Southpasfan
Member
Nice. Would be even better if you could move those 2 vents to get a perfect 5x7 south facing grid.
Those vents are already gone. I sent Tesla an email to that effect.
You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
Nice. Would be even better if you could move those 2 vents to get a perfect 5x7 south facing grid.
Those vents are already gone. I sent Tesla an email to that effect.
OK let’s say that you have 100 kW battery in a Model S.I’ve thought about this for a while. In the case of a power outage I’ll be able to charge my cars at a much better rate than 5mph. I’ll have enough solar to fill the power walls and my cars during the day and can last through the night with the reserve should the outage occur at night. Am I missing something?
OK let’s say that you have 100 kW battery in a Model S.
That’s around 7+ powerwalls worth of storage. If I have a power failure I want to keep our house running as long as possible theoretically to outlast the power failure. Now, if we had bidirectional charging and we could just suck it out of the Tesla’s - that would be awesome in an extended power failure. Although I’ve never experienced a power failure that even comes close to 24 hours in my entire lifetime and I am in my early 60s.
And it is really easy just to run our Tesla’s over to a supercharger and charge them back up. Not so easy to take your house over supercharger.
I keep my power wall at 80% in case of a failure. It only charges from the sun.
I just don’t see the point of charging from the power walls - it’s just moving it from one battery to another that can’t be moved back.
This is all from my personal situation where we have net meter pricing. So basically storing it to the grid has no more cost than throwing it back on to the powerwall. Therefore any potential overproduction benefits become irrelevant.
Everybody has a different situation, although I have yet to experience a power failure at all since I installed my powerwall.apparently I have two logins depending on the device I use. This is chispa
I may have misunderstood the solar plus powerwall off grid? If the power goes out at night I realize I can only get power from the powerwall. When I’m producing power via solar will the non powerwall circuits work? If they do I will not have my car on backup. If not I’ll include it as I understand that I have an option to default to not charge my 3.
I had no intent to move power from the Powerwalls to my car. I simply want to charge my car while producing power at a higher rate than a wall plug. The idea is if power is out for an extended period I expect the super chargers will be busy.
I may have misunderstood the solar plus powerwall off grid? If the power goes out at night I realize I can only get power from the powerwall. When I’m producing power via solar will the non powerwall circuits work? If they do I will not have my car on backup. If not I’ll include it as I understand that I have an option to default to not charge my 3.
I had no intent to move power from the Powerwalls to my car. I simply want to charge my car while producing power at a higher rate than a wall plug. The idea is if power is out for an extended period I expect the super chargers will be busy.
When the power is out only your backed up circuits will work. They will get power from the powerwall, from solar, or a combination of the two, depending on how much solar is being produced at any given time.
The non backed up circuits will not have power at all during an outage.
The other concern about supercharges is that depending on how close you are to the supercharger and how widespread the outage is it’s quite possible that the supercharger will not have power either.
At night...thank you for clarifying. Looks like I’ll be including the hpwc with the backup, but won’t use it during an outage.
Waiting on the permit for my small system. Moved two roof vents to make the rectangle layout work and to fit the newer large panels.
North is up in the diagram, it's a west facing array.
View attachment 560325
I’ve thought about this for a while. In the case of a power outage I’ll be able to charge my cars at a much better rate than 5mph. I’ll have enough solar to fill the power walls and my cars during the day and can last through the night with the reserve should the outage occur at night. Am I missing something?
Herewith, my fate. I'm not going to move the two bathroom exhaust fan vents and the one toilet vent that knock that hole in the southeast layout.
Sure, it's a hole. But it's a hole that is not street-visible, not neighbor-visible, and on a side of the house I only visit once a month at most. It's the space between our house and our neighbor. Our outdoor space is to the southwest.
We have no shade hitting the roof and won't for years even if the Queen palms next door thrive. The production estimate for this layout is 24MWh. June bill was 2300 kWh, same as May, mainly 2 AC systems and a pool pump. Gas cooktop, grill, pool heater, water heater, and clothes dryer with no intent to change any of these any time soon. No EVs at the moment, but possible in 2022-23.
Our layout does not meet 100% of our estimated needs. We're Duke Energy, tiered 1:1 net metering. I'm thinking about adding panels to that south-facing section to the west of the pie wedge, but it's at a steeper pitch than the rest of the install. No PW in this build, I'm going to let Duke be my battery since we're not on TOU.
Duke sells at ~12 cents for the first 1,000 kWh then ~13 cents to infinity and annual reconciliation is 2.5 cents so I don't want to oversize. We moved here in April so we don't have actual annual usage.
Thoughts on adding panels?
View attachment 560405
For those who have ordered since the 340 watt panel announcement, how are your orders progressing?
I ordered on June 21, ran into an issue with how their system was auto-filling my utility interconnect agreement on June 26, and I've been waiting for a fix ever since. They're very apologetic every time I call, but it sounds like they're slammed with orders right now.
Has anyone been lucky enough to schedule an install date, yet?
For those who have ordered since the 340 watt panel announcement, how are your orders progressing?
I ordered on June 21, ran into an issue with how their system was auto-filling my utility interconnect agreement on June 26, and I've been waiting for a fix ever since. They're very apologetic every time I call, but it sounds like they're slammed with orders right now.
Has anyone been lucky enough to schedule an install date, yet?
I ordered a week before the change, was moved to the new panel and pricing the Friday they released it(at my request), building permit was approved on 6/29, and now waiting on them to submit my interconnect to HECO(Oahu-Hawaii). Once HECO approves then I can get an install date.
Wow, I'm envious of the pace of your install. Tesla is waiting to fix my interconnect form, and after that I've been told it will probably take a full 4 weeks for permits due to the COVID-19 backlog.