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Recharge Wrap-up: utility sells discounted Powerwall, Nissan-Renault builds 340K EVs

Vermont electric utility Green Mountain Power is selling discounted Tesla Powerwalls to its customers in hopes of balancing the grid. The battery packs would be used not just to help customers store renewable energy for home solar systems or as backup power, but also to occasionally discharge power back to the grid when needed. In addition to this decentralized energy storage being useful to customers, it also benefits the utility by taking demand off energy generating infrastructure during periods of peak demand. The pilot project will put 500 Tesla Powerwalls in customers' homes. Learn more at Green Car Reports, or in the story from Vermont Public Radio. Together, Nissan and Renault have built 340,000 electric cars. The allied Japanese and French automakers hit 100,000 EVs in July 2013, 200,000 in November 2014, and a quarter million in June of 2015. The Nissan Leaf, which first went on sale at the end of 2010, makes up the bulk of the EVs the Renault-Nissan Alliance has sold. Renault delivered its 50,000th Zoe EV in April 2016. Leaf sales have declined in the US in recent months, due at least in part to the anticipation of the Chevrolet Bolt and Tesla Model 3. Nissan, however, is expected to update the Leaf with a 200-mile driving range in the coming years. Read more at Green Car Reports. Students at the Bearys Institute of Technology (BIT) in Karnataka, India have built what they call the Hybrid Water Car. The car uses a system to electrolyze hydrogen from water and add it to the fuel for more efficient combustion. The system has been placed into a chopped up, lightweighted Maruti Omni. While the benefits of onboard hydrogen electrolyzers have been debated for some time, the BIT students don't plan to stop there, as their next project car will be fueled completely by hydrogen. Read more from Car and Bike. Facebook has hired Rich Heley away from Tesla. The former Tesla VP of Product Technology is making the move to the social media giant's new Building 8 research lab. Heley joined Tesla in November 2013 after working at Apple. Read more at Automotive News.

2014 Rogue kicks off production as 10,000,000th Nissan built in Tennessee

News comes across our desks all the time of one manufacturer marking some milestone or another. But Nissan has just announced a double-whammy: Not only has Nissan's assembly plant in Smyrna, TN, just built its ten-millionth vehicle, but that ten-millionth vehicle just so happened to be the first Nissan Rogue to be built in the United States.
The milestone arrives after over three decades of production that has included such nameplates as the Sentra, Altima, Maxima, Leaf, Pathfinder, Infiniti QX60, Xterra, Frontier, and now the Rogue. The latter crossover has swelled into Nissan's second best-selling vehicle, with demand growing by nearly 50 percent from 2010 to 2012. Now redesigned for 2014 and built locally, Nissan is evidently banking on demand continuing to rise.

DC fast charging not as damaging to EV batteries as expected

As convenient as DC fast charging is, there have been lots of warnings that repeated dumping of so many electrons into an electric vehicle's battery pack in such a short time would reduce the battery's life. While everyone agrees that DC fast charging does have some effect on battery life, it may not be as bad as previously expected. Over on SimanaitisSays, Dennis Simanaitis, writes about a recent presentation by Matt Shirk of the Idaho National Laboratory (INL) called DC Fast, Wireless, And Conductive Charging Evaluation Projects (PDF) that describes an ongoing test of four 2012 Nissan Leaf EVs that are being charged in two pairs of two. One pair only recharges from 50-kW DC fast chargers, which the other two sip from 3.3-kW Level 2 chargers exclusively. Otherwise, the cars are operated pretty much the same: climate is automatically set to 72 degrees, are driven on public roads around Phoenix, AZ and have the same set of dedicated drivers is rotated through the four cars. "Degradation depends more on the miles traveled than on the nature of recharging." What's most interesting are the charts on page seven of Shirk's presentation (click the image above to enlarge), which show the energy capacity of each of the four vehicles. When they were new, the four batteries were each tested to measure their energy capacity and given a 0 capacity loss baseline. They were then tested at 10,000, 20,000, 30,000 and 40,000 miles, and at each point, the DC-only EVs had roughly the same amount of battery loss as the Level 2 test subjects. The DC cars did lose a bit more at each test, but only around a 25-percent overall loss after 40k, compared to 23 percent for the Level 2 cars. Simanaitis' takeaway is that, "INL data suggest that the amount of degradation depends more on the miles traveled than on the nature of recharging." The tests are part of the INLs' Advanced Vehicle Testing Activity work and a final report is forthcoming. These initial numbers from IPL do mesh with other research into DC fast charging, though. Mitsubishi said daily fast charging wouldn't really hurt the battery in the i-MiEV and MIT tests of a Fisker Karma battery showed just 10-percent loss over 1,500 rapid charge-discharge cycles.