Hi Jerry, You have good points, and I'm not pushing back on those. Dealing with long term outages during natural (or unnatural) disasters is a big challenge with tradeoffs on any route you go. Battery technology is improving rapidly and coming down in cost. If you have a 150 kWh battery in your EV in your driveway already connected to your home for charging purposes, wouldn't you want the flexibility of V2G to keep your home running during an outage? Heck, add a fossil fuel genny or stationary battery if you want. V2G isn't here yet, but it is coming and the possibilities are awesome.
Getting back to Carl's initial question - how do we respond to potential clients who are trying to buy products now? Well, we offer the best choices on the market right now. Hopefully AC-coupling will allow EVs of the future to connect to PV systems through V2G. It's the classic question of whether someone should buy what is available now or wait for new technology. Grid tied PV is mature and works well. Now is a great time to go solar. ESS? Well, we're still in the early adopter phase for the newer gen lithium tech such as what Tesla, SolarEdge, Enphase, SunPower, Generac, etc are offering. Adoption rates for our customers are exceeding 50% pairing ESS with new PV systems. So far these systems are beating my expectations although they are challenging to design and build. But if the grid goes down for multiple days? It will be a mixed bag of some great success stories versus others running out of juice while the grid is still down. Nonetheless, it's a really exciting time to be in the PV and ESS business! August On Thu, Jun 17, 2021 at 6:52 PM Jerry Shafer <[email protected]> wrote: > August have seen it work, sure but l have had customer loose power after > three days of smoke filled sky, no regen and l have the same customers with > EV's then what no escape if the killed the car too. I understand all of it, > we did testing in Hawaii and here in California, in a hail Mary, use what > you got but as a NOP no, Ford is going to try it out, we will see how bad > RTE really is. You might think to just use the battery for peak shaving, > now you need to understand cycle life in your ROI when its getting several > more cycles in a given week vs possible reduction in travel distance on a > full charge over time vs cost to replace said battery due to excessive > cycling. Like l said yes it can be done but we have very good stationary > battery tech so why. But hey that just my opinion > Jerry > NABCEP PV inspector > > On Thu, Jun 17, 2021, 8:34 AM August Goers <[email protected]> wrote: > >> Jerry - there are some key difference between V2G with PV and fuel based >> vehicles and generators. Mainly, the V2G would allow the home to stay on >> when the grid goes down and thus keep the PV system running. The PV system >> could then power the home and charge the vehicle. All of this can be >> controlled and setup in a way that allows plenty of reserve capacity in the >> vehicle for getting out of dodge. It's not ready for primetime yet, but it >> is coming. >> >> August >> >> >> >> >> On Thu, Jun 17, 2021 at 8:06 AM Jerry Shafer <[email protected]> >> wrote: >> >>> Wrenches >>> Would you use the gas in your car to run your genny till empty, much the >>> same, l remember talking about this years ago and I do not recommend doing >>> this, I dont know of any utilities that would alo that. I work in Hawaii >>> and California when we have a PSPS the last thing you want to do is not be >>> able to leave if you have to because you kept the refer cold, its smokey >>> and you have no recharge-ability. >>> Jerry >>> >>> >>> On Thu, Jun 17, 2021, 7:24 AM August Goers <[email protected]> wrote: >>> >>>> Hi Carl - >>>> >>>> V2G (Vehicle to Grid) is one of the most exciting areas of technology >>>> coming down the pipes. It's easy to imagine a day where you can tap into >>>> ~100 kWh or more of storage sitting in your EV and benefit from >>>> bi-directional charging with PV. I'm trying to get my head wrapped around >>>> the standards and how the technology will likely roll out. Here is an >>>> article that explains some of the basics: >>>> >>>> >>>> https://blog.wallbox.com/why-bidirectional-charging-is-the-next-big-thing-for-ev-owners/ >>>> >>>> I think we're at the mercy of the manufacturers to come out with >>>> products that we can then work with. Ford apparently is teaming up with >>>> SunRun to install what must be a Microgrid Interconnect Device (MID) and >>>> inverter for the F150 Lightning. Other manufacturers will likely follow >>>> suit. I know there's a lot of work going into the standards such as the CCS >>>> plug which has J1772 and Quick charge. The Chademo standard came out with >>>> V2G built into the standard, but apparently is falling out of favor. I'm a >>>> little out of the loop on all of this, but am trying to learn. >>>> >>>> The big question coming to mind that we should all be thinking about is >>>> whether permanently installed Energy Storage Systems (ESS) vs V2G makes >>>> more sense for our grid tied clients. Clearly there's not a whole lot we >>>> can do until products are available on the market. But in the next 5 years? >>>> There will be a lot of change. Tesla seems to be sticking with the >>>> permanently installed ESS route with their Powerwall system. Ford really >>>> let the cat out of the bag with their F150 Lightning announcement. Exciting >>>> time ahead! >>>> >>>> August >>>> Luminalt >>>> >>>> On Thu, Jun 17, 2021 at 4:20 AM Carl Adams <[email protected]> >>>> wrote: >>>> >>>>> Hello Wrenches, >>>>> Have any of you looked into Vehicle to Grid systems and how they will >>>>> play with existing solar installation. I have residential customers >>>>> asking questions about how we ensure that our installation is compatible >>>>> with these systems. I've seen announcements from Ford, Nissan, and >>>>> Mitsubishi on their planned releases. >>>>> >>>>> With Kind Regards >>>>> Carl Adams, President >>>>> SunRock Solar, LLC >>>>> 513.290.9072 (mobile) >>>>> 513.766.6025 (office) >>>>> >>>>> _______________________________________________ >>>>> List sponsored by Redwood Alliance >>>>> >>>>> Pay optional member dues here: http://re-wrenches.org >>>>> >>>>> List Address: [email protected] >>>>> >>>>> Change listserver email address & settings: >>>>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>>>> >>>>> There are two list archives for searching. 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When one doesn't work, try the >> other: >> https://www.mail-archive.com/[email protected]/ >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org >> >> _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > >
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