Quote:
Originally Posted by SidetrackedSue
Regular 110v would work for this since tying up a faster charge point for the 10 hours someone is at a P&R doesn't make sense to me. It would be a helluva lot cheaper as well and serve both pure EVs and PHEVs.
|
I tend to agree with you, but the difference in cost between installing a trickle (120V) and a standard (240V) charging station is minimal. The only real difference in cost is on the electrical supply end, and that is related to the power output (which is voltage times current). A 12A 120V charging station draws the same amount of power as a (theoretical) 6A 240V charging station would (1.4kW). With 240V it becomes cheaper to install dual or even quad charging stations that share the power between the vehicles plugged in. For example, a 24A 240V quad charging station would give:
- all 24A (5.8 kW) to a single vehicle,
- 12A (2.9 kW) if two vehicles are plugged in,
- 8A (1.9 kW) if three vehicles are plugged in, and
- 6A (1.4 kW) if four vehicles are plugged in.
This would cost less to install than 4 trickle chargers and provide better charging flexibility based on demand.
Now DC Fast chargers are significantly more expensive and don't really belong in a P&R.
Quote:
Originally Posted by OTownandDown
Yes, the City should just have an RFP to provide charge points at every parking lot and parking garage.
Why can't they be cost neutral? Its not like these stations are empty, on the contrary they're always busy. At $1.50/hr, say even during business hours, that's about $2,500-3,000/yr. It's probably about $10-15k for an installation, so a 5-7 year payback period. I mean, there's also upkeep so I guess that math is thrown out the window. However the cost is still extremely low compared to operating these buildings and parking garages.
|
The issue is the up front cost would need to be borne by the city. They may be able to recoup the costs over a decade (depending on maintenance costs), but providers don't have the capital to invest the money required for the number of stations needed, especially considering Ottawa is only one of many cities that would want these stations. From the city's perspective, even if they can recoup the costs over time, counsel is always more concerned about this year's budget than future budgets, so until it becomes politically popular, they will only put lip service to it unfortunately.
Quote:
Originally Posted by OTownandDown
Anyways the private chargers are great, and I use them all the time, Minto towers (free), constitution square ($1/hr), performance court (free), NCC (free). Now, these free ones are actually in garages that are expensive, whereas the pay-as-you go tends to be in cheaper garages... go figure.
|
I rarely use them. I get enough of a charge overnight that I rarely need to recharge during the day. If they are free to use, then hey, why not, but I am a good reason as to why they shouldn't be free, as I would be taking a space that someone who does actually need to recharge might want.
Quote:
Originally Posted by OTownandDown
It's really too bad that block heaters are no longer a thing. Spending a work day plugged into a block heater is more than enough juice to commute. I mean, why do we need these fancy fast charger things when most of the time our cars are parked for the day? Grocery stores and malls can do a faster charger, but office parks and park-n-rides just need some 110V points installed. Most of the block heater posts I've come across in my travels are no longer in service. Some still work but they're few.
|
The problem with block heater posts is that block heaters are much lower power devices (between 300 & 400 W), so multiple outlets are on the same circuit. Your EV trickle charger uses 1.4 kW and thus needs its own circuit. As a result, if two people plugged in, or someone plugged something else in (like a vacuum cleaner for example) on the same circuit, the breaker would (hopefully) trip. The block heater outlets would need to be rewired to support EVs.