Multi-EV Households

Multi-EV Households

Any multi-EV households out there?--in a couple of years, we could be looking at a Model S, a Model X and a Nissan Leaf parked in our driveway. How are folks handling charging (single charger, multiple chargers), how many charging outlets, and did anyone need to upgrade utility service or house wiring?


Theresa | July 22, 2013

As one who owns both a Roadster and an S I qualify. I am sure there are other dual Tesla owners and I know there is at least one dual S owner.

Theresa | July 22, 2013

I forgot to answer the second part of your question. My household driving habits allow me to be quite happy having just one 14-50 outlet for both cars.

mvannah | July 22, 2013

We have the Model S and a Nissan Leaf. Hopefully the Model X will be ready when the Nissan lease expires at the end of 2014. We didn't need to update our electrical service because it already had 400A service to handle our air conditioning needs. I had dual NEMA 14-50 outlets installed so we will be ready for the Model X. The 2012 Nissan can only handle a 20 Amp circuit (3300W max), which I will leave as a backup 240V circuit in case I have a problem with one of the 14-50 outlets.

stephen.kamichik | July 22, 2013

I have a model S and the wife is getting a smart fortwo next month. We have a 14-50 outlet for the model S and will use 110 volt outlet for the smart fortwo.

stevenmaifert | July 22, 2013

We are an all EV family, with a ModS and a Nissan Leaf. ModS charges on the NEMA 14-50, Leaf charges on the 120V trickle charger that comes with the car as we seldom drive it more than 40 miles per day, and an overnight trickle charge is all we need.

mjs | July 22, 2013

I have an S and a Roadster. The Roadster is not my daily driver, so I leave it plugged in to a standard outlet.

Robert Hodgen | July 22, 2013

We've had a Chevy Volt for the last year and a half, and we have a Model S about 3 to 4 weeks from delivery. We will keep the Volt as our second car and probably put a lot fewer miles on it!

JPPTM | July 22, 2013

We got SolarCity to install 2 NEMA 14-50s (1 in each garage) as part of our upcoming PV solar install. We have 1 Model S and expect to get the 2nd in the not too distant future.

brandtlings | July 22, 2013

We have 2 S's and have had 2 HPWC's installed. 200A service to the garage on a separate meter from the house. Nice, since we only use the garage service to charge and run the garage we stay in the lower ranges of the fee schedule.

Chappyshirt | July 22, 2013

I have a volt, model s, and Honda odyssey... Hope to get a supercharger network going to replace the Honda with a model x. The volt is on a regular plug, the tesla on a nema 14-50.

wildcatzoo | July 22, 2013

We have a Leaf, S, and Zero DS electric motorcycle. The Model S gets the level 2 Schneider charger we installed for the Leaf, the Leaf now gets a 110 V trickle charge (or the schneider if we back it in), and the motorcycle got banished to the back patio covered area as the S is wider than the car it replaced.

We may install a 14-50 and use it for the S in the future.

djp | July 22, 2013

We have a LEAF and a MS. Clipper Creek CS-100 charger takes care of both

KendallPB | July 22, 2013

I have a Model S and the HPWC. If my other half's next car, or next-next car, is an EV, it'll probably (hopefully!) be a Tesla--one of the reasons we got the HPWC. In that case, given our different schedules, we'll charge one and then whoever's up later (these days the other half, but it used to always be me) would simply swap the cable when the first car's done charging. This solution wouldn't work for everyone, but it would for us if we eventually, probably, have two Teslas and remain on fairly different work/sleep schedules.

skymaster | July 23, 2013

We have a 6-50 to charge our two Model S's, and a level 2 to charge our Volt or Model S. When our girls start driving in a few years, we will have more EV's around. We hate the ICE!

dtesla | July 23, 2013

When my wife and I bought the Model S we though we need an ICE car. We now drive the Model S everywhere and have recently decided to ditch the ICE for a second Tesla. We will most likely wait for the Gen III or possibly a Model X.

My wife would like her own charger. We already have 125A sub-panel in the garage. So she will get her own charger.

tranhv68 | July 23, 2013

Nissan Leaf and P85. Got the Leaf first because I was still waiting for my Model S.

tranhv68 | July 23, 2013

Nema 14-50 for Model S and Nema 6-50 for GE Wattstation for Leaf. I have a gas dryer so I used the 240V30A breaker for an electric dryer. I also have a gas cooktop. so I used the 240V50A breaker for a electric cooktop. No upgrades necessary.

tranhv68 | July 23, 2013

I will get the model X in 2014/2015. Definitely 3 GenIII's for my triplets. And most important, a refresh of the Tesla Roadster that will probably be awesome. My car buying decisions have already been made for the next decade. No point in any more car magazines or auto shows. It think I speak for a lot of people.

DarrellH | August 22, 2013

We have a 4-year-old Roadster and a 1-year-old Model S. Though we bought the HPWC, we haven't installed it yet. We use the Roadster charger for both cars. It isn't often we need to charge both in the same day, so this works well. If we do need to charge both at the same time, we have a 14-50 available for one of the cars. Work well and we won't be going back to the ICE age.

brian g | August 22, 2013

leaf already in the garage and waiting for our right hand drive model s arriving spring 2014 in england to make it a completely electric garage. (s will replace the current prius.)

@wildcatzoo - impressed. might join you with a zero motorcycle as well. could entice me back on 2 wheels - after an 8 year gap.

brian g | August 22, 2013

oops forgot to answer the second part: no upgrade to what we have currently at the house for our leaf. will look again when the model s arrives but we think that we will be ok with what we have. (we have 32 solar panels on the house so are happy with slow charging. it suits the way we live and work too.)

ThorensP | August 22, 2013

We have 2 Fiat 500es and 1 Model S. Solar Power added this month. We no longer have an ICE car. Works for us.

Robert Hodgen | August 22, 2013

We've had a Volt for a year and a half and our Model S for three days. Probably replace the Volt with a Model E. No more ICE for us!

Brian H | August 22, 2013

Vanity plate suggestion: NOPTTPTT

Kauai | August 22, 2013

We have two model S and two long commutes (50-70miles), but got by fine with one 14-50 outlet and some opportunistic on the go charging for 5 months. For 3 months of home renovation, we have used a temporary two 14-50 outlet setup at night. The construction crew uses them during the day.

The future is one HPWC for quick charge convenience (its been in a box for months waiting for the renovation), and a 14-50 outlet in the garage, as well as, an additional 14-50 outside to cover contingencies, e.g. more EVs, visiting EVs, garage access temporarily blocked. I think of it as convenient overkill ;) These will all be on a separate 200amp EV panel.

Tom Muadib | August 22, 2013

I have had my Model S for 9 months and the wife was going to wait for the Model E. After finally driving my car, she could wait no longer. She just ordered her Model S today! We hope to share one 14-50.

sergiyz | August 22, 2013

It's mostly the electrical bill that you should be worried about.
If you're driving 60 miles per day, that's about 30kWh.
If you're up to 120 miles a day, that's 60kWh.
At 60kWh a day and 34c per kWh (PG&E tier 3 rate) you're looking at ~$600 a month bill, and that doesn't cover whatever else you're consuming for non-driving needs.
Having solar changes the equation dramatically in your favor, provided you either produce enough to cover all of it or at least enough to keep you in tier1.

JPPTM | August 22, 2013

You really need solar if you are charging @ home ( least for us under the thumb of PG&E).

rbgliny | August 22, 2013

1 S and one to be delivered in a few weeks. We will trade in our last ICE and hope to never have to own one again. Currently one 14-50 but will see how the charging scheduling goes before we consider adding another one.

zero mpg | August 22, 2013

We'll add an X to the existing S when available and I spent a good deal of time thinking about how I would charge both overnight given regular 100 mile days on each car. I settled on a hpwc for one charging station (80amp breaker off of a 200 amp main panel) and a 6-50 for the other station. The plan is to use a PLC (programmable logic controller) and contactors to take the single 80 amp feed from the main and control which station gets electrified when; e.g., 6-50 is hot from midnight to 3:00am and then the hpwc is hot from 3:00am to midnight allowing day charging on the hpwc as needed. With that as the design, i researched plc's but it started to get a bit complicated for me as a diy project (no knowledge of programming plc's) and the urgency wasn't there. Will most likely pick this up again next year. Anyone out there want to help select plc components, contactors, and write some community code ;)

Dr. Pete | April 27, 2015

We have an S85 and a P85D which share a single NEMA (no, not NEMATODE, you stupid spell-checker!) 14-50 outlet in our garage. Since the second Tesla (the P85D) arrived four months ago, we have not had any charging conflicts. | April 27, 2015

Funny how much the landscape has changed since I first posted this.

We are awaiting our Model X (hopefully around the holidays), still have not decided what we are going to do.

cquail | April 28, 2015

Our family has 2011 Nissan Leaf (27K miles), 2012 Volt (57K miles), and 2015 Tesla S85D that is one week old.

Brian H | April 28, 2015

Juggling priorities, and trying to find the simplest routine that won't seriously inconvenience anyone, will be the first phase. But you many end up sacrificing something. Critical to know mi/day for each car to decide what to do.

gras | April 29, 2015

My darling bride drives a 2012 LEAF (6.6kW) that charges each night on a 50A AeroVironment charger. My S85 has dual chargers and uses a 100A HPWC. I had dedicated lines pulled from my 400A service panel to each of the chargers. We are very happy with the result; each of us plugs in when we get home from work and the cars charge over night.

Madatgascar | April 29, 2015

We have a P85 and P85D and share the same NEMA outlet. I charge by night, she by day, no problems so far.

pattymac | April 29, 2015

2012 Leaf SL
2013 Leaf SL
2014 Model S85
Blink charger on a 40A circuit (given to us when we got the 2012 Leaf)
NEMA 14-50 on a 50A circuit. Both chargers are on a 100A sub-panel.
We normally use the 120V charger for the 2012 Leaf, which is adequate considering it's only used about 15 miles per day (daughter commutes to school).

Kunal | April 29, 2015

We have 2 Model S (P85 and P85D). Each car drives >40miles per day.
P85 single charger hardware
P85D dual charger hardware
Model X reservation holders, so we could be all EV in the next couple of years.

3 car garage with NEMA 14-50 in each bay on the same 50Amp circuit, so only one car can charge at a time at 40A
Would have to put in a full new power panel at significant expense to support 100A service, so did not do it.

Both cars are plugged in when we get home
P85 is set to charge when plugged in
P85D is set to charge starting at 2am (P85 is done charging by then)

So far only one situation where both cars tried to charge at the same time and the breaker tripped.

What would be great to have is not only a start time but a stop time option in the interface to avoid contention when 2 cars share the same circuit.

jeffnee | April 29, 2015

We have had our Model S and a Nissan Leaf. When the Leaf went off lease we got a RAV4 EV. The Tesla is the daily driver so it get's the L2 charger in the garage and the RAV gets plugged into a 120v outlet with the mobile charger that came with the car. Same as the Leaf did. Occasionally the "other" car will get a quicker charge in the garage when needed. We use the RAV4 on the weekends more than the Tesla to run errands and do Costco trips. So on Friday when I know we won't need to use the Tesla much over the weekend and if the RAV is not fully charged (because I'm the only one in the family who remembers to plug it in) I'll charge the other car on Friday night or Saturday morning.

Rocky_H | April 29, 2015

@Kunal, I did not think code allows having two 240V outlets active on one circuit. I thought it had to be one dedicated outlet per breaker for those high voltage circuits, and the way to work that was to have an A/B transfer switch, so only one outlet would be live at a time. But maybe I'm mistaken.

sklancha | April 29, 2015

we just added a Leaf to our fleet. i rarely need to charge the tesla at home, so we havent had problems with sharing the sole 14-50. the LEAF needs to be charged pretty much any day that we use it. i had the cord modified so we can plug in 110 or the 14-50. On the rasre occassion that both need to be charged at home, whoever needs to be charged the fastest, gets the 14-50.

we havent had a detectable increase in the electric bill with the tesla since we dont charge often at home... and seem to stay out a lot more (thus less general use of electricity. the predominently charges at home, so i guess i will start noticing it on the electric bill now... kind of ironic since ive added 4000 miles on the tesla and only a couple hundred on the leaf

sklancha | April 29, 2015

the LEAF predominently charges at home

easydjr | April 29, 2015

We have an early Model S P85 (Jan'13) and a Toyoto RAV4 EV (Dec'12), both fed by our solar system (as well as our entire home needs). We have two 240 outlets installed in our garage by Solarcity (who installed our solar system). All our driving is fed by our solar --- no cost now since we own the solar. The Tesla is fed by our Travel Charger. The RAV4 has a Leviton charger plugged into the 240v outlet. Saves us ~$6000 a year in gasoline cost. Long since paid off the solar. Cannot understand why everyone doesn't do this???

Madatgascar | April 29, 2015

Easydjr - because we are forbidden. All our solar power has to go to the grid, our utility pays us whatever they feel like for the net generation. Shortly after we installed our 8kW solar system the utility changed the peak hour definition and their rates, so we still pay the same monthly bill as before.

Can't wait for Tesla's home battery.

Brian H | April 29, 2015

If you know there will be contention you can limit the MS on-screen. But you'd need to return it to normal later, as it would "remember" the lower setting from then on, otherwise.

rbgliny | April 30, 2015

An 85s and an 85D. 2 14-50 hookups in the garage. 12,000 kWh solar panel system. We do have a Toyota 4x4 for the winter weather and utility purposes.

Madatgascar | April 30, 2015

One frustration with two Model S: when you push the button on the charge cable, both cars' charge ports pop open, so you have squeeze between the cars to close the other one. Cry me a river, as mclary would say.

BoxcarX | April 30, 2015

I have an S85D and a Cayenne S E-Hybrid. Until I pipe a second 240 to the garage, I have the Cayenne charging from 6 PM to 1 AM and then the Tesla from 1 AM to whenever it is full. I plan on looking into solar and am also very curious as to what Elon is going to announce later today.

BoxcarX | April 30, 2015
RonaldA | April 30, 2015

Have a roadster sport and model s p85. Waiting for model x. Will probably add a third tesla charger right now have a roadster hpc and a models hpc. Would add another model s hpc