2
What we’ll cover:
• What do these terms mean?• How much energy do I use?• What does energy cost?• How much energy is produced?• What can I do?
3
What do these terms mean?
• Volts: – A measure of the electrical power “pressure”
employed by an appliance.• Voltage is to electricity as Pressure is to water.
4
What do these terms mean? (2)
• Ampere: – The rate of flow of electricity• The proportionate amount of electrons flowing through
a conductor past a given point in one second.
5
What do these terms mean? (3)
• Watts: – The measure of the rate of electrical use at any
moment.• Watts = Volts x Amps• Think of it as the speed on a speedometer!
6
What do these terms mean? (4)
• Watt-Hours and Kilowatt-Hours– Total energy used over time.• Watt Hours = Watts x Hours • kWH = Watts x Hours measured in Thousands• This is what you pay for on your Electric Bills!
$$
$$
$
$$$$$
8
How much Energy do I use?
• Cooling– Small window unit AC• 900 Watts
– Big window unit AC• 1400 Watts
– Central Air Conditioning• 3500 Watts
– Ceiling fan 42”• 24 Watts
9
How much Energy do I use?
• Heating:– Electric Space Heater (low setting)• 600 Watts
– Electric Space Heater (high setting)• 1440 Watts
– Electric Furnace / Central Heating (CA)• 7900 Watts
– Central Heating (Cold Areas)• 26,000 Watts
10
How much energy do I use?• Appliances
– Water Heater• 3800 Watts
– Dishwasher• 3600 Watts
– Electric Oven at 350oF• 2000 Watts
– Refrigerator (Compressing / Average)• 500 Watts / 100 Watts
– Microwave• 1440 Watts
– Coffee Maker• 900 Watts
– Clock radio• 4 Watts
11
How much energy do I use?
• Lighting– Incandescent Light bulb• 60 Watts
– CFL Light Bulb• 18 Watts (looks like 60 watts)
– LED night light• .5 Watts
12
How much energy do I use?• Electronics
– Desktop computer and 17” Monitor• 300 Watts
– 50” Plasma TV• 340 Watts
– 50” LCD TV• 260 Watts
– PS3• 195 Watts
– Xbox 360• 185 Watts
– Nintendo Wii• 20 Watts
13
How much energy do I use?
One – AA Battery Contains a total of 3 kWH.
To put this in perspective,it would take 1000 batteries
to do one load of laundry.
Lets put this in perspective!
Leaving the heater on all day at 82oF is~200 kWH a day (during winter months)
To put this in perspective, Turning on the heater only while your home would save you enough money
in 1yr to buy a Used Car.
15
What does energy cost?
• U.S Residential National Average– 12¢ per kilowatt hour
• California Average– 15.22¢ per kWH
• In Sacramento (SMUD):– Nov – Apr
• 9.5 ¢ per kWH• 17.55 ¢ per kWH (after 1120 kWH used)
– May – Oct• 10.2 ¢ per kWH• 18.2 ¢ per kWH (after 700 kWH used)
Prices go up if you use more energyPrices go up in the summer time
16
What does energy cost?
• Sacramento’s Optional Time-of-use-Rates
- Nov – Apr- 10.5 ¢ per kWH (on peak)- 9.75 ¢ per kWH (off-peak)
- May-Oct- 23.5 ¢ per kWH (on-peak)- 10.9 ¢ per kWH (off-peak)
- Peak Hours of Energy-Use: 4pm – 8pm
What does energy cost?
18
As of March 2010:
States with the Highest Average Energy Costs1) Hawaii – 27.79¢ / kWh2) Connecticut – 19.36 ¢ / kWh3) New York – 18.02 ¢ / kWh
States with the Lowest Average Energy Costs4) North Dakota – 7.29 ¢ / kWh5) Missouri – 7.6 ¢ / kWh
19
How much energy is produced?
• In the US today, 12% of energy comes from renewable sources. Wind, Water, and Sun.
• If traditional power plants were converted to renewable production sites, 93 % of our energy could come from renewable sources.
20
How much energy is produced?
Solar Energy is more viable in some areas than in others.It serves as a great Residential energy source in California.
In most of CA:1 Square Meter of Solar Panels will produce 6kWH each day.
That’s $275 per year!(Plus tax rebates!)
21
How Much energy is produced?
The biggest On-Shore Wind Farm:Horse Hollow Wind Energy Center in Taylor and Nolan
Counties, Tex.47,000 Acres
735 Megawatts (or: 735,000 kilowatts)
22
How much energy is produced?
World’s largest Tidal Power producer:Rance Tidal Barrage in Bretagne, France
240 Megawatts
23
How much energy is produced?
World’s largest solar thermal plant:Southern California
2600 megawatts
24
How much energy is produced?
World’s Largest Photovoltaic Power Plant:Olmedilla Photovoltaic Park in Olmedilla de Alarcón, Spain
60 megawatts
25
What can I do?• Use space heaters to heat only the rooms you're in, rather
than a central system that heats the whole house.– $3200 - $1400 / year (depending on environment)
• Turn off central heating system when you're not home.– $1286 average (varies with environment)
• Use Ceiling Fans instead of the Air Conditioning– $664 / year
• Turn off lights you’re not using– $219 / year
• Wash laundry in cold water instead of hot/warm– $167 / year
• Put your computer into Sleep mode when not in use– $143 / year
26
What can I do?• Use a clothes-line to dry your laundry– $141 / year
• In rooms with multiple light-bulbs, remove one.– $90 / year
• Replace regular lightbulbs with CFLs– $90 / year
• Replace top-loading washer with front-load washers– $90 / year
• Replace fridges that are older than 10 years– $45 / year