Powerwall 2 installation: Costs and CA SGIP rebate

Powerwall 2 installation: Costs and CA SGIP rebate

I was thinking about getting a Powerwall 2 installed. Can someone who has the Powerwall installed (2 or the previous gen) advise what the installation cost was? Also has anybody who has installed in CA know if this installation would be eligible for the CA SGIP rebate? Thanks.

N7RZBModel3 | 13 april 2017

Along similar lines, I 'reserved' a Powerwall 2 on the Tesla site . I received a call from Tesla a couple weeks back, and was pushed to do something like a 'site survey.' I am concluding that I didn't just put in an order for a Powerwall 2, but instead for a Powerwall 2 to be installed by Tesla. Anyone know? I like to open bids for installation of items, and would lean toward the company which installed my solar panels.

Dcp9142 | 13 april 2017

The number of us who have active powerwall 2 orders who have reached installation is vanishingly small. The email that I recently got from Tesla says that this will be eligible for CA SGIP rebate, which is really good news.

TiburonTesla | 16 april 2017

I have gone through the process and received the quote/contract from Tesla to docusign. Upon looking at the costs though, i am having second thoughts. Not sure it if is worth it. $25k total for 4 powerwalls installed. $22k of that is for the powerwalls. The balance is for installation, taxes, etc...

The site survey is required so they can determine design needs and installation costs.

Anyone have one installed yet that they can tell us about?

Tesla-David | 18 april 2017

I too am waiting to have my Powerwall-2 installation in NW Washington. I have called them repeatedly (650-681-5100, ext 2) to try and get feedback on when they might be installing in Seattle area, but have not been contacted by Tesla to date to even arrange a site survey. It has been one long frustrating process, but I will continue to hang in there, as I think it will be worthwhile. I also would very much like to hear back from anyone who has had their Powerwall-2 installation completed, and any details they can provide. Thanks.

Mike83 | 18 april 2017

Tesla-David. I hope you get it soon. I want to know how you like it. We are going to wait for the whole Solar Tiles along with the Powerwall after we buy the M3. We are looking for a lot to build on. Haven't found a suitable one yet.

Tesla-David | 18 april 2017

Thanks Mike83, what you are doing is absolutely exciting. I can't wait to hear about your project when it is completed. Good luck on your search for a suitable site.

dswanson | 18 april 2017

I put in a reservation for a powerwall and have gone through the site survey (only needed to send some photos of my electrical panel, etc). Tesla / Solar City came back with a contract for installation in the amount of $7130.50. As for the SGIP, I learned today that I would need to sign the contract withTesla in order for them to submit the SGIP application. Once signed, the $500 deposit is non-refundable. Since any SGIP incentive is not guaranteed, I'm not sure that I'll go forward with the powerwall.

dswanson | 18 april 2017

Correction. The total contract cost is $7630.50, not $7130.50

mark.willing | 19 april 2017

Seems to me that for all the great, innovative ideas and products that Tesla has to offer,...they seemed to have really dropped the ball with regards to the roll out. People really get pissed off with spending their hard-earned money on deposits, then only to leave them hanging because you don't even have installers lined up. Sorry, but that should have been nailed down sometime last year. I am in West Michigan. We have great solar energy companies throughout Michigan,...folks that do PV panels, inverters, generators, battery storage, solar heating, etc,...and have for over 10 years,...but for some reason, are not installers for Tesla. So now you've got the very few electric companies (two) that are dealing with Tesla charging stations,...with zero experience with solar energy systems,...expected to install my Powerwalls and integrate it with my inverter and PV system. I am quite concerned someone without any experience is going to screw something up. I am wondering if I should have my solar installer come in (pay them for their time) and oversee the project.

mark.willing | 19 april 2017

Seems to me that for all the great, innovative ideas and products that Tesla has to offer,...they seemed to have really dropped the ball with regards to the roll out. People really get pissed off with spending their hard-earned money on deposits, then only to leave them hanging because you don't even have installers lined up. Sorry, but that should have been nailed down sometime last year. I am in West Michigan. We have great solar energy companies throughout Michigan,...folks that do PV panels, inverters, generators, battery storage, solar heating, etc,...and have for over 10 years,...but for some reason, are not installers for Tesla. So now you've got the very few electric companies (two) that are dealing with Tesla charging stations,...with zero experience with solar energy systems,...expected to install my Powerwalls and integrate it with my inverter and PV system. I am quite concerned someone without any experience is going to screw something up. I am wondering if I should have my solar installer come in (pay them for their time) and oversee the project.

mark.willing | 19 april 2017

click "save" once, twice,...not intentional.

Tesla-David | 20 april 2017

@mark.willing, I totally agree with your assessment, which echoes my frustration. Tesla just confirmed your analysis, by informing me that one of the reasons they have not begun to initiate the installations in Washington State, is the lack of trained installers. I discussed this issue with several local solar installers, who had contacted Tesla about getting trained to do the installations, and were rebuffed by Tesla. Not sure what is going on, but I told Tesla representative yesterday, that they need to get their act together, as there are quite a few disgruntled customers. I initially signed up 1.5 years ago to get a Powerwall installed, and the wait is getting tiresome without any positive action.

longlakeis | 20 april 2017

New construction and ordered units yesterday for Eastern Washington. Builder wants info to incorporate the units into construction. Interesting to see how it pans out.

Mike83 | 20 april 2017

New App that has PowerWall, Model S/X and Solar all integrated. This is cool.

Tesla-David | 21 april 2017

Thanks Mike, makes me want the Powerwall-2 installation even more!

mark.willing | 22 april 2017

@Tesla-David,...I just had a conversation with a solar energy specialist in Michigan, here. No names, but this particular company has been doing solar installations for over 15 years, and specializes in battery storage, offering anything from lead acid to lithium-ion battery banks (yes, there are several different companies that make lithium-ion batteries for residential and commercial storage). Tesla is about 10 years behind when it comes to the market. But, due to their production capacity, can offer their batteries at a substantially lower cost per kWh. At any rate, this company has done work for Tesla installing their charging stations and even Powerwall 1s, but this time around, their application to be an installer has been received, but with no further communication from Tesla. Here is a company, that is and has been doing these installations for many years, working with many battery companies, with great success, is a technical resource in the midwestern US, but not good enough for Tesla to be a certified installer. Tesla would rather go with electrician's with ZERO experience with battery storage and solar energy system design and application. How schizophrenic is that? I want people with experience doing my install that can troubleshoot and give technical advice. One would think that would also be in Tesla's best interest, as well. So, week I will call Tesla and see how far up I can go up their chain of command to get my installer's application pushed through. Otherwise, I will still go with my installer,...but with a different lithium-ion battery company. I will pay more, but sometimes, the bull-s**t talks and the money walks. I have 2 Powerwalls on order,...I'll just get my $1000 back and in not so many nice words tell them they totally dropped the ball, and I will be on social media talking.

Tesla-David | 22 april 2017

Thanks @mark.willing. I guess I am not ready to pull the plug yet, as I figure they are still getting organized after the merger with Solar City. I have contacted two highly reputable solar providers here in NW, one of which did my solar installation 4+ years ago, both of which indicated they are interested in getting the training for Powerwall-2 installation. I gave them a direct contact who I have spoken with twice, who may be able to help them in this effort. I am not sure how much longer I am willing to wait, but will wait to hear back from these solar providers on their efforts to get the training.

BrokerDon | 23 april 2017

Is it possible to add both solar AND Powerwall(s) concurrently to get the SGIP rebate on our SCE electrified SoCal single family residence?

If so will Solar City FINALLY install on houses with Spanish tile roofs like ours so I can just have ONE contractor do both the solar AND Powerwall installations?

If not, what solar installers would you recommend for a 7kWh solar systemon a Spanish tile roof in Orange County?

Earl and Nagin ... | 23 april 2017

Generally, the installers seem to prefer to add both solar and Powerwall concurrently. I did not realize that Solar City wouldn't install on tile roofs though. I do know that solar optimum ( installs both in OC but I don't have any experience with their work.
I think you probably meant to say a "7 kW solar system", not a "7 kWh solar system" Keep in mind the difference between power and energy: One buys solar production in terms of spec-plate power (measured in kilowatts or kW), while one buys battery storage in terms of its energy capacity (measured in kilowatt hours or kWh). Remember that in OC California, an optimally facing solar system will get you about 4.8 kWh of energy per day per kw of spec-plate power on your solar so a 33 kWh battery would store an average day's energy. Your mileage will vary depending on how your array is facing and some other factors and will vary between ~40% above and below that number depending on the time of year and weather.

BrokerDon | 23 april 2017

@Earl and Nagin ...

Thanks for the correction! Yes I meant "7 kW solar system", not "7 kWh solar system". Great catch!

Fortunately our roof faces almost perfectly south with zero shading... except for the occasional coastal low clouds & fog. Our monthly SCE usage is around 800 kWh which last month consisted of:

• On peak 102
• Off peak 230
• Super off peak 445 (mostly our Tesla Model S P85D charging)
Total electricity usage this month in kWh 777

BrokerDon | 23 april 2017

Should I put PowerWall 2 deposit order in? If so, how many?

bryan.whitton | 23 april 2017

You should consider the Darfon Solar's H200 for LiFePO4 batteries. 4000 recharge count with 100% DoD. Can support backup or grid support. Comes with a hybrid inverter with no need for an additional PV inverter. The H100 uses lead-acid batteries and is recommended for backup.

To clarify I am the Product manager for the H100, H200 and H5000 hybrid PV/Battery products.


Earl and Nagin ... | 23 april 2017

Its very difficult to come up with an airtight answer since so much depends on so many things.
The main issue for you will probably depend on how much of your on-peak and off-peak usage is while the sun is shining brightly. It also depends on SCE policy in the future.
Ideally, for your benefit, I believe you'd look at how many excess kWh you'll generate daily at off-peak rates and compare that with your daily on-peak consumption from the grid. The difference between your off-peak sale to the grid minus your on-peak consumption from the grid will be the amount lost between on and off peak each day. You can then look at the cost of a PowerWall and see if that cost offsets your daily on/off peak loss.
The big unknown of course, is what SCE will do in the future with rates. When we first started TOU rates with SCE, the peak hours were from 10 am to 6 pm. A few years later, they shifted it so that peak was from 12 noon to 8 pm. This makes sense for SCE's benefit given the solar 'duck curve' but it means we tend to need on-peak energy from the grid to cool the house down at the end of the day and we sell much of our electricity to the grid during off-peak. A PowerWall will allow us to cool the house with our solar collected at cheap times.
The main upshot is that it's hard to tell what the best approach is, given the many variables involved.
Altruistically, having energy storage will enable you to be a good citizen to the grid. Whether SCE rewards or punishes you and by how much is uncertain.

BrokerDon | 24 april 2017

@Earl and Nagin ...

Thanks for you thoughtful insights. The answers to my questions definitely don't seem simple. Hopefully Solar City / Tesla Powerwall will provide me answers to my questions today.

chris | 24 april 2017

The powerall is installed by SolarCity. Tesla confirmed today over the phone that they will NOT submit CA SGIP rebate paperwork until after the installation contract is signed; voiding the $500 deposit cancellation. If you do not get selected for the rebate, or given a lower rebate, you are still 100% on the hook for the battery and installation UNLESS you cancel and forfeit the $500.

stigmatacross | 1 mei 2017

I feel like the installer I reached out to for a Powerwall 2 installation is gouging me. For a single 13.5kw powerwall installed, they quoted $12,600. $5500 for the Powerwall, $700 for the gateway, $250 for permit, $150 for PG&E interconnect fee and approx $500 tax at my local rate. That means they've quoted $5500 for installation! At $100/hr, that's a 55hr installation. This is the same company I used to install my solar panels at a very reasonable rate. Would be interested in what others in California are getting quoted for a single Powerwall 2. Tesla estimates $800-$2000 for installation (not including tax and permit)

paulfisher13 | 1 mei 2017

I received a quote for 2 powerwalls (even though I only requested 1) for a total cost of $15,856. Even deducting the 2nd powerwall, it would only come down to $10,856 because they completed their assessment of my main panel and said it would need a replacement/upgrade which would cost $2700! If you don't need that main panel upgrade, then I assume the cost for 1 should be around $8100.
One thing I learned today from one of their sales reps is that they added an amendment to the purchase agreement that will allow you to cancel prior to the installation if you don't receive SGIP funds or if its not the amount you were expecting. They said the deposit would be fully refunded if that was the case, which I thought was pretty reasonable.
I'm waiting for my revised purchase agreement for 1 powerwall, then will sign to see if I can get the full SGIP rebate.

bobquast | 4 mei 2017

Everyone's long wait for Powerwall 2 is almost over! Actual installations by SolarCity finally started last Thu, April 27, in Cypress, TX, and a few locations in CA. I tried to post a link here with cool pictures of one of the CA installations that included the Gateway and new sub-panel for partial backup, but this forum isn't allowing me to save.

I'm in Iowa and am still waiting on our area's biggest/best electrician (Koehler Electric) to be certified by Tesla. I have a white Powerwall 2 on order (since Oct 31), plus I purchased a red Founders Series Powerwall 2 from someone in MI who earned it in the Referral Program (but lives in a townhouse where he can't install it). My SolarCity rep in Vegas said Tesla will ship my white one once there's a certified installer in the Quad Cities area where I live, and the red one will come when it comes (after Elon signs it and the other ones given as prizes). So keeping being patient; it's almost here!

Dcp9142 | 4 mei 2017

My quote was:
2 powerwall 11k
Gateway 700
Permit 150
Install 900
Panel upgrade 2700
Tax 848
Total 16298

So there is a fixed cost, if you don't need panel upgrade, extra wiring runs, pad pour, etc of $1750 plus tax. If you do need panel upgrade add $2700. It makes buying 2 units instead of one much more attractive, as you can spread out the fixed costs, especially if you are upgrading the panel.

venomous04 | 5 mei 2017

I got quoted exactly that 16298 figure. I signed the agreement to purchase since I am allowed and receive deposit back if I don't get full SGIP rebate amount, although SGIP has sent several emails that I'm reserved at step 1 which is the highest. At this point I'm ready for installation: site survey, engineering draft, and all documentation are all complete. Hopefully it happens sooner than later.

pinot.noir | 15 juni 2017

Any new updates from any of you who have scheduled to get your installations? Any insight as to why the SGIP rebates are an apparent crap shoot? As long as you qualify, why is it questionable as to if you will receive it?

hemantajay | 31 juli 2017

@venomous04 did your installation go well as planned? Did SGIP honor the step 1 rates? I'm on the fence about installing PW2 since PGE in Bay Area CA is price gouging with their SmartRate peak rates!

wg | 10 augustus 2017

For those who installed a power and solar at the same time, is it true that you can NOT charge the powerwall using grid power and that it can only be charged using excess solar energy?
I'm in the SF bay are with PGE

ggillies | 11 augustus 2017

WG. I am having my 2 Powerwall 2s installed next week and I had this exact discussion with my design team lead. She told me that the Powerwall WILL charge from PG&E (I am also a PG&E customer in Marin county); it is one of the settings that are controlled by the app. You can choose to NOT allow your Powerwall to charge from your utility company, or you can choose to allow it.

Bluesday Afternoon | 11 augustus 2017

I live in Orange County (Huntington Beach) and considering a Solar City 20 panel installation with 1 PowerWall 2. I met with the Tesla/Solar City rep the other day but holding back on beginning the process. I want as much info as I can get as this system is quite new. I've requested a chance to see a similar system installed and a chance to meet with the owner. I just made the request so I haven't heard back.

One question I have concerns TOU through SCE. Apparently, I MUST move to a TOU plan instead of the Tier system I currently fall under. I find it interesting that we have a 12 panel system in Irvine (installed by another company in January, 2016), and we are still under the Tier plan, not TOU. Is the PowerWall 2 difference forcing us into TOU?

Another question, I started looking into SGIP and wonder if the PowerWall 2 will qualify under the residential incentive? I read the residential incentive has a 10kW limit. As taken from the SGIP site, "13% of the energy storage reservation will be reserved for residential energy storage projects less than or equal to 10kW in size." Am I reading this correctly or does the larger PW2 fall in another category?

All comments are appreciated. Thanks

ggillies | 24 augustus 2017

So, I had my Powerwalls installed. VERY happy.

The install team were incredibly professional and also fastidious about their work. The install was done by Solar City, not "Tesla".

It took them around 5 hours from start to finish; they had to relocate my PG&E main panel into a brand new panel, and they also added two new panels for other functions.

Once they were finished, they left their work area cleaner than before they arrived. Stellar experience with that particular install team.

The app was functional next morning and easy to set up and navigate through. I can already see that there need to be a few more functions available to us users, but all in all, I am very pleased.

As far as I am aware, I will be getting the full SGIP rebate; the guy who runs the CA programs is in San Francisco and I found his direct phone number buried in some of the SGIP documentation. He was incredibly helpful and answered all my questions.


ggillies | 24 augustus 2017

P.S. I can see from my Powerwall app, that my Powerwall DOES use some PG&E to charge it when the solar panels output drops below around 3kW. The "Power Flow" animation clearly shows each direction of flow and I am getting from 0.1 to 0.2 FROM PG&E into the Powerwall 2. When the Solar panels are above 3kW, power goes to the house, the Powerwall, but NOT from PG&E, but rather TO PG&E.

The app also shows that during the day, my home is consuming 0.2kW (I assume that will be my "idle" baseline during the day"


ggillies | 24 augustus 2017

Ok.. I just saw the app change the flow at 2.0 kW from my solar array. At that level of output, the solar array is charging the Powerwall, powering the house AND pushing 0.2 kW back to PG&E.!

Bluesday Afternoon | 24 augustus 2017


Thanks for the information. My 7.8kW system is in the design stage with SolarCity. I looked at your pics and saw how professional the job looks. SGIP will go through SCE and hopefully my rebate will be over $9000 for the two PowerWall 2's. My rep said they would walk me through the entire application process.

Did you have any unexpected costs?

snovakov | 24 augustus 2017

Greetings to all. I thought that sharing my experience with an installation of two Powerwalls 2 might be of help.
First,the installation crew of two was amazing. They re-wired my main panel into a new one with no additional charge. They were done within a day and showed up the following day to make sure the system is registered with Tesla and operational.
On the other hand, everything that followed was quite disappointing. The app that is currently available to control the Powerwall is extremely basic. It allows you to choose between (only) two modes of operation: either as solely an emergency backup or what they call "Self-Powered". The first mode implies that the battery in the first mode is used only when the main power goes down. Fine. The second mode, however, is not programmable by the user. If you select it, the battery will charge itself from the solar panels; pay note, if your solar install is not big enough, you will get zero credit with the utility as all the power will flow to the battery. To make it worse, in the same mode the Powerwall will then discharge itself (power the house) when the sun goes dow. So, as it stands, if your solar system is not oversized, you will use the expensive credit from the utility and save a tiny bit during the inexpensive times. This is totally opposite of I planned to do which is known as rate-surfing.
The only answer that one gets from Tesla team is that an app that will allow the Powerwall to do what they advertise on their web-site (rate-surf) won't be available for many months.
My total cost for two units+install was $13,715.25.

ggillies | 24 augustus 2017

@Simply Red.

No additional costs beyond their quoted price. I paid $13,500 total for my installation, or at least, that's what my PayPal bill from them was.

philgrocks | 22 december 2017

Does the power wall make any noise? This might influence location.