Re: [EVDL] : V2g for DIY EV's (economics)

n there down to 195v DC input (compared to 450 to 500v > normal) so this means as long as about half of the solar panels in any > string are still in sun, then the MPPT is still able to produce max power > from the remaing 7 panels. > > Bob > -Original Message- > From: EV

Re: [EVDL] : V2g for DIY EV's (economics)

-- Original Message -- From: "Robert Bruninga via EV" To: "Electric Vehicle Discussion List" Cc: "Robert Bruninga" Sent: 29-May-20 9:36:40 AM Subject: Re: [EVDL] : V2g for DIY EV's (economics) No, less. Around here, maybe 35% of our electricity come

Re: [EVDL] : V2g for DIY EV's (economics)

ia EV Sent: Thursday, May 28, 2020 8:50 PM To: Electric Vehicle Discussion List Cc: Lee Hart Subject: Re: [EVDL] : V2g for DIY EV's (economics) Mark Abramowitz via EV wrote: > Without energy storage, you actually need *more* energy infrastructure. Yes... But they already *have* the i

Re: [EVDL] : V2g for DIY EV's (economics)

From: EV On Behalf Of Tom Keenan via EV Sent: Thursday, May 28, 2020 11:16 PM To: Electric Vehicle Discussion List Cc: Tom Keenan Subject: Re: [EVDL] : V2g for DIY EV's (economics) For those interested, here is a slightly more detailed write-up of my solar power system at home. The sup

Re: [EVDL] : V2g for DIY EV's (economics)

Wow! What the cost of your system? - Mark Sent from my Fuel Cell powered iPhone > On May 28, 2020, at 8:16 PM, Tom Keenan via EV wrote: > > For those interested, here is a slightly more detailed write-up of my solar > power system at home. > > The supplier for my system is Electriq. They

Re: [EVDL] : V2g for DIY EV's (economics)

They may have it, but they will need more as the amount of renewables increase as you need to address the intermittent loss of those. - Mark Sent from my Fuel Cell powered iPhone > On May 28, 2020, at 5:48 PM, Lee Hart via EV wrote: > > Mark Abramowitz via EV wrote: >> Without energy storag

Re: [EVDL] : V2g for DIY EV's (economics)

Not necessarily for peak load going down. When you have lots of renewables on the grid, unless you have storage to even things out, you need infrastructure to handle the diurnal swings in renewables. When you lose the renewables, you still need to be able to handle the load as well as accept th

Re: [EVDL] : V2g for DIY EV's (economics)

For those interested, here is a slightly more detailed write-up of my solar power system at home. The supplier for my system is Electriq. They provided a Darfon(Panasonic) charger/inverter and the Panasonic batteries. I believe the battery cells are similar to the ones used by Tesla, but am n

Re: [EVDL] : V2g for DIY EV's (economics)

Thomas's post didn't make it to me. I'm pleased to see it completely quoted here. On 5/28/20 8:09 PM, Alan Arrison via EV wrote: Tom, could you give some specifics on this system, or point us to a web page? What battery? What inverter? Thanks, Al On 5/28/2020 1:24 PM, Thomas Keenan via EV

Re: [EVDL] : V2g for DIY EV's (economics)

Thomas Keenan, could you please provide more information on your solar setup? 1. What and how many solar panels 2. What kind and how many batteries We have 1. 24 265 W BenQ (Checz Republic) panels 2. Two SMA Sunny Boy (grid-tied) inverters 3. Tigo Optimizers Each spring and fall we have a month or

Re: [EVDL] : V2g for DIY EV's (economics)

Tom, could you give some specifics on this system, or point us to a web page? What battery? What inverter? Thanks, Al On 5/28/2020 1:24 PM, Thomas Keenan via EV wrote: Where I live, the local utility has some odd rules, but I do get credited $0.06968 for each kWh given back to the grid. I h

Re: [EVDL] : V2g for DIY EV's (economics)

Mark Abramowitz via EV wrote: Without energy storage, you actually need *more* energy infrastructure. Yes... But they already *have* the infrastructure. The utilities want to keep getting money for it. Never mind that it was paid off decades ago. Sort of like wanting to keep driving your old

Re: [EVDL] : V2g for DIY EV's (economics)

On 05/28/2020 14:43, Mark Abramowitz via EV wrote: Without energy storage, you actually need *more* energy infrastructure. Why would you need more infrastructure to handle your peak load going down? -- 73 - Jim Walls - K6CCC j...@k6ccc.org Ofc: 818-548-480

Re: [EVDL] : V2g for DIY EV's (economics)

bout the effects of leaf blowers ? > https://quietcleanseattle.org/ >> > > -- Original Message -- > From: "EVDL Administrator via EV" > To: "Electric Vehicle Discussion List" > Cc: "EVDL Administrator" > Sent: 28-May-20 12:05:00 PM >

Re: [EVDL] : V2g for DIY EV's (economics)

Cc: EVDL Administrator Subject: Re: [EVDL] : V2g for DIY EV's (economics) On 28 May 2020 at 15:52, Peri Hartman via EV wrote: > But to be fair, there is a cost to the utility company since they get > less revenue but still must maintain the same level of infrastructure. > Surely th

Re: [EVDL] : V2g for DIY EV's (economics)

rk. Peri << Want to know about the effects of leaf blowers ? https://quietcleanseattle.org/ >> -- Original Message -- From: "EVDL Administrator via EV" To: "Electric Vehicle Discussion List" Cc: "EVDL Administrator" Sent: 28-May-20 12:05:00

Re: [EVDL] : V2g for DIY EV's (economics)

On 28 May 2020 at 15:52, Peri Hartman via EV wrote: > But to be fair, there is a cost to the utility > company since they get less revenue but still must maintain the same > level of infrastructure. Surely there's a better and fair way to do > this. This is where subsidies come in. If a utili

Re: [EVDL] : V2g for DIY EV's (economics)

ility needs it most is a travesty of utility greed and > illiteracy of the community politcians. (in my humble opinion…) > > > > Bob > > > > *From:* Bobby Keeland > *Sent:* Wednesday, May 27, 2020 4:58 PM > *To:* Electric Vehicle Discussion List > *Cc:* Robert Brunin

Re: [EVDL] : V2g for DIY EV's (economics)

rs ? https://quietcleanseattle.org/ >> -- Original Message -- From: "Robert Bruninga via EV" To: "Electric Vehicle Discussion List" Cc: "Robert Bruninga" Sent: 28-May-20 7:16:30 AM Subject: Re: [EVDL] : V2g for DIY EV's (economics) Wow, that is a travest

Re: [EVDL] : V2g for DIY EV's (economics)

f the cost of the utility... Bob -Original Message- From: EV On Behalf Of Lee Hart via EV Subject: Re: [EVDL] : V2g for DIY EV's Willie via EV wrote: > BTW, I believe someone mentioned that the not produced power when an > inverter "cuts back" must be dissipated som

Re: [EVDL] : V2g for DIY EV's (economics)

; Half the cost of the utility... > > Bob > > -Original Message- > From: EV On Behalf Of Lee Hart via EV > Subject: Re: [EVDL] : V2g for DIY EV's > > Willie via EV wrote: > > BTW, I believe someone mentioned that the not produced power when an > > in

Re: [EVDL] : V2g for DIY EV's (economics)

Robert Bruninga via EV wrote: I disagree. When you make a $10,000 investment in a solar array, any sun that falls on it and does not give you retail value in return for the electricity is truly a wasted economic value. I guess it's wasted if you consider money as "waste". And, if your utility

Re: [EVDL] : V2g for DIY EV's (economics)

. And that is what lead the Solar explosion about a decade ago. No batteries, no maintenance, but economic power for life... at Half the cost of the utility... Bob -Original Message- From: EV On Behalf Of Lee Hart via EV Subject: Re: [EVDL] : V2g for DIY EV's Willie via EV

Re: [EVDL] : V2g for DIY EV's

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Re: [EVDL] : V2g for DIY EV's (light load caution)

. Bob -Original Message- From: EV On Behalf Of Peri Hartman via EV Sent: Wednesday, May 27, 2020 3:43 PM To: Electric Vehicle Discussion List Cc: Peri Hartman Subject: Re: [EVDL] : V2g for DIY EV's Why is this an inverter problem ? If there's no load, then there's no

Re: [EVDL] : V2g for DIY EV's

PM To: ev@lists.evdl.org Cc: Mr. Sharkey Subject: Re: [EVDL] : V2g for DIY EV's > With modern electronics you could react very quickly if the draw > dropped (current flow started to go negative) and essentially never > backfeed the grid. Such a project is already developed

Re: [EVDL] : V2g for DIY EV's

Willie via EV wrote: BTW, I believe someone mentioned that the not produced power when an inverter "cuts back" must be dissipated somewhere as heat. I don't believe that is the case; I believe the inverter can just not produce the available power with no heat generation. I agree. It would be a

Re: [EVDL] : V2g for DIY EV's

illie" Sent: 27-May-20 12:10:32 PM Subject: Re: [EVDL] : V2g for DIY EV's On 5/27/20 1:01 PM, Jay Summet via EV wrote: On 5/26/20 10:55 PM, Alan Arrison via EV wrote: Sounds dangerous and possibly illegal. There is no inverter that can supply the actual power you are using and n

Re: [EVDL] : V2g for DIY EV's

Jay Summet via EV wrote: It is technically possible, all you would need is a current sensor on the main house feed. If the current is going in, your inverter would start adding current to the house wiring until the current flow reached zero. With modern electronics you could react very quickly

Re: [EVDL] : V2g for DIY EV's

> With modern electronics you could react very quickly if the draw > dropped (current flow started to go negative) and essentially never > backfeed the grid. Such a project is already developed and it's Open Source! http://openenergymonitor.org/ I was involved in this project in the very early

Re: [EVDL] : V2g for DIY EV's

On 5/27/20 1:01 PM, Jay Summet via EV wrote: On 5/26/20 10:55 PM, Alan Arrison via EV wrote: Sounds dangerous and possibly illegal. There is no inverter that can supply the actual power you are using and not back-feed the grid. It is technically possible, all you would need is a current

Re: [EVDL] : V2g for DIY EV's

On 5/26/20 10:55 PM, Alan Arrison via EV wrote: Sounds dangerous and possibly illegal. There is no inverter that can supply the actual power you are using and not back-feed the grid. It is technically possible, all you would need is a current sensor on the main house feed. If the current

Re: [EVDL] : V2g for DIY EV's (Grid Tie!)

PM To: ev@lists.evdl.org Cc: Steve Clunn Subject: [EVDL] : V2g for DIY EV's The inverter I'm using actually claims to not back feed to the grid but only to supply power that one is using personally. In the ad they describe the meter running backwards and people getting charged for giving e

Re: [EVDL] : V2g for DIY EV's

n.html > > There are heaps of installations here in Australia near edge of grid where > the utility has placed an administrative 0 export limit. > > Sent from Mail for Windows 10 > > From: Alan Arrison via EV > Sent: Wednesday, 27 May 2020 10:56 AM > To: ev@lists.evdl.

Re: [EVDL] : V2g for DIY EV's

Australia near edge of grid where the utility has placed an administrative 0 export limit. Sent from Mail for Windows 10 From: Alan Arrison via EV Sent: Wednesday, 27 May 2020 10:56 AM To: ev@lists.evdl.org Cc: Alan Arrison Subject: Re: [EVDL] : V2g for DIY EV's Sounds dangerous and possibly il

Re: [EVDL] : V2g for DIY EV's

Sounds dangerous and possibly illegal. There is no inverter that can supply the actual power you are using and not back-feed the grid. On 5/26/2020 7:48 PM, Steve Clunn via EV wrote: The inverter I'm using actually claims to not back feed to the grid but only to supply power that one is using p

[EVDL] : V2g for DIY EV's

The inverter I'm using actually claims to not back feed to the grid but only to supply power that one is using personally. In the ad they describe the meter running backwards and people getting charged for giving electricity so they understand the situation . I'm not sure I believe this claim bec

Re: [EVDL] V2g for DIY EV's

Willie via EV wrote: On 5/25/20 10:25 PM, Robert Bruninga via EV wrote: Even mechanical meters now have a ratchet that wont let the kWh go backwards even if the wheel goes backwards. Which means you get no credit for anything you backfeed. I dont konw when those models came out, but at least

Re: [EVDL] V2g for DIY EV's

On 5/26/20 8:37 AM, Robert Bruninga via EV wrote: Watch the digits! Yes even in Smart meters, the Disk WILL go backwards, but the count will always go up. Even in Mechanical meters for the last 30 years, there is differential gear that will only push the count up no matter which way the disk

Re: [EVDL] V2g for DIY EV's

Watch the digits! Yes even in Smart meters, the Disk WILL go backwards, but the count will always go up. Even in Mechanical meters for the last 30 years, there is differential gear that will only push the count up no matter which way the disk goes. I also did not take the time to watch the digit

Re: [EVDL] V2g for DIY EV's

     Hi Robert and All,             I'm starting a solar shed business, as movable cuts a lot of permitting, engineering, etc costs of a roof version, and checking with my utility, TECO,  a net metering meter is free which reminds me I need to order one installed to test, demonstrate  my system

Re: [EVDL] V2g for DIY EV's

On 5/25/20 10:25 PM, Robert Bruninga via EV wrote: Even mechanical meters now have a ratchet that wont let the kWh go backwards even if the wheel goes backwards. Which means you get no credit for anything you backfeed. I dont konw when those models came out, but at least 30 years ago... Th

Re: [EVDL] V2g for DIY EV's

Even mechanical meters now have a ratchet that wont let the kWh go backwards even if the wheel goes backwards. Which means you get no credit for anything you backfeed. I dont konw when those models came out, but at least 30 years ago... bob On Mon, May 25, 2020 at 3:46 PM Lee Hart via EV wrot

Re: [EVDL] V2g for DIY EV's

Sounds like between and the utility, only one of you had actual data. Sounds like a great small claims court matter. - Mark Sent from my Fuel Cell powered iPhone > On May 25, 2020, at 12:46 PM, Lee Hart via EV wrote: > > Robert Bruninga via EV wrote: >> all meters except NET meters will char

Re: [EVDL] V2g for DIY EV's

On 5/25/20 2:47 PM, Lee Hart via EV wrote: Robert Bruninga via EV wrote: all meters except NET meters will charge you kWh no matter which way the disk goes. ...except for the old mechanical meters, which ran backwards when you generated power. The utilities have "fixed" that little problem

Re: [EVDL] V2g for DIY EV's

Robert Bruninga via EV wrote: all meters except NET meters will charge you kWh no matter which way the disk goes. ...except for the old mechanical meters, which ran backwards when you generated power. The utilities have "fixed" that little problem with their smart-aleck meters. They replace

Re: [EVDL] V2g for DIY EV's

I dont understand how your system matches your house load without backfeeding the grid. Every GT inverter I know has Max-Peak-Power-Tracking (MPPT) which causes the GT inverter to always deliver max rated power no matter what the incoming volts are. So if it connected to something like a battery,

Re: [EVDL] V2g for DIY EV's

On 5/25/20 11:12 AM, Peri Hartman via EV wrote: So, how does your system work ? I'm not following. Is this correct: you have a solar panel system which first powers your home, through a grid tie inverter. If there is excess power from the panels, that charges your cars. If there is insuffic

Re: [EVDL] V2g for DIY EV's

your home ? Peri << Want to know about the effects of leaf blowers ? https://quietcleanseattle.org/ >> -- Original Message -- From: "Steve Clunn via EV" To: ev@lists.evdl.org Cc: "Steve Clunn" Sent: 24-May-20 2:06:58 PM Subject: [EVDL] V2g for DIY EV

[EVDL] V2g for DIY EV's

I found a grid tie inverter 1 KW for $300 that will run on 96 to about 140 volts. Reconfigured three cars to run on 30 cells and arranged my 15 KW of solar panels to the same voltage. Most of the time all cars are plugged in charging and powering the grid tie inverter twenty-four hours a day. This