Energy Efficiency and Conservation

What’s the difference between Energy Efficiency and Energy Conservation?

Energy Conservation: reducing energy use to be less wasteful Energy Efficiency= useful energy output x 100 % total energy

Efficiency Ex: MPG Energy Efficiency= useful energy output total energy = # of miles out # of gallons in = Miles PER gallon

CFL vs. IB

Cogeneration: the process of reusing excess utility plant heat for home heating. Cogeneration-> efficiency or conservation?

Pair Share In 2011, Transportation accounted for 28% of the total Energy Consumption in the U.S. and accounted for 27% of total U.S. Greenhouse Gas Emissions. As the largest end-user of energy in the U.S., the transit sector is a huge target for both conservation and efficiency strategies. What is one conservation strategy for transit? What is one efficiency strategy for transit?

H.O.V.

Electric Vehicles Pros: Cons: -Quiet -Transfer pollution from car to power plants -Reduce C02 emissions -Less money at the pump! - Limited charging stations -Can get electricity from different energy sources Up front costs Limited range (can’t drive as far) *note how BIG market are young people who don’t have houses, so can’t charge their vehicles.

CAFE Standards U.S. Standards Goals: Benefits: Challenges: Also include incentives to advance specific technologies including EV, plug in hybrids and fuel cell vehicles Goals: Automakers double fuel economy (mpg) to 54.5 mpg by 2025. Benefits: Reduce oil consumption by 12 billion barrels* Save consumers $ on gas New jobs Challenges: Added cost raises price of new cars (by 3,000$) Limited choice *note one barrel is 42 gallons (bring in empty gallon)- embedded math question- how many gallons of oil is that? The main part of the bay is 400 miles squared and about .003 miles deep so its 1.2 miles cubed. 1 mile cubbed holds 10 to the 12 gallons of water, so there are roughly 1.2 times 10 12 gallons of water in SF bay. 12 billion barrels is .5 x10^12. So that means (VERY roughly) half of the ‘main’ part of sf bay

ZEV Action Plan California plan Goals: Benefits: Challenges: to put 1.5 million ZEVs on CA roads by 2025, meet long term emission reduction targets by 2050, build infrastructure in cities Benefits: Save Californian’s $ in fuel Meet Fed air quality standards Reduce gas imports Challenges: New infrastructure Consumer awareness Initial Costs Limited ZEV model choice

Electric Vehicles Pros: Cons: -Quiet VS. Pros: Cons: -Quiet -Transfer pollution from car to power plants -Reduce C02 emissions -Less money at the pump! -Limited charging stations -Can get electricity from different energy sources - Up front costs *note how BIG market are young people who don’t have houses, so can’t charge their vehicles.