Hi Peri,
Also, trucks tend to be driven during daylight hours (not always,
but mainly.) Trucks only charge when they are not moving, keep in mind.
The few EV semi-trucks that I have actually seen here in Auckland
seem to have (at this time) battery packs that are designed to be
swapped out quickly for charging. They will tend to charge these
spare packs when is it least expensive to do so.
Both the daylight driving and the swappable packs will push
charging off-peak, where power is plentiful and cheap. The grid only has
issues during periods of peak demand, typically in the late afternoon.
For most of the 24 hours in a day, the grid operators have surplus
capacity. During the late evening and before dawn, they have _heaps_ of
surplus capacity. They would be overjoyed to sell this wasted excess
grid capacity if they could do so.
The trucking industry is very price sensitive. If they can buy fuel
for a few cents less, then they will alter their schedule to do so. The
grid operators simply have to offer some sort of off-peak charging
incentive (or an on-peak charging surcharge) and the "problem" is easily
solved.
Here in Auckland, they often operate the residential (electric)
water heaters on a system that is controlled by the power utility. The
utility will switch off the water heater element during peak times to
move the consumption to help grid capacity. All done with "ripple
signals" from the utility over the power wires to your water heater
circuit. You can participate or choose not to by simply pressing a
button on your electrical panel. You will pay full price for the
electricity to heat you water if you do, however. _Everyone_ in New
Zealand has a sophisticated electronic meter that logs what you are
drawing and what time you did it, then sends this continuously to the
power utility over the power wires.
There is no EV grid crisis looming. I have no idea who is
propagating this nonsense.
Bill D.
On 11/24/2022 8:17 PM, Peri Hartman via EV wrote:
Bill, I don't have any axe to grind here, but the issue was about
providing power to charge long haul trucks. While I think your
argument works well for small trucks and domestic cars, I'd like to
see what you have to say about long haul trucks. I highly respect your
points of view.
Peri
<< Annoyed by leaf blowers ? https://quietcleanseattle.org/ >>
------ Original Message ------
From: "Bill Dube via EV" <[email protected]>
To: [email protected]
Cc: "Bill Dube" <[email protected]>
Sent: 23-Nov-22 14:55:48
Subject: Re: [EVDL] the grid needs upgrading - fast
No need upgrade the grid. None. Just need a few incentives and a
little intelligence.
There is a lot of misinformation about this, here on the EVDL even.
>>>>>> Grid capacity problem ? >>>>>>>>>>>
There is LOTS of power available on the grid, just not at the
peak times of the day. No problem what-so-ever. EVs are _driven_
during the day, and are charged when they are parked, during the
night. Provide an economic incentive to folks to change off peak and
the grid capacity "problem" vanishes.
>>>>>>>> Solar power is during the day, while you are at work. How do
you charge from solar? <<<<
It is a power grid. You put power in at one location, and you can
take it out at another. This is what it does. Use it.
If your home solar panels are providing surplus power to the
grid, you can draw it out from a location other than your home to
charge your EV. It is simply a matter of giving the grid operator
incentive to take a reasonable fee for doing this. Legislation,
financial incentive, public sentiment, etc. No brainer.
>>>>>>> EV power is no different than washers, driers, stoves,
electric heat, etc. <<<<<<
The grid has gone through decades of constant evolution. It has
very nicely adapted and upgraded with the advent of air conditioning,
electric heat, and power hungry home appliances.
As EVs slowly ramp up in popularity, the grid operators will
adapt. EVs and EV chargers can easily be quickly switched off and
back on to "park shave" during periods of peak load. The grid
operators simply have to decide on which of the many methods they
want to use to talk to your EV or your charger, and offer you an
incentive to participate.
Bill D.
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