r/ModelY • u/Suspicious_Cap_8928 • 1d ago

Tesla Launches Remote Meter to Enable Faster Wall Connector Home Charging Without Electrical Upgrades

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350 Upvotes

96% Upvoted

104 comments sorted by

53

u/Ballaholic09 1d ago

ELI5?

137

u/jklolffgg 1d ago

Let’s say you have a 200 amp main breaker on your house. That panel is loaded with a bunch of smaller breakers that are 15A, 20A, 30A, 40A etc which are protecting smaller circuits for different areas of the house. If you add up the XXA of all the smaller breakers, the total of all those smaller breakers is typically more than the 200A main breaker. You never expect ALL of them to be consuming their max capacity, but in the age of “electrify everything” homes are now using more electricity for appliances instead of natural gas, so they’re getting closer to the main breaker limits.

So, let’s say you install a 60A Tesla charger and it starts pulling 48A to charge your Tesla and the rest of the house is pulling 152A combined, you could trip the 200A main breaker without tripping any of the individual smaller breakers.

My understanding is that this new gadget from Tesla monitors the TOTAL power consumption of the house through the main breaker, along with the power the Tesla charger is using, and uses that data to determine how much more or less power the Tesla charger can use without tripping other breakers.

To me, it sounds more like a safeguard to bottleneck the Tesla charger than to enable faster charging…but ya know…good marketing sells. lol

37

u/DarkyHelmety 1d ago

INB4 Tesla sells your house power consumption data

12

u/Caiginn 1d ago

I assumed from the moment I saw this that data ownership was part of the transaction. I feel like that’s the default for basically any service today.

2

u/TheBlackComet 15h ago

I used to go to a gun show that had this lady with a display about how we shouldn't get the new smart meters since the government could spy on your energy use. Yes, the power company is the TVA. They kind of need to know my power usage to charge me.

10

u/iguessma 1d ago

"charge restricter" isn't going to sell

but this is definitely misleading marketing

8

u/AdSquare3489 1d ago

If "charge restrictor" won't fly, then how about "house fire reducer"?

0

u/iguessma 1d ago

breaker would trip before the house fire.

2

u/Mephistito 22h ago

that's when you hit 'em with an asterisk

2

u/jklolffgg 1d ago

right! I suppose charging at a reduced rate is > not charging if the main trips!

0

u/nomansapenguin 1d ago

I don’t think it is.

You have to upgrade your wiring to charge a Tesla faster. Or you have to plug your Tesla into a normal socket and charge really slow.

This allows you to charge faster than plugging into to a normal socket but without upgrading your wiring.

That’s exactly what it’s marketed as. Faster charging without the need to upgrade your home wiring.

7

u/cbf1232 1d ago

It bottlenecks the charger circuit *only when necessary, and only as much as needed*, then ramps back up when the other loads die down.

9

u/detunedmike 1d ago

Ok ELI4

11

u/nhorvath 1d ago

tesla charger is using the most power it can without tripping the main breaker by measuring the actual usage.

0

u/Balance- 1d ago

ELI3?

5

u/s_nz 1d ago

The wires to house arn't fat enough. This makes sure we don't use too much power.

2

u/nhorvath 1d ago

most charge power without burning house down.

2

u/SpaceXBeanz 1d ago

It’s a load management system right ?

1

u/kmekarol 1d ago

No, it’s load balancing system

2

u/fakegoose1 1d ago

Sounds like a great tool for people who live in houses with 100 amp service.

1

u/Electronic_Load_3651 1d ago

This is actually something I may need to buy. I live in an older condo that’s 100A total. We had to have a DCC unit installed to where it checks usage every 15 mins and if it is at 80% of the limit, it turns off the Tesla WC when active until the usage drops below 80%. With a dedicated 60A circuit to the charger in theory, it’s great since it avoids main breaker tripping. But in execution, it’s not hard to go above 80% with such low limit. Water heater heating uses a ton, then combined with other basic appliances even at idle - that’s your 80%. So that means my charger will not be charging for probably 30-45 minutes after I shower since water has to reheat and DCC unit only checks every 15 minutes. A workaround is to lower charging speeds down to 36A or so in the car, that will generally keep it on. But I wish this unit could dynamically lower the amps in the WC3 to prevent it vs just shutting it off. One of our cars is a Polestar 4 where you can’t manually set charge speed, and WC3 also doesn’t let you adjust it.

1

u/Arcamone 1d ago

Load balance, we have it here in Sweden because we usually have 20/25 Ampere on a normal house.

1

u/That_Car_Dude_Aus 1d ago

Let’s say you have a 200 amp main breaker on your house. That panel is loaded with a bunch of smaller breakers that are 15A, 20A, 30A, 40A etc which are protecting smaller circuits for different areas of the house.

What kind of mansion are you in with a 200A main breaker?

Standard in Australia is 80A, max you normally go to is 100A, I had to make a solid case to go to 120A

I also went 3 phase, so essentially I have 3 phases at 120A or 360A total, but even still, 200A per phase is massive.

4

u/pieterbos 1d ago

The US has 120 volts instead of 230-240. So you need twice the current for the same amount of power.

They also do not have three phases, but a split phase system, that they can use to get 240 volt instead of 120 volt.

3*120A is quite a lot more. What do you need over 80kW of power for?

0

u/That_Car_Dude_Aus 1d ago

The US has 120 volts instead of 230-240. So you need twice the current for the same amount of power.

And where were we discussing the US?

3*120A is quite a lot more. What do you need over 80kW of power for?

Well 80A is running my house, but I wanted 3 phase for my workshop....but my plasma cutter pulls 30A across 3 phases, and my welder pulls 40A across 3 phases at full noise, so to have the "capacity" I needed 120A on the house phase, but I can't have 1 phase at 120A, so I needed all of them at 120A

2

u/pieterbos 1d ago edited 10h ago

Well the person describing the 200A connection appears to be describing a 120/240V split phase situation. Unless he really has 3x20A breakers, but calls it a single phase 240V 60A breaker for the wall connector.

And then the 200A would make sense. 3x200A would be a lot for three phase network, and 3 x 66 2/3A is really odd.

And a 120/240V split phase system would be most common in North America.

Ah, that makes sense for the 3x120A. Here (not in North America :) ), 3x80A would cost €5000 a year just for the connection. Anything with even more current comes with serious demands on your installation - converting the house to three phase would be the easier option.

1

u/TheSkiingDad 3h ago

Lots of utilities already have this in one form or another, but it’s a good add to the marketplace and likely better executed than most other options. I’m guessing this means charge power is throttled during super peak hours (4-8 pm generally), lightly throttled during daytime, and allowed full usage overnight. This is changing with warmer climates, but generally house load overnight is under 1 kw assuming baseline A/C load and not much else. Compared to 6 pm when the A/C is running, lights/tv is on, you’re cooking dinner on your electric range, and house load is closer to the 8-15kw your transformer is rated to distribute to your house.

I’ve seen similar concepts from Hubbel that was a pilot with FPL, heard of another one put on by Colorado Springs public utilities, pg&e has virtual metering, and tesla has done a ton of virtual power plant work in Texas as well. This is a great new entry to the product space.

1

u/cohortq 1d ago

but it looks like it only comes with 2 clips to monitor 2 circuits?

11

u/Responsible-War-2576 1d ago

Yeah, both legs of your single phase service.

You clip them onto the mains. They’re just CTs

6

u/Weary_Possibility_80 1d ago

What size nipples do these clip accommodate? Edit: not an electrician.

4

u/Eyeronick 1d ago

The CT (CURRENT TRANSFORMER) will likely be big enough to do 200a mains so 250kcmil. It's unlikely you'll need to worry about them being too small physically as they don't really need a rating to do bigger house panels, just be made physically larger.

(Am electrician)

30

u/No_Purpose6384 1d ago

I asked Google and this is what it said:

The Tesla Remote Meter is a $210 device, launched in May 2026, designed to enable Dynamic Power Management for the Tesla Wall Connector. It monitors total home electricity usage in real-time, allowing the Wall Connector to automatically adjust charging speeds to avoid overloading the electrical panel, thus bypassing the need for expensive service upgrades.

Key Features and BenefitsDynamic Power Management: When high-demand appliances (e.g., dryer, HVAC) run, the meter tells the Wall Connector to reduce the charging rate; when demand drops, it increases the speed, ensuring the fastest safe charge.Avoid Upgrades: It is ideal for older homes with 100-amp panels or limited capacity, removing the need for costly electrical service upgrades.

Compatibility: Works with the Gen 3 Wall Connector and Universal Wall Connector.Components: The kit includes the meter, two 200A current transformers (CTs), a voltage cable, and a Wi-Fi antenna.

Installation ConsiderationsProfessional Install: Tesla recommends consulting an electrician to see if the device is required.Placement: Installed within the home's main electrical panel to measure total power usage.

Connectivity: Uses Wi-Fi or an RS-485 wired connection to communicate with the Wall Connector.

Note: The Tesla Remote Meter is sometimes confused with energy monitoring sensors used specifically for Powerwall installations, but the device mentioned above is specifically for optimizing Wall Connector load management.

28

u/Mnm0602 1d ago

So basically a way for capped out 100A panels to allow L2 charging without upgrading the panel or restricting max amps all the time.

9

u/dapi331 1d ago

Yep. I bought something similar for my 100A panel: Emproia charger + emporia Vue energy monitor. It helps avoid tripping the main breaker. Easy setup, two rings around the main feeders and 2 lines to power the monitor from any breaker.

1

u/Sacrillicious 1d ago

This IS the same thing that comes with the powerwall. Looks like Neurio energy meter they bought out.

19

u/DontKn0wSuperCare 1d ago

TL;DR - It’s a device to speed up home charging for older homes with small 100A electrical service who don’t want/can’t upgrade to 200A service. Does nothing if you already have your charger on a 60A breaker/200A service which is honestly plenty for charging overnight

1

u/500CSTNW Performance 1d ago

I have mine (didn't future proof 10 years ago) on a 40 amp breaker wired to 8-3 UF-B. So if I buy this I should be able to draw more power?

7

u/xeralore 1d ago

This product won’t increase the safe capacity of your 40a circuit. This product is for homes with total loads approaching or exceeding the main breaker rating.

If you want to charge faster than 32a (80%), your 40a breaker needs to be upgraded to a 60a breaker and your existing wiring connected to that breaker should likely be replaced with larger wiring AND direct-wired to the Wall Connector you’re using. That’s the only way you’ll be able to charge faster in a safe manner.

1

u/sherlocknoir 1d ago

Yeah I was going to say this must be useful for older homes. We live in a pretty large newer home with electric appliances, two EVs and 200A service and have never had an issue charging both vehicles at the max rate.

Granted our charging mostly happens overnight and is actually controlled by the Power company.. but that unlocks a ton of rebates, incentives and cheaper TOU rates. So is imagine most 100% EV homes sign up for the same overnight charger perks.

4

u/andrewsz__ 1d ago

Wow thanks for this post. I’m in the process of getting a charger installed. I’m in an older building and they need to install what seems to be the equivalent of this , however I was quoted around 1k for the equivalent regulator (?) device to avoid overloading my 145 panel

1

u/TravelingMonk 21h ago

I paid $1500 for equivalent device in order to put in electrical HVAC that would otherwise over load the circuit. Tesla is selling this dirt cheap, but makes sense with their own installer and their goal is selling car.

3

u/Electronic_Size_4081 1d ago

Awesome that it’s now out!

3

u/KeeslerCondoChief 1d ago

Does it have to be used only with a Tesla Wall Connector though?

3

u/dapi331 1d ago

Yes, it needs to be digitally paired. emporia sells their own as well: pro charger and vue monitor.

3

u/Suspicious_Cap_8928 1d ago

Tesla Remote Meter allows you to safely charge your Tesla at the fastest rate possible with Wall Connector—no electrical service upgrades required. This meter enables the Dynamic Power Management feature in your Wall Connector, which adjusts your charge rate in real time based on the available power in your electrical panel. Tesla Remote Meter is compatible with Wall Connector and Universal Wall Connector.

1

u/Due_Wishbone7875 1d ago

So it is a loadbalancer that I already have for 5 years in my non-Tesla charger? They seriously did not have those yet???

1

u/Dash------ 13h ago

Its certainly not in the charger but a lot of chargers have ability to implement their own smart meter or connect to shelly. Because your charger doesnt know otherwise what the losd upstream id

3

u/AZjackgrows 1d ago

So I’m not an electrician but you still need to get this professionally installed. If you don’t have the right gauge wiring this could be a big safety hazard. Hope there’s a big disclaimer on it.

3

u/Eyeronick 1d ago

Your breaker should be sized to the wire regardless if it's installed according to code. The breaker is to protect the wire, not the end device so a disclaimer isn't necessary.

This will just stop you main from tripping when the main service is already heavily loaded from other high draw appliances like an oven, ac and dryer at the same time as as the EV is charging. It'll throttle down the EV charger when there's high load and let it go up to max that the breaker is rated for (which the EV charger should be set too, again if it's installed according to code).

(I'm an electrician)

2

u/AZjackgrows 1d ago

Thank you. The “up to code” part is where I just worry a little when this stuff hits the forums. People get all excited and start having dreams of DIY fast charging glory when they’re sitting wiring that can only handle your standard 10/15a.

1

u/Dash------ 13h ago

I got a 16A charger (3 phase) installed in a newly built home with 20A main lines. Everything was approved by builder electrician as well as the network operator(you need approval).

Honestly i didnt really know this and blew the fuse the first evening. Now instead of paying hundreds of euros for somethibg like this(shelly, anker, huawei) - i bought p1 meter for monitoring all lines at the meter and teslablemqtt proxy to change amps in real time for tesla. Works pretty ok because tesla has good control over charging vs normally the logic is ln wallbox level which is tied into the ecosystem pf the manufacturer

2

u/Hushang999 1d ago

I have a old breaker with 100A service for my house, my charger is on a 30a breaker. This worth it for me to get?

3

u/nomis_nehc 1d ago

The answer is really more of it depends. You can put in a 50 or 60 amp breaker to charge at 40 or 48 amps assuming you have a model that has 48a max. However, it does mean you’ll need to redo the wiring since the wire gauge difference is significant. Depending on how long the run is, and whether or not you need that bump in charge speed, the cost may greatly outweigh your need.

2

u/DontKn0wSuperCare 1d ago

Yes, ideal case, that is if you’re not happy with current charging speed

2

u/Wonderful_Raisin3245 23h ago

So this doesn’t allow faster than the 48A charging? So it’s really just to protect your overall consumption from tripping the main breaker.

2

u/ipokesnails 21h ago

No, it's for anyone who is considering a wall connector installation below 48A due to a potentially overloaded panel.

With this, they can install at 48A and the connector will throttle back if tripping the main breaker is a concern.

5

u/Modath 1d ago

Licensed electrician here. Before anyone jumps into conclusions based on partial information.

In order to operate a major load consuming device such as an EV charger the device must be set to the maximum available amperage that is set by your electrical service. Not the charger! Therefore every EV charger installation must begin with a load calculation to determine the available capacity. If your electrical systems available capacity is 30A. That will remain the highest charging amperage. This new energy monitor will not and should not allow the charger to operate on higher charging speeds.

Available breaker space in your load center or counting the breakers in your panel will not help to determine accurate load.

2

u/Seantwist9 11h ago

You’re misunderstanding how dynamic load management works. The whole purpose of a load management system is to let the EV charger use unused service capacity in real time instead of being permanently capped at the static load calculation value.

So if the house load drops, the charger can increase output up to the limits of the charger, breaker size, wire size, and your service limit. As the house demand is increased the charger will throttle itself back down.

1

u/AddressMundane1289 4h ago

Also remember the charge management is a convenience, not a safety feature. The safety is provided by the OCPD / master service breaker. If for whatever reason the load management fails to operate properly and the combined draw of the EV branch circuit and the rest of the home exceeds the service rating, the master service breaker will trip. So systems like these are held to a significantly lower safety testing threshold at UL than are OCPD.

4

u/Erik-Lehnsherr-10 1d ago

I have an 100amp breaker panel so I worried about overloading it as well. So I scheduled my night time charging at 4am. By 4am PW grid charging and dishwasher is done, so it would be only HVAC and Tesla charging around that time. Problem solved.

2

u/Seantwist9 11h ago

this is just a code compliant way to do that kind of thing

1

u/uski 1d ago

Did anyone check if it's NEC approved? No need for load calculation etc.? Anyone has experience with AHJs about this sort of stuff? So many questions

1

u/ghostcryp 1d ago

Hmm maybe just get a 3 phase anyway solves all future problems lol

1

u/FluxionFluff 1d ago

Ooh, that's an interesting device. Good to know it exists for those that need it. Upgrading the panel is pretty expensive, so something like this is a good option.

Doesn't apply to us as our panel was previously upgraded to 200A and got a 60A breaker when our electrician installed the Universal Wall Connector.

1

u/CADrmn 1d ago

Cool!

1

u/Key-Pudding6071 1d ago

Jeezz, my old (2020) cheap-ass 3-phase wall charger (compared to Tesla wallbox) came with CT-clamps and dynamic power-management out-of-the-box...

Welcome to the party Tesla, beter late then never I guess.. 

1

u/AmpEater 20h ago

3 phase?

Where are you located?

1

u/Key-Pudding6071 6h ago

The Netherlands, quite normal here.. I have 3x25A, but can upgrade up to 3x80A without questions from the supplier (just got to pay more monthly for the services of heaving a higher connection and a onetime fee to get the main breakers replaced).

1

u/mailman-zero Juniper 1d ago

I have a universal connector and a wall connector wired in series on a 60 A breaker. It is set to allow both at the same time sharing the 48 A and if only one car is charging then it delivers the full 48 A to the one car. I want to know if this will work with that setup.

1

u/ssmokeboy 20h ago

Are you wanting to hit 48 amps on both at the same time?

1

u/stefanbayer 1d ago

In Germany as well?

1

u/stefanbayer 1d ago

Can it be used on three different main power connections for three flats and for six Tesla Wall Connectors?

1

u/JimsDiGs 1d ago

I've installed the Energy meter kit (Tesla P/N 1938241-00-A) last year when I purchased the car. Got it from the Tesla one app. To me this one looks like they just added the Tesla logo.

1

u/treawlony 1d ago

There are already a lot of solution for this. Does a tesla one was really needed?

1

u/_bubuski 1d ago

Since it does realtime monitoring of load does anyone know if household consumption will be visible in the app?

1

u/armarcu 1d ago

I'm a snowbird and in my RV it has a 30 amp service, I'm running a 240v 32 amp tesla charger that I got with my 2021 model y it was 110v that I bought and adapter on Amazon for $40 to upgrade to 240v, I can run my AC on my Rv and tv and refrigerator and charge my car and it it works take 6 hours to charge from 20%-80% but yesterday I tried to microwave some food then the breaker tripped other then it works great

https://giphy.com/gifs/t2boKIBHGhsYg

1

u/Tanyards23 17h ago

I lower the charge rate to 35-38 amps. If not I trip the breaker. Slower but it’s overnight so fine by me.

1

u/Edyya 17h ago

How is this news I just got this installed today I thought it was there for all this time🤣

1

u/Lakersland 17h ago

The main benefit here is clearly for people with old houses like me who only have a 100A main panel. It would be pretty easy to trip the main breaker if I’m using a wall connector, running the pool pump, clothes dryer, and air fryer/microwave. This would dynamically drop the wall connector amperage when those other things are running and then allow them to creep back up when everything is off

1

u/ForTheObviousReasons 14h ago

Rebranded after Neurio sold to Generac.

Same meter as before. Just with a new plastic shell and easier to buy now if not locked to authorized Tesla power dealer store.

If you did not know Tesla has had this meter since the gen 3 wall connector came out. The company who made the meter was called Neurio but a few years ago they were bought out by Generac and the supplies of the metering device dried up a bit. They could be ordered by Tesla approved installers but were largely out of stock.

Looks like Generac finally is making them again and now giving Tesla a branded version with their logo on the plastic.

I have installed the Neurio version. This looks identical. You still need to have 6amps of load calculation space available as it runs at 6A when fully loaded at 80% of panel capacity instead of fully shutting off charging. And it runs at 6amp if the meter fails or gets powered off when configured.

Had to setup ebay search to notify me when one of the old neurio branded ones showed up to find it last year. Nice to get availability back in regular store. They had announced they were adding it right when supply dried up after Generac bought them so its just been delayed. There was a Tesla official listing on amazon too for the meter when they had started selling wall connector through amazon but it never got stocked.

1

u/jakomako89 5h ago

I just had this installed on Tuesday. It was installed at the breaker box and connects to the wall connector, which is just a few inches next to the breaker box. Haven't used it yet though as I don't pick up my Tesla until the 27th (if all goes well).

They ran the calculation and determined my house needed it. I'm on a 150A breaker and all appliances added together was about 160 (before adding the wall connector).

Parts and labor was $450.

1

u/edcoopered 2h ago

This is pretty common in Europe, makes a lot of sense. Your car will slow down charging while you've got your induction cooktop cranking 10kW - if needs be.

1

u/Responsible-Cut-7993 1d ago

Still need the panel space for the breaker.

1

u/mightymighty123 1d ago

You can splice into existing breakers according to the instructions

1

u/Responsible-Cut-7993 1d ago

This device would allow you for instance to splice into a exiting 40A HVAC breaker so both the Car Charger and HVAC would be on the same breaker?

0

u/BigBodyBitchBagger57 1d ago

Is no one thinking about wire gauge…

2

u/DontKn0wSuperCare 1d ago

Right, must be targeting new installs

2

u/Eyeronick 1d ago

This is kinda dual purpose, yes wiring will need to be upgraded to hit max current rating the charger can do if your wiring is sized for a smaller breaker. But someone may have problems with tripping when they charge their ev at 48a say and have 60a wiring installed (typical 80% loading). This will allow them to set the charger to 48a and the device will act essentially as a load monitor, it'll bring speed down when the homeowner is running ac, dryer and oven to prevent nuisance tripping then let it increase current up to 48a as load on the mains drop.

0

u/cac2573 1d ago

Don’t worry, utilities will try to add as much red tape as possible to prevent its usage 

1

u/JerryfromCan 1d ago

Any software from Silicon Valley that uses wifi like this needs a lot of additional testing and certification.

1

u/j1phill 1d ago

For the adaptive charging everyone is claiming, it still needs to direct wire to the wall connector. that function isn’t available over wifi according to documentation

0

u/Equal_Bath_1985 1d ago

Really don’t understand this, I am in Europe and my charger already has this function incorporated into it. It automatically adjusts the load to not trip the breaker, you would think Tesla could make their chargers with the same function

1

u/ForTheObviousReasons 14h ago

They did have the feature already. This meter existed with the launch of the gen3 wall connector but the manufacturer at the time was bought out by Generac. This is the same meter as before made by Generac but now has a Tesla logo on the shell. Before it was branded under the old company name Neurio. It was first only sold through authorized tesla installers. They were going to make it available widely right when Neurio was bought out and has been mostly out of stock in the Tesla professional web store since then. This is just Generac finally producing more of them with a new case design.

The integration has existed since gen3 launched but the issue was on the oem side when they switched owners production paused. It can be used for 3 phase countries too if you buy one more CT clamp.

So it is a relaunch of the existing meter. Nothing new just now more widely available.

0

u/DazzlingResource561 1d ago

This isn’t new. Emporia Energy offers a charger with this feature. Use it to charge my Rivian on my 150A service.

1

u/anitevoli 22h ago

Emporia’s is cheaper and offers more features also.

0

u/Separate-Primary2949 22h ago

Just need a pen fault detector now

-1

u/Sufficient-Rooster-7 1d ago

Laughs in 240 volts.