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Climate Corps Bay Area 2012 Training. Day 3. Recap. Questions from yesterday Logistics for today. Energy Concepts. Kif Scheuer. What is Energy?. The capacity to do work comes in many forms To do work energy converts from one form to another. How Hard Does Kif Work?.

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Climate Corps Bay Area 2012 Training


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    Presentation Transcript
    1. Climate Corps Bay Area2012 Training Day 3

    2. Recap Questions from yesterday Logistics for today

    3. Energy Concepts KifScheuer

    4. What is Energy? • The capacity to do work • comes in many forms • To do work energy converts from one form to another

    5. How Hard Does Kif Work? • Kif climbs a ladder in 10 seconds. • Kif’s rate of work = 60kg * 1.5m * 10m/s^2 / 10s = 90 Watts 60 kg mass Three 30-watt light bulbs 1.5 m ladder ~10 m/s^2 gravitational acceleration

    6. ENERGY VS. POWER • Watts (W) and kilowatts (kW) measure power, or the rate at which work is performed. • Watt-hours (Wh) and kilowatt-hours (kWh) measure energy, or the quantity of electricity used. • Demand is measured in watts, • Consumption is measured in watt hours.

    7. Power Vs. Energy Power: 2.1 kW Watts Time Energy: ~12 kWh

    8. Powerful Definitions • 1 Ampere – A charge carrying 6.2 x 10^18 electrons per second. • 1 Volt – The difference in electric potential across a wire when a current of one ampere dissipates one watt of power. • Watts = Volts x Amps

    9. Ohm’s Law • V (voltage) = I (current) X R (resistance)

    10. Electricity Transmission

    11. The Electricity Grid • Links power plants to load centers • Links transmission lines together • Power is ‘pooled’ in the transmission system, and each distribution system draws from the pool • ‘System’ has diversity of sources • 150 computerized control centers to dispatch generators as needed An electron is an electron!

    12. Grid Efficiencies • Power Plants • Old Coal 35% • New Coal 60% • Wind 45% • Solar PV 15% • T&D • 6-8% loss • $20 billion/yr

    13. Categories of Power Plants • Base-load Power plants – run all the time (nuclear) • Peaking power plants – run to meet peak loads (old coal or oil fired) • Intermediate power plants – meet constantly changing loads (Nat gas)

    14. Power Mix • Renewable vs. Non-renewable power • Climate Neutral power

    15. Consumption Source: U.S. EIA, Monthly Energy Review (March 2012)

    16. Historical Trends Source: U.S. EIA, Annual Energy Review 2010

    17. Historical Consumption Source: U.S. EIA, Annual Energy Review 2010

    18. Energy Costs

    19. How to Read your Energy Bill • Electricity • Baseline Usage: $0.11 per kWh • Tier 1: 30% above Baseline, $0.13 per kWh • Tier 2: 70% above Baseline, $0.23 per kWh • Tier 3: 100% above Baseline, $0.31 per kWh • Tier 4: 300%+ above Baseline, $0.36 per kWh

    20. How We Use Energy

    21. Common Appliance Energy Use

    22. Benefits of Energy Efficiency • Impacts from historical Investment in Energy Efficiency in California versus US as a whole

    23. Energy in California – Efficiency and Renewables Robert Marciel PG&E Pacific Energy Center Christine Prestella Pacific Gas & Electric Government and Community Partnerships

    24. Lunch 1 Hour

    25. Energy Breakouts Basic Energy Audits Benchmarking Tools Solar Basics

    26. Field Trip Transit Meeting location

    27. Academy of Sciences • 55 Music Concourse Drive San Francisco, CA 94118 • We are driving a 15 person van and 1 minivan (holds 6). • If you want to leave from the Academy you can. • If you don’t travel with us meet up at the back of the building at 330.