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A lot of good suggestions. I will be adding signage to the box indicating Powerwall batteries inside. I will upgrade the wifi thermometer to one that will send out alerts when the temperature exceeds set thresholds. I will look into adding in some bimetallic passive vents. Thanks to all for the...

Thanks for your thoughts. Just as the insulation keeps the cold out, it should keep the heat out during the summer. If not I could latch the doors open or just remove them altogether during the warmer times. The aluminum plate comes preattached to the heater, not sure if I can safely remove it...

It has been over a month now since I first reported my issue with the Powerwall batteries not preheating during cold weather if the grid power is off. As alexguichet mentioned, version 1.46.0 may have fixed this issue. It was released after my experience. To date, I have not been able to check...

In my experience there are a couple of conditions that Tesla will shut down solar even if the batteries should be charging. The first that seems more likely is that the solar produces more charge than the batteries can take. In my case my two batteries can receive about a maximum of 6.7 kw...

No, there is no place to put my batteries inside. I would have done that in the first place if I had. The heaters have an attached thermostat set to come on at 40°F and off at 55°F, so there should be no issue in overheating the batteries. According to the powerwall information, the optimum...

I just found out from Tesla support that the built in thermal warming for the batteries in cold weather is only functional if there is grid power. This is an issue in my area where I live in the mountains and subject to cold in the winters. My batteries are mounted on the outside wall of my...

I have 2 Powerwalls setup for whole house backup. I don't know the temperature of the Powerwalls at the time. The overnight temperatures dropped down into the 20s and only got up to about 50 during the day. However, it seemed the batteries warmed up slower than the outside temperatures. In...

I had this problem a couple of weeks ago and called support. They told me when it is cold out and grid power is down, in my case under 40, that the batteries cannot accept a high charge. At the time my batteries were. At the time my batteries were at 70% and correctly discharging. However Tesla...

The whole house surge protector I installed was an Eaton CHSPT2Ultra as seen here on Amazon. https://www.amazon.com/CHSPT2ULTRA-Ultimate-Protection-Length-Height/dp/B01AQAKRSS/ref=sr_1_3?keywords=whole+house+surge+protection&qid=1572307273&sr=8-3 It does not protect your house from bad power...

My combined solar + Powerwall system is enough to allow me to run in self-powered mode almost all the time. This has the same effect as power filtering as you are not using grid power. This assumes that you size your system to meet 100% of your needs. Like AuPanda, I also have a whole house...

When I was having Tesla install my 2 Powerwalls, one of the documents they sent me to sign was to switch me from an annual billing plan to a monthly one. This meant that in the winter time when my usage was greater than my solar production, I would have to pay. When I called up to complain about...

Powerwalls not power washing LL

I had the same issue with my power washing LL is, but I don't think putting out 65Hz is a powerwall issue. My old UPS units would only handle to 63Hz. I switched to Eaton UPS units that handle up to 70Hz and my UPS issues went away.

My Powerwalls were install in December 2017. Tesla activated them during install, but it was 9 1/2 months (August 2018) later before I got official PTO from SCE!

I don't think you should have any worries especially if you are looking to only power some of your house. I power my entire house and have enough solar during the day to run my house and recharge the Powerwalls and then run off the Powerwalls in the evening. IN my area we have had a number of...

Merrill, your PV system is about the same size as mine and I have 2 Powerwalls doing a whole house backup. I run all the time in self-powered mode and only sometimes in December and January do I need to pull off the grid. Right now, I am getting no lower than 30% on my Powerwalls and by 2pm on a...

Merrill, you should have no trouble mounting them outside. I am in the San Bernardino mountains and my Powerwalls are mounted outside on the back of my house. Temperature in the winter can get down to the teens and in the summer the high 90s. I have had the Powerwalls for a year and a half...

One thought would be to contact the SGIP administrator for your power company. Mine is SCE. I contacted them when I first found out about the Powerwall 2 and they provided information about the revamp of the SHIP program back in 2017. With the passage of the $800 million additional dollars there...

I am in the southern California San Bernardino mountains and on SCE. My install went smoothly over 2 days. First day 4 guys showed up and on the second three guys. They were from Solar City and were very knowledgeable, competent and on time both days. My only complaint would be from reservation...

At the time I had my solar installed 11 years ago, the power company would only allow a certain amount over your current usage. However, it was a second home at the time and with a written letter to the power company explaining that, I was allowed to install as large of a system as I could fit...

I can finally add my PW2 install to the completion list. 10/16 Reserved twp PW2 12/17 Had the two PW2 installed 08/18 Received PTO (Fortunately Tesla turned it on during the install) 01/19 Received Step 1 rebate Very Happy :-)

This happened to myself and others as well. I've disabled this feature to preserve the ITC until an answer can be given. Since I run in self-powered mode and the stormwatch occurred after sundown, my solar production was already done, so my batteries charged during the night from the grid.

In my interconnection agreement in Section 3 which read s as follows. 3. METERING AND BILLING: 3.1 Metering requirements and billing procedures shall be set forth in SCE’s, Electric Service Provider’s and/or Community Choice Aggregator’s/Community Aggregator’s rate schedule(s) applicable to...

I have to update my own post. I just found out that SCE warns that it may shut power down tonight and/or tomorrow due to high winds in the area. No storm though.

Ny Tesla app just indicated that a storm was forecast in my area and switched to backup mode only. The only problem is, is that there is no storm on the horizon., We had some rain yesterday,, but that is long gone. I thought stormwatch was a good idea, but after this there appears to still be...

Just noticed I am am 1.25.0 and see that under settings there is now a 'Notifications' which will notify you when there is a power outage. It is set on by default. This is a feature I've wanted as that when the power goes out I don't know about it because it is a seamless transition for me.

That is very interesting. I'll have to check this out with my current UPS (CyberPower 100VA) at a planned power outage coming next month. If it proves true, I'll change power supplies. I have found an even more robust one than the Minuteman. It is made by Eaton. A comparable model to the...

Yes, in my case a single panel as you described. However, Tesla, after the meter, ran the directly to the switch and then back to the main panel 200A breaker. This way they did not need a second panel. Not sure how to describe exactly what they did. Tomorrow, I can get a picture and annotate it...

This is my setup. There appears to be two different way Tesla does installs. In my case, they took the incoming service through my 200A panel directly to their 200A switch and then ran power back to the breakers in my main panel. In other installation they installed a second 200A panel, i.e Main...

Yesterday, finally received my revised ICF, signed and sent it back in. Today, I received and signed another form called "Self-generation incentive program final project cost affidavit". It consisted of the following. By signing this affidavit (“Affidavit”), _______________________ (“Host...

True, but this is a cost that Tesla fronts for you, so only fair they get it back.

First big test of my installation came today with a planned SCE outage lasting 8 hours and 41 minutes from about 9am to 5:30pm. Everything worked as expected and hoped for. I noticed nothing when the grid power was shut off and ran on a combination of solar and/or battery as they day went on. A...

Tesla charged me just $900 for the complete installation of two powerwalls. I thought this was extremely reasonable as they had 4 techs out day 1 and 3 techs out on day 2. They did a great clean job with the installation. Also, remember that Tesla is covering the cost of the SGIP application fee...

I'll add a couple of things to what Arnold said. 1. The Powerwalls were new to many localities and they had to figure out/develop procedures for the permitting process. I was second in line and my permit application was held up until the first persons application was figured out and processed...

Both my batteries are exactly 30" from EMT centerline to bottom of the batteries. Both batteries are wall mounted.

I have a 6.2 kw system and had 2 PWs installed last month. My experience to date is that I run through at least 25% of my batteries (50% if I were to have just one) at night alone just running a few lights, computer and TV for a few hours. I am on whole house backup, but do not plan to run...

I would say this is partially correct. It is my understanding that Tesla will only back up certain circuits if a single powerwall is installed, but if two or more powerwalls are installed then you can use them as a whole house backup. I had two powerwalls installed and I am set up as a whole...

Don't forget all the phantom vampire devices that draw little but cumulative power, i.e. TV, amazon devices on standby, modem, wifi router, clocks (standalone, in microwaves, DVRs, stoves, etc.), chargers, refrigerator (even when compressor not running and more. I also have additional CT on a...

When I originally put solar on my roof, I was told that I could only size a system that would cover my average monthly bill + 10% overage. This was controlled by the utilities. I managed to get around that limitation at the time because I was a part-timer in the mountains at the time. This was...

I'm not sure, but my guess it is the final inspection for the permit signoff. Since I have not signed my ICF yet, I can't think of anything else. Hopefully, I get my revised ICF today and will sign immediately and send back in

I received my ICF on 1/9 but they had my mailing address wrong. I am waiting for the updated ICF. However, yesterday I received a phone call from Tesla to schedule my onsite inspection for this coming Tuesday. My PWs have been installed for just over three weeks. As soon as I get the updated...

A short while ago, Tesla sent me a net metering agreement from SCE. I have an existing one for my solar, but it needed to be updated for the addition of the PW2 batteries. One of the sections (3.2) Monthly Billing Election had me concerned. It was requesting I initilal the section that I wanted...

Yes, I have whole house backup. My crew seemed extremely capable and extremely pleased with their work. The first day there were four of them and the second day they finished up with three. I was originally told that there would be a second panel box where they would relocate all the breakers...

And I wish I could afford a Tesla car ;)

Here are my batteries mounted to the wall of my house

Arnold, Your switch setup seems different than mine unless it is not yet complete. Here is my complete setup My switch has a 200A breaker in it Inside it looks like this In my install the mains were run directly to the switch and then back to the main panel to the house breakers...

Tesla is finally here doing the install. According to the crew I am only the second installation in the San Bernardino mountains, the first being a customer in Lake Arrowhead who had three batteries installed. I will post pictures and details of my installation later.

Good information. A couple of other specs on the batteries for comparison Cost Dimensions Weight Cost after Incentive Sonnen Eco 10 $6,200 75 x 26 x 14 in 622 lbs $2,200 LG...

Received the email from Tesla below Very excited about tomorrow!