Electric Vehicles Save Money, Can Also Pollute Like Gas Cars: Study

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Electric Vehicles Save Money, Can Also Pollute Like Gas Cars: Study

Gasoline-powered cars are slowly starting to look like pirates plundering the world for fuel and slashing environmental throats as they go. Thanks to that, the fair maiden electric vehicles with zero-emissions claims and low-cost fueling can easily float in on the smog cloud looking squeaky-clean. But are they?

A new study by the Union of Concerned Scientists (UCS) sheds light on the carbon footprint, or lack thereof, that electric vehicles have. The 60-page document goes in-depth to reveal pollution produced by recharging cars like the Nissan Leaf and the differences in cost to refuel an average gasoline-powered compact car versus charging a pure EV.

It’s true that driving an EV will almost certainly save drivers money “at the pump:” The study shows that drivers save up to $1,200 dollars annually by driving a Nissan Leaf. It also makes some basic assumptions to justify those numbers: first, that compact cars get an average of 27 mpg, second that efficient hybrids get 50 mpg, based on EPA ratings and third, gas costs $3.50 per-gallon. Those standardizations allow for the aforementioned comparison and cost savings statement.

Saving money is great, but the study isn’t solely concerned with annual fuel cost of ownership. A large portion of the UCS’ report discusses the carbon footprint produced by EVs, something people willing to suffer through range anxiety and planned charging sessions are almost invariably conscious of.

It turns out that EVs save money across the board, but can also create more greenhouse gas emissions than a traditional gas-burning car. How can this be possible?

We spoke to Don Anair, the study’s author, and he said 45 percent of the U.S. population lives under a power grid clean enough to best a Toyota Prius’ 50 mpg rating. In other words, for more than half of Americans, it’s actually less harmful to drive a Prius ($24,000 to start), which is more than $10,000 cheaper than a Nissan Leaf. Believe it or not, there are actually parts of the country where sub-compact cars are easier on emissions than an EV, here’s why.

American power plant processes aren’t uniform, and the power produced within create varying levels of greenhouse gas emissions. A table in the UCS document actually shows that less than a third of American electricity grid regions generate enough green energy to best the Toyota Prius’ 50 mpg average economy.

The study boils down to two things: cost to drive and cost to the environment. It demonstrates that they are two entirely different issues and that buying an EV doesn’t necessarily save the environment. In fact, on the country’s “dirtiest” energy grid it’s actually less harmful to drive a 2012 Volkswagen Passat TDI than a Nissan Leaf.

Anair did also point out that only 18 percent of the population lives in an area where coal-generated electricity is prominent enough to make EVs less efficient than a sub-compact.

[Source: Union of Concerned Scientists]

  • InigoMontoya6

    This study came out yesterday and is heavily biased against EVs.  Its not EVs that create more greenhouse gas….its the powerplants.  And EV owners have increasingly more options for where they get their electricity; wind, sun, etc.

  • Wtsailor

    It’s understandable that there will ALWAYS be some type of Carbon Footprint but when EVs are singled out from other superfluous electric usage it just puts them on a pedestal.
    Did this report consider the carbon footprint of finding oil, drilling for it, transporting it, and refining it. If you’ve ever lived near a refinery, you won’t forget it. And Electric power generation is improving not “the gasoline industry”.

  • 13biscuits

    The good news is that the US owns this problem. I will exercise my right to believe it is better in the short term to produce dirty energy here than to prolong our dependence on foreign oil markets. We have the brain trust in this country to solve issues with domestic energy production. As long as we continue to foster dependence on oil markets we do not own nor control we wil continue to falter, and at great expense. I am not excited to buy an EV for many reasons but I wil..

  • Budjarman

    Did Rush write this piece? It is sad but one political party is so against Oboma that they choose to trash all electric cars not just the VOLT.

  • Bobchr58

    Another thing that is a big fail in this article is, even coal burning can be made more efficient and e carbon sequestration process made easier by using Solid oxide fuel cells to burn gasified coal. This raises efficiency of generation to over 50% vs conventional steam turbines and co-generation can raise this to over 75%. The CO2 combined with the resulting steam can be condensed into clear plastic curtains to grow algae that will sequester the CO2 and the algae can be used to creat Algol a synthetic bio fuel which would burn cleaner than current fossil fuels and need less refining. Although not an ultimate solution to the green house has problem you cut emissions immediately by 70% by making power generation more efficient and delay the excess CO2 from entering the atmosphere by creating a fuel that will be burned by more efficient ICE’s.

  • Bobchr

    Some coal mines are already using these fuel cell to burn the excess methane gas in certain mines but I suspect the electricity generated is just being used to power unmanned mining equipment in low oxygen environments underground and coal conveyors. If these mining companies were smart they would just build then plant at the source and sell the excess electricity o the grid and eliminate rail transport , reducing their carbon footprint even further. Bio diesel manufactured during the process can be sold to railroads and truckers nationwide. We would probably become a net exporter of fuel in no time.

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