Valdemar
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Location: Oak Park, CA

SolarEdge EV Charging Inverter

Wed May 23, 2018 9:25 am

'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
-0CB(66.14AHr)@87.5k/54mo (BBB), -1CB(53.92Ahr)@140k/29mo,
53.92AHr, SOH 84.5%, 140k miles

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goldbrick
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Leaf Number: 311806
Location: Colorado front range

Re: SolarEdge EV Charging Inverter

Wed May 23, 2018 9:50 am

One less piece of equipment on the wall is always a good thing but I'm looking forward to the day when it could operate as both EVSE from the panel to charge the car or as an inverter from the car to power the panel.

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davewill
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Location: San Diego, CA, US

Re: SolarEdge EV Charging Inverter

Wed May 23, 2018 10:59 am

Sounds a bit dubious to me. If your EVSE craps out, you then have to buy a new solar inverter? Or vice versa? Also, placement of your EVSE is chosen to make it easy to plug into the car and your solar inverter placement is usually chosen to make the install easy, cheap and aesthetically pleasing. How often are those in the same place? I guess there's an edge case where it keeps someone from having to upgrade their panel, but...
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DarthPuppy
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Re: SolarEdge EV Charging Inverter

Wed May 23, 2018 11:36 am

Good points Davewill.

I thought solar inverters were usually on an outside wall to help with cooling. Aren't EVSEs usually inside the garage for convenience to the EV and to keep them dry?

I looked at a townhome complex that had solar pre-installed for every unit. The inverter was in the garage. But those were really small inverters as the amount of solar for the home was maybe 2.4kw in panels. So heat management for the inverter probably wasn't that much of problem given the small amount of power being handled.

I'm not an engineer so I could be quite wrong on these points.
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Phatcat73
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Location: Buffalo Grove, Il

Re: SolarEdge EV Charging Inverter

Wed May 23, 2018 1:53 pm

I don’t see much benefit to this aside from saving a panel upgrade. I’m sure this thing is pricey as well offsetting some of the other EVSE install costs.
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davewill
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Re: SolarEdge EV Charging Inverter

Wed May 23, 2018 7:42 pm

Phatcat73 wrote:I don’t see much benefit to this aside from saving a panel upgrade. I’m sure this thing is pricey as well offsetting some of the other EVSE install costs.

I'm not sure you couldn't accomplish the same thing by putting an EVSE and a solar inverter together on a subpanel, anyway.
2014 Rav4 EV, Blizzard Pearl White
2011 LEAF SL w/QC, Blue Ocean, returned at end of lease

Valdemar
Posts: 2487
Joined: Tue May 10, 2011 10:32 pm
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Location: Oak Park, CA

Re: SolarEdge EV Charging Inverter

Wed May 23, 2018 8:39 pm

All good points. I still think such a unit may work well for smaller solar arrays (less than 5-6kW?) and lower installation costs, given the EVSE and the inverter can be in one place. It has a 12 year warranty and SolarEdge is doing pretty well these days, I doubt they will be going out of business any time soon. Extended warranties are also available, and many often buy them for the inverters, the fact it also covers the EVSE is a nice bonus IMO. Not sure if all cities allow solar to be on a subpanel.
'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
-0CB(66.14AHr)@87.5k/54mo (BBB), -1CB(53.92Ahr)@140k/29mo,
53.92AHr, SOH 84.5%, 140k miles

9kW Solar

TheMagster
Posts: 16
Joined: Sat Sep 01, 2018 8:59 am
Delivery Date: 24 Aug 2018
Leaf Number: 328283

Re: SolarEdge EV Charging Inverter

Wed Sep 19, 2018 10:55 pm

I just started looking at this today, I'm trying to determine if this is worthwhile, or a waste of money. As I understand it, it is a 7600W grid-tie inverter and a level 2 EVSE combined into one unit. I chatted with a rep at wholesalesolar about it, and told me that it will prioritize usage of power coming from the solar panels like this:
1) first priority is to charge your car
2) second priority is to feed the grid in your home (it connects to your main breaker and will feed power to whatever appliances are running in your house)
3) third priority is to feed the utility grid (sell power back to the power company)

That makes sense to me, and it could be especially advantageous if you are able to charge your car during the day and if your utility pays you a low rate for electricity that you feed back into the grid. For example, if you pay $0.12 per kwh and your utility buys back power at $0.03 per kwh, then this device would be effectively charging your car at the $0.03 per kwh rate, netting you a savings of $0.09 per kwh.

Downsides include: there's no option for a battery backup system, as this is a grid-tie inverter only. Your car would need to be able to charge in your garage during the daylight hours for the above scenario to work (so doesn't makes sense for someone that commutes to work in their EV). There's also a slight bit of extra wear and tear on the EV battery, since you would be charging during the hottest part of the day. Also your EVSE would be permanently installed in your garage, and not portable. You would need a second inverter if your solar system was over 7.6 kw.

I think this device could make a lot of sense for a solar carpark, something that a business might offer its employees. I'm not sure it makes sense for the average person to have at home though.

For me personally, I work from home, so I would be able to charge during the daylight hours most of the time. I live in the Pacific Northwest and charge in a garage, so temps wouldn't be an issue. But we have long, cloudy winters here, so I think it would only really benefit me during the summer months.

Initial cost is pretty high, the unit costs $2400 at the moment ($2k for the inverter, $400 for the EVSE cable...they are sold separately). An equivalent 7600W grid-tie inverter (by the same manufacturer) without the built-in EVSE costs $1575. So effectively you're paying $825 for the EVSE component of it, which seems pretty steep to me, especially since it isn't portable. It is a 40A EVSE, which is higher than most (can the Leaf handle charging at 40A?).

The other area for potential savings that they allude to is in the reduced cost of install. I'm planning to install my solar system myself as much as possible, but I'm required to have an electrician hook up all the wiring. With a traditional system I believe I would have to pay the electrician to install a sub-panel in my garage, then wire up a grid-tie inverter and EVSE on two separate circuits on that sub-panel. The cost of labor on all of that might outweigh the added cost of the 'luxury' of everything being in one box, with no additional wiring needed.

Thoughts?
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Valdemar
Posts: 2487
Joined: Tue May 10, 2011 10:32 pm
Delivery Date: 09 Sep 2011
Location: Oak Park, CA

Re: SolarEdge EV Charging Inverter

Thu Sep 20, 2018 1:33 pm

^^^ Do you have NEM (Net Energy Metering) in your state? If so then your usage considerations don't really apply.
'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
-0CB(66.14AHr)@87.5k/54mo (BBB), -1CB(53.92Ahr)@140k/29mo,
53.92AHr, SOH 84.5%, 140k miles

9kW Solar

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EVDRIVER
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Re: SolarEdge EV Charging Inverter

Thu Sep 20, 2018 3:29 pm

I would not buy a solar inverter unless it is made from a company with a proven track record.

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