SUSTAINABLE ENERGY!!!! ? - PowerPoint PPT Presentation

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SUSTAINABLE ENERGY!!!! ?

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SUSTAINABLE ENERGY!!!! Pass back the new objective sheet and read the board! If you have your permission slip and $5, please put it out on your desk for pick up! – PowerPoint PPT presentation

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Title: SUSTAINABLE ENERGY!!!! ?


1
SUSTAINABLE ENERGY!!!! ?
  • Pass back the new objective sheet and read the
    board!
  • If you have your permission slip and 5, please
    put it out on your desk for pick up!

2
Asking the big energy questions
  • How do we live sustainably on our planet?
  • What tradeoffs must be considered if our society
    gets serious about making the transition from a
    consumptive society to a sustainable society?

3
A proposition
  • We NEED energy. The FORM of energy and the FUELS
    we use to create convenient energy are a matter
    of choice.
  • (Electricity for buildings/Vehicles)

4
  • So what will take the place of fossil fuels?

5
Every power system has pros and cons
6
Solar power must be stored for nights and cloudy
days
7
Are we asking the wrong question?
  • Should we be looking for a one-to-one
    substitution solution?

8
Distributed power vs centralized power
  • Creating a paradigm shift

9
Current electricity grid
  • One major regional power plant, usually coal,
    natural gas or nuclear supplies areas needs
  • Same plan throughout US

10
Our electric grid power plants connected to
consumers
11
Our electric grid power plants connected to
consumers
12
A new energy concept
  • Distributed Power dispersed, small-scale power
    systems customized to geographic region combine
    to meet a regions needs

13
The mix that works for Houston would be different
than the mix for Detroit.
14
A Smarter grid (how is it smarter? Compare to
centralized)
15
Solar Leasing Program announced 2/10/15! (San
Antonio)
Installation companies own and install solar
panels on homes rent the roof space from
homeowners
grid
Get electricity surplus sold to CPS rent check
from installation companies
CPS receives surplus kW to distribute on grid to
other customers
16
CPS avoiding another centralized power plant!
  • CPS Energy is our utility, its owned by us, the
    people of San Antonio. And the idea of our
    utility putting solar on our peoples rooftops,
    instead of building another centralized power
    plant its a very exciting thing, and Solar San
    Antonio (SSA) is very supportive, stated SSA
    Interim Executive Director Anita Ledbetter in a
    news release. Ledbetter is also executive
    director of Build Green San Antonio, the
    nonprofit sustainable building resource and
    third-party green building certification program.

17
Smart grid and smart meters
  • Information allows for smart decision making
  • Expected connectivity with major appliances

18
Decentralized power
  • Advantages
  • Greater reliance on renewables
  • Decreased climate change
  • Protection from centralized power outages
    (storms, malfunction, terrorism)
  • New jobs/new industries
  • Promote more community
  • Disadvantages
  • Change is difficult
  • Need for new infrastructure which may be costly
  • Requires more cooperation
  • Some jobs will be lost
  • Shift in local economies

19
Process it!
  • Describe centralized power
  • Describe decentralized power
  • Explain how geography would impact decentralized
    power

20
ENERGY EFFICIENCY!!!
21
Energy Efficiency
  • The easiest alternative energy source is the
    energy we dont use
  • Savings drives innovation
  • Starting with increased efficiency makes meeting
    demand with sustainables much easier.

22
Name the city . . . .
  • Switched 2,450 incandescent traffic signals to
    LED to save 3.6 million/yr
  • Has the third biggest fleet of hybrid vehicles in
    the nation
  • Has reduced greenhouse gas emissions by 26 since
    2007
  • Ranks first in the nation for purchasing green
    electricity

23
Hometown H-town!
24
250 Charging stations in Houston
  • 2009 Reliant Energy sponsored the conversion of
    ten City of Houston Prius vehicles to
    plug-in-hybrid electric vehicles (PHEV).
  • 2011 the City received its first two all
    electric passenger vehicles. The all electric
    Nissan Leafs have zero tailpipe emissions, and it
    is estimated that each vehicle will save 7-8 K
    in fuel and maintenance costs over a three year
    period. In 2011 the City will continue to grow
    the electric vehicle fleet by adding an
    additional 23 electric vehicles.

25
Electric vehicles Chevy Volt, Nissan leaf, BMW
i3
26
Tesla 3.7 sec to 60mph 245 mi/charge 0
tailpipe emissions
27
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28
3 most inefficient devices
  • Incandescent lights
  • Internal combustion engine
  • Nuclear electrical generation
  • 5 efficient heat bulb
  • Less than 5 of fuel moves the driver! Energy
    lost in propulsion system, idling, running AC,
    conversion to heat, moving vehicle. Vehicle
    weight is responsible for more than 2/3 of energy
    needed to move it.
  • Consider entire life cycle of production
    mining, refining, transportation of fuel, waste
    heat of steam

29
3 most inefficient devices solutions!
  • Incandescent lights
  • Internal combustion engine
  • Nuclear electrical generation
  • Transition to LEDs
  • CAFÉ standard currently 27mpg New law 54.5
    mpg by 2025 (changes start in 2017 models)
  • Consider entire life cycle of production

30
Efficiency of a device
  • Energy in energy out as a percentage

31
Net energy of a fuel or energy source
  • Total power provided by source total energy
    required to produce power
  • Extraction? transportation? processing ?
    transportation to power plant ? electrical
    generation ? transmission ? end use
  • Compare net energy of our options (trade off!)

32
Whats the difference?
  • Energy efficiency
  • Net energy

33
25 of energy is used in buildings, so. . . . .
34
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41
Field trip!
  • Green Resource Building Center
  • Last Organic Outpost
  • Kendall Library

42
Home Energy Audit -
  • Create a plan to reduce your electrical use at
    home.
  • What if you changed all your light bulbs to LEDs?
  • How much power do your computers use?
  • How might turning off your game system when
    youre done change your electric bill?

43
Home Energy Audit
  • AC vs. furnace/ hot water

44
Kahoot?
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