Looking at a problem from the shoes of the Auto mfg. is interesting. No one most likely can give you a more detailed understanding of all the problems on their end. Should be interesting.
You last sentence I do not agree with. It is a cute sounding sound byte as many statements are. It is simply a different version of the question, "Is the glass half empty or half full"
My answer to the latter is always, neither. It is a function of process. If the glass was empty and now 1/2, then it is half full. If it was full and now 1/2. Then it is half empty.
Occom's Razor is a similar cute idea. On its surface, it is correct. However in realty, it's all how you verbally frame the statements you are comparing. A good movie example is the Senate hearing near the end of the movie, "Contact", regarding the Razor. Its all how the character Michael Kitz (James Woods) frames it.
Regarding the knowledge working against you, so to speak, another movie example. The movie, "Lucy" near the end, the following dialog:
Professor Norman:
"But all of this
knowledge, Lucy...
I'm not even sure that
mankind is ready for it.
We're so driven by
power and profit.
Given man's nature,
it might bring us only
instability and chaos."
Lucy:
"Ignorance brings chaos,
not knowledge."
I think you can substitute vision and understanding, clarity of thought lacking, for chaos in Lucy's statement.
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william fitch
Owner
www.WeAreSolar.com
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Original Message:
Sent: 01-18-2024 03:16 AM
From: Jay Warmke
Subject: Zoom Discussion - Will Bi-Directional EV Charging become a Reality in 2024 (Solar Noon Tuesday discussion)
William -
As you say, many things to work out before bi-directional charging becomes a widespread reality. I think this discussion was great because we had as a guest the CEO of a car charging firm - so he could lend perspective into what they are dealing with. I believe it will become a reality sooner that we all might imagine. The problem with knowing a lot about a technology is that you see all the reasons it can't work - without imagining why it will work.
Jay Warmke
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Jay Warmke
Owner
Blue Rock Station LLC
Original Message:
Sent: 01-17-2024 03:57 PM
From: william fitch
Subject: Zoom Discussion - Will Bi-Directional EV Charging become a Reality in 2024 (Solar Noon Tuesday discussion)
Maybe. Not having the bi-directional EV charger having its own inverter like they do now, using a "regulated" input switch for EV batteries to use the PV solar array DC input (Somehow adjusting DC voltage differentials for daytime) could cut the bi-directional cost and who gets to be "boss" problem go away. EV battery voltage ranges today are usually not over 600VDC, and usual grid-tie PV solar array voltages are 300-600VDC (Some 1000VDC), so the PV array inverter could "take what it wants" which would most likely be way less than the car is used to supplying while driving. Obviously software and some hardware required, but the expense of another full inverter is gone.
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william fitch
Owner
www.WeAreSolar.com
Original Message:
Sent: 01-17-2024 03:06 PM
From: Elias OUEDRAOGO
Subject: Zoom Discussion - Will Bi-Directional EV Charging become a Reality in 2024 (Solar Noon Tuesday discussion)
EVs batteries look like "low-hanging fruits" but they will be hard to grab in practice. To me, cost and voltage level standardization are the main barriers.
-For fleet operators (Cars, buses, trucks) with an important battery size, more predictable vehicles locations and state of charge profile, it may make more sense to consider bidirectional charging to provide services to the grid. However, for EVs in residential areas, the number of hours/year when the bidirectional feature is used, combined with the relatively small size of the battery may make the system benefit less than the added cost.
-I remember a study published on this platform revealed that overinvesting in solar PV panels and curtailing the output was cheaper than investing in batteries. Also if the future cost of batteries declines as solar panels cost in the past decade, the gymnastic of bidirectional charging may become useless. The impact of bidirectional charging on battery life is not well proven yet to my knowledge. A lot of uncertainties ahead .....
-what I see as possible in the future is to use the EV battery with the solar PV inverter as a backup in off-grid mode.
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Elias OUEDRAOGO
Business Developer
Future Energy Company
Original Message:
Sent: 01-16-2024 01:30 PM
From: Jay Warmke
Subject: Zoom Discussion - Will Bi-Directional EV Charging become a Reality in 2024 (Solar Noon Tuesday discussion)
In addition to recapping the week's solar news, we discuss whether or not bi-directional charging will be a "thing" in 2024.
Each Tuesday at noon (Eastern) solarPVtraining.com hosts a Zoom sessions for students (or anyone, really) interested in solar. Generally discussion focuses on technical questions, problems or troubleshooting - or just what is happening in solar that week.
Join Zoom Meeting each Tuesday at
https://zoom.us/j/91067004366?pwd=b1d...
Meeting ID: 910 6700 4366
Password: 625623
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Jay Warmke
Owner
Blue Rock Station LLC
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