic-shapped mirrors Uses synthetic oil Reaches up to 750 degrees Fahrenheit 0. About the movie Watched Jan. 14, 2015 To buy: shop.wgbh.org NOVA DVDs 2007 56 minutes ISBN: 978-1-59375-721-2 9. Germany Leader in solar cell production More and more renewable Walls of solar panels on the roads Hermann Scheer 80% of the people support the Clean Energy project National Renewable Energy Act ahead on schedule: close to 30% by 2020 Leading advocate 20% of renewable energy by 2020 cash incentives prices fixed for 20 years to build huge solar structures 50 cents to sell 20 cents to buy

11. Technologies Nano solar paint Nathan Lewis CalTech professor - nano technology Layer of something conductor of electricity Wires to transport energy Layer of the solar paint Uses titanium oxide (TiO2) Put a positively charged coat over the Lewis's paint to freed electrons Flexible solar sheeting More power than conventional panels Photovoltaic panels Solar heat panels Multijunction solar cell Several layers of light-absorbing materials miniature version of a conventional solar solar cell harness energy in different energy bands = more efficiency technology used in the robot that is being used in the Mars robot by NASA 10. Promising trend led by business SolarEdison Jigar Shah - CEO company and its investors pay the solar systems contractor promises to buy buy power over a long-term contract Whole Foods Market Solar panels complements but not replaces energy from the grid Jennifer McDonnel - green missions specialist Roof covered with solar panels Solar provides only 15% of the year round store needs The panels supplies from 50%-100% daylight needs Daylight fares are the most expensive ones Fixed prices for 20 years Because of that - prices are predictable 13. Final considerations California's plan to get solar panels on a million roofs Solar power + wind (2007) less than 1% U.S. need to achieve 20-30% of solar power + other renewables to significantly reduce CO2 emissions Is this target realistic? (20%-30% solar) Sterling Burnett Energy Policy Analyst Don't think 20-25 y it is going to be 20% Larry Kazmerski National Renewable Energy Lab Fairly certain that it is by 2025 - 25% from solar