xylhim said:
We'll get August 2014 numbers in a few days. From http://insideevs.com/monthly-plug-in-sales-scorecard/, 764 Spark EVs were sold in 2014 so far, for an average of ~109 units/month. Only 2 months have passed xylhim's 125 minimum a month and the average is below that minimum. They've yet to move more even 200 units/month, let alone 450.
Stop putting words in my mouth please, this was a hypothetical about the error in trying to extrapolate beyond a given range of data. I could care less how many Spark EVs are sold, but guesstimating DC fast charger adoption based on sales figures is really silly. When this thread was started would you have believed that BMW would be releasing fast charging units for $6000 and that NRG would be installing SAE combo at all their current fast charging stations in California?
On plugshare now there are 23 SAE combo units across the country in less than one year since its initial rollout; how many did Chademo have in it's first year in North America?
You're the one that came up with the numbers. We suggested that you adjust your dream. GM moved 80 Spark EVs in the US last month.
Again, the sales numbers do matter. If volumes are small, there's no business justification for anyone (e.g. the automaker selling SAE Combo cars or charging networks) to bother adding support for SAE Combo either via a dual standard DC FC vs. a single or adding a 2nd DC FC. California "lucked out" in that GM was clever enough to force their terms into the NRG eVgo settlement.
As for BMW's "$6000" DC FCs, the price is $6548 subsidized, not including installation. As I've posted earlier, there still a huge additional cost to install. See
http://www.mychevysparkev.com/forum/viewtopic.php?f=7&t=3753. And, how many have been installed anywhere? So far, the number appears to be 0.
How many SAE Combo DC FCs has GM installed for public use?
Let's do some math. Let's assume installing a DC FC costs only the hardware (which it doesn't): $6,548, if you're qualified for the subsidized price and electricity is free, which it's not. If they charged $5/session, it would take 1309.6 sessions to break even. At $5/session (price for Blink members on their DC FCs ($8/session for non-members) before they switched to another pricing model, but doesn't seem to have gone into effect everywhere yet), let's assume they only got 3 sessions/day. It would take 1.2 years to breakeven, and that assumes the DC FC requires no maintenance (
http://nissanqc.com/ requires periodic cleaning of its 5 air filters otherwise they'll hit temperature errors and stop working) and doesn't break down once. I've not seen a single DC FC in the Bay Area go an entire year w/o being out-of-order/breaking down in some way. It doesn't seem like they can go even 6 months w/o a breakdown.
Let's adjust the above numbers. Let's say it cost $16,548 for the subsidized hardware and $10K to install (1/2 of the $20K wiring cost at
http://www.americas.fujielectric.co... Comparison Study (25kW vs 50kW) 7-3-12.pdf). Let's assume that the electricity from a DC FC session only cost $1 to the provider (too low, as it doesn't take into account demand charges and too low based on typical per kWh California costs) and that they still charge $5/session. It would take 4,137 sessions to recoup the cost of the (too low) DC FC hardware, install cost and (too low) electricity. Assuming 3 sessions/day, that's 3.78 years.
As for the NRG eVgo settlement, that was decided before I even started this thread. I didn't know the details, at the time.
As for 23, I see only 18 now in the 48 states. It's confirmed that
http://www.plugshare.com/?location=40253 (at
https://www.facebook.com/groups/seattlenissanleaf/permalink/833657249999047/) has no DC FC. In fact, he said he talked to 3 people at the dealer and they didn't even know what at DC FC/QC was.