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Supercharger - Parkes, NSW

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cafz

Active Member
Jul 17, 2020
2,843
3,305
Australia
@RichardV spotted this in the minutes of the Parkes Shire Council, giving the location as "the car park off Welcome Street, between the Post Office and St Vincent de Paul Society (Vinnies) building.". Tesla is not mentioned by name but appears to be a six stall site matching up with the Drive NSW location that Tesla secured.

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Was out having a look yesterday, the council carpark is in two section, one beside the Salvos, the other beside the post office.
There's no sign of any action so far however the majority of parking is on an angle so positioning may be an issue depending on clearances...

There are two obvious electrical substations, one beside the front of the Salvo building, the other toward the opposite side rear of the same carpark.
The one at the back is smaller but beside a row of 6 (may have been 7?) 90 degree parking spaces (the only 90 degree spaces) so I suspect this may be where the site ends up.

As an aside the nearby free NRMA charger (single stall) was unoccupied which was a bit surprising given it was lunchtime (12:30) on Friday at the end of school holidays...
 
As an aside the nearby free NRMA charger (single stall) was unoccupied which was a bit surprising given it was lunchtime (12:30) on Friday at the end of school holidays...

Queuing/congestion at DCFCs so far has been an issue only on the Hume, Pacific and Princes highways. Off these routes, EVs are still a rare beast. Not to say it never happens (I once turned up at the single stall NRMA charger at Cowra… 2 minutes after another EV had arrived) but chargers off the main routes have pretty low average occupancy.
 
The one at the back is smaller but beside a row of 6 (may have been 7?) 90 degree parking spaces (the only 90 degree spaces) so I suspect this may be where the site ends up.
Both those distribution substations are 1000kVA despite the difference in physical size. In many cases they need to have a new substation installed for the Supercharger site anyway, but it's possible one of those has sufficient headroom (maybe a large consumer nearby has shut down).
 
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Both those distribution substations are 1000kVA despite the difference in physical size. In many cases they need to have a new substation installed for the Supercharger site anyway, but it's possible one of those has sufficient headroom (maybe a large consumer nearby has shut down).
Is 1000kVA sufficient for 6 V3/V4s ?
Tesla used a new 750kVA kiosk substation for the 2 cabinet 6 stall supercharger install in Wagga and a 1000kVA kiosk substation for the 3 cabinet 12 stall supercharger install in Yass.

Essential Energy have great online network capacity maps for these existing distribution substations,

The connected LV lines for the substation at the back here shown in cyan
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with 8 premises connected and a recorded peak of 868kVA
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And the other substation here,
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With 34 premises connected and recorded peak of 861kVA

I would expect in this instance Tesla would want a dedicated sub.

Looking Parkes Town Zone Substation capacity here
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Shows plenty of capacity on the 66kV/11kV transformers.
And also of the feeders from the Transgrid sub-transmission-substation,
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Does Ausgrid have anything similar? A quick web search didn’t reveal anything comparable…
All of the energy distributors are required to have a "Distribution Annual Planning Report" and in the case of Ausgrid they are also a Transmission supplier so theirs is a DTARP. There main portal is here,
That seems to show Zone Substation capacity but the juicy stuff might be buried in some xls sheets linked from there. Which I can't practically access without a desktop.
There main PDF report for 2033 is here,
 
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Interesting.
So on a busy holiday weekend on the Hume, the V3 Supercharger at Yass (at 83kW per stall) won't provide much more speed than the V2 units at Gundagai and Goulburn.
Each V3 cabinet can supply up to 334kW on 415V supply, so a 3-into-12 site in Australia is always going to be limited to that anyway.

It's not that bad though because in practice you'll usually have some cars charging under 83kW (older vehicles, battery too cold, SOC too high) which will leave capacity for the others.
 
Interesting.
So on a busy holiday weekend on the Hume, the V3 Supercharger at Yass (at 83kW per stall) won't provide much more speed than the V2 units at Gundagai and Goulburn.
83kW is a bit better than 65kW. Plus remember cars at higher states of charge won't pull 83kW. I'm very interested to see how busy these 10+ stall superchargers become. 12 stalls at say 40 mins charge per stall is theoretically a car leaving every 3 minutes.

8 stalls at Goulburn for example at only 65kW is say a 45 minute charge and a car leaving every 5.5 mins. So almost double the time.
6 stall chargers are worse at a car leaving every 7.5 minutes.
 
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Both those distribution substations are 1000kVA despite the difference in physical size. In many cases they need to have a new substation installed for the Supercharger site anyway, but it's possible one of those has sufficient headroom (maybe a large consumer nearby has shut down).

I just happen to be out in Parkes at the moment so ducked around to the carpark for another quick look.

Nearby large customers are the Post Office, newly expanded Council Library and the Salvo store, plus both substations appear quite old so unlikely to have much if any spare capacity...

If a new, additional substation is required the section where the larger one (with adjacent diagonal parking) has very little space available.
There does appear to be room near the smaller unit (adjacent to the 7x90 degree parking spaces) for another substation and associated Tesla cabinetry albeit at the expense of some trees.

Here's a couple of pictures of the two parts of the carpark.

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