How Much Does it Cost to Charge an Electric Car?

There are many reasons for considering making an electric car the next car you buy or lease. Besides the many environmental benefits, the promise of energy security, the silky-smooth driving experience with instant torque available without delay and low maintenance, one of the best characteristics of electric vehicles is how little they cost to operate. I've covered this topic here before, but this is something that really needs to be driven home. While Electric cars are currently more expensive than their conventionally-powered counterparts, the total cost of ownership over time can certainly be less, and in some cases much less.

Just as with gasoline cars some EV's are more efficient than others, but the average EV needs about 30 kWh’s of electricity to power the vehicle for 100 miles. For example, the EPA rating for the Nissan LEAF is exactly 30 kWh’s per 100 miles. A Tesla Model S 60 is rated at a combined 35 kWh’s per 100 miles and uses a little more energy since it’s heavier and more powerful than a LEAF, while the Chevy Spark EV has a combined consumption rating of 28 kWh’s per 100 miles. The BMW i3’s EPA consumption ratings haven’t been announced yet, but since the i3 is likely to be wear the “most efficient EV” crown, I expect it to be rated somewhere around 26kWh’s per 100 miles. The consumption for all electric vehicles can be viewed at the US Department of Energy’s website: www.fueleconomy.gov

According to Researchers at the University of Michigan Transportation Research Institute, the sales-weighted average fuel economy of all new vehicles sold in the United States in 2013 was 24.8 mpg. The average cost for a gallon of regular gasoline in the US over the past three years was $3.53/gallon. By using 15,000 miles as the average amount of miles a person will drive in a year, the annual cost of gasoline for the average car will be $2,135 per year, using the average cost of gasoline from 2011 through 2013.

Electricity rates vary much more than gasoline across the country, but the cost is much more stable. Unlike with gasoline, there aren’t huge spikes in electricity rates if a refinery has a problem, and neither does the price skyrocket when there is political instability in one of the large oil producing countries as we have seen lately, since all of the electricity we use in America is domestically produced. The average cost of electricity in the US is 12 cents per kWh. Therefore the average person driving an average EV 15,000 miles per year pay about $540.00 per year to charge it. As mentioned, the cost of electricity can vary greatly depending on where you live, but in order to equal the price of the average gasoline car’s fuel costs, the price of electricity would have to be four times the national average, and cost 48 cents per kWh. Nowhere in the US does electricity cost even close to that much. So the average American would save roughly $1,600 per year in fuel alone, and that's if gasoline prices remain around $3.53 per gallon. Gasoline prices do frequently spike up and down, but in the long run they always goes up. Electricity costs do eventually increase also, but not nearly at the pace of gasoline. Plus with fewer moving parts, EV's cost much less to maintain. If you combine the fuel savings with the reduced maintenance costs, it's clear to see an EV will cost you much less in the long run, even if the vehicle costs a little more up front.

Another great thing about electric cars is that you can easily reduce your electric bill by $40 to $50 per month just by being more efficient, and therefore completely eliminate your transportation fuel cost! You really can't use less gasoline unless you drive less or buy a more efficient car, but you can reduce your electricity usage at home and still drive as much as you always have. Simple measures like a programmable thermostat and the use of compact florescent or LED light bulbs can make a big difference. In fact, five 100 watt light bulbs left on continuously for a year use nearly the same amount of energy as it takes to power an electric car 15,000 miles! Here's how: five 100 watt light bulbs use 500 watts per hour. In 24 hours they use 12,000 watts or 12kWh. In 365 days they use 4,380kWh’s. A typical EV that uses 30 kWh’s for every 100 miles will use 4,500 kWh’s to drive 15,000 miles. Simply by turning unnecessary lighting off at your home, you can drastically reduce or completely eliminate your annual transportation fuel cost. Try doing that with a gasser!

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NYC Infrastructure Hearing

The ChargePoint map of charger locations in NYC

This isn't an i3-specific post, however it is very important to the i3 and to all other plug in vehicles. The city of New York is considering legislation that would help to dramatically increase the number of public charging stations within city limits. While New York has been steadily adding charging stations in private garages and parking lots, there are currently only about 140 chargers in the entire city, and many locations account for multiple chargers so there really isn't a good spread of places to charge in New York City.

Answering questions from the Board

I was asked by Mayor Bloomberg's Office of Long Term Planning and Sustainability to testify in favor of  Intro.1176. There were a few other industry experts that testified and for the most part it seems the Joint Housing and Transportation Board that would be considering the bill was definitely in favor of it. In fact, the Co-Chairman James Vacca actually called for the bill to be expanded to include curbside charging stations which the bill in its current form didn't include.

Intro. 1176, loosely called the "Charger Ready Bill" would require all new construction projects in NYC that are adding 4 or more new parking spaces to install the conduit and make sure the site has the proper electrical capacity for future electric vehicle charging equipment to be installed in up to 20% of the parking spaces added. This is a great bill because it isn't financially onerous on the owner, as it doesn't require them to install the EVSE's or even pull the wiring just yet, but have the electric raceways there for future use. It is not expensive at all to do this while you are building out the parking lot, but it becomes very expensive if you want to do it later as you often have to rip up the parking lot and trench to run the wiring. Having the parking lots and garages ready for future charging equipment will certainly lead to increased charge points as it will be quicker, less expensive and much easier to install them once the owner feels there is the need to.

Unfortunately right now New York just isn't ready for electric vehicles. I go into the City frequently and it's very difficult to get a charger that is available, near the destination I'm going to, working, and not blocked by a row of gas cars. I even did a blog post about the difficulty I had with my ActiveE once last year. Most of the time I go in there now I take my gas car because I can't be sure I'll be able to charge while I'm there and that's unfortunate for me and for the city. Instead of me driving my zero emission car there, I'm contributing to the air pollution problem that every major city has by driving my gas burning vehicle. I even have had people that live in the city email me to ask for advice about getting EV charging equipment installed where they live. It's very difficult to own an electric car if you live in the city because it's so difficult to get it charged without paying extraordinarily high installation fees well into the thousands of dollars.  Hopefully Intro.1176 will pass and we can begin to get the hundreds and even thousands of charging stations that NYC needs to accommodate the wave of plug in cars that will be on the streets of NY in the near future.

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BMW i3 & i8 Video

http://www.youtube.com/watch?v=Dk6_kCQtdNE&feature=youtu.be

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BMW i3: The Intersection of Policy, Business, & Carbon

I recently came across this interesting report. It's titled "BMW: i3 Electric Vehicle. The Intersection of Policy, Business, & Carbon" and was written by Lauren Blasch, Jeremy Pomp, Marla Stancil, Shyam Vijayaraghavan.







The report focuses on electric vehicles and their carbon footprint in general, as opposed to being i3 specific. It demonstrates that depending on the source of the electricity used for charging the car, EV's can range from better to worse than a Toyota Prius in carbon emissions. It's interesting that they used the most efficient hybrid currently available to compare electric vehicle emissions to. I think it might have been more useful to use the Pruis and also show on the graph the average internal combustion engine cars carbon emissions also. They even go as far as to detail which states are better suited for electric cars based on their electricity generation mix. The good news is that New York and California, the target markets for the i3 since they both have "megacities" were two of the states that were "EV favorable" The report is only 28 pages long and many of the pages are graphs so it doesn't take long to read. There are some interesting fact in there so I recommend reading it if you are interested in electric vehicles and their impact on the environment.

One thing to consider though, the report is strictly focused on the carbon emissions of vehicles and I advocate electric cars for more reasons than just their carbon footprint. Even if you live in a state that produces 100% of it's electricity from burning coal, and by using an EV you are producing more carbon than if you owned a Toyota Prius, you are still spending your energy dollars on a DOMESTIC product. You are not contributing to the crushing trade imbalance, much of which is created from importing foreign oil and you are not sending some your money to radical Middle Eastern regimes, many of which hate us. Electricity is produced and distributed by local and regional companies, and 100% of the money you spend on it stays local. If you ask me, that's reason enough to drive an electric car.

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