I bet the wine was better also!We were over 150 almost every day until today. We went to Healdsburg last week and the air was better there than here
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I bet the wine was better also!We were over 150 almost every day until today. We went to Healdsburg last week and the air was better there than here
I bet the wine was better also!
PG&E sent me paper mailers, emails, and called me to advise me how I could do better. They told me I was in the worst 1% of energy use.
You could go to PVwatts, plug in your address, and it will tell you what an 8.16 system on your roof would produce.
But let's just say its 12,000 kwh a year.
Let's further say you use, on average, 1,000 kwh a month.
OK, so then, you figure out what your utility is doing, because a system sized exactly for what the house will use depends on a 1 to 1 net metering to make the math simple. That means if when the system is producing more than you use (in the day) you get credit at the same rate as when you are buying power at night.
If the rate is not the same, lets say your utility will do a time of use rate schedule. That might be, who knows, half of your usage? So for 6000kwh per year it might still "cost" the differential, or say $300 bucks a year if the differential is 5 cents. Six hundred a year if its 10 cents.
Not a disaster, the panels still save money, and $300 bucks will not, per year, cover the cost of a powerwall, so there is a possible answer.
By the way, a Model 3 has a 75 kwh battery, so if you charge it 50 times a year that's 3,750kwh you have to account for.
SCE TOU differences for summer rates below (its not a 5 cent difference under any plan).
Purchasing solar will FORCE a TOU rate, if not already one one... one of these below. TOU prime is the "EV" rate.
The short answer to the OP is, with an 8.X sized solar, you likely want 2 powerwalls, not one, if the goal is to not use energy during "peak" time. OP may not even be on a TOU rate now, because many people are still on domestic, which is the old tiered rates where "the more you use, the more it costs" but WHEN you use it doesnt really matter.
In my case, I am holding onto my domestic rate because under NEM 1.0 I do get compensated 1:1 for solar, AND the rate I get compensated for solar at is the "tier 1" energy rate, regardless of when I use it, but with my powerwalls I can use very little power from the grid if I dont use AC.
View attachment 583740 View attachment 583741 View attachment 583742
PG&E is worse. On my plan and in the summer:
Peak = $.54/kWh
Shoulder = $.30/kWh
Off = $.15/kWh
However, Powerwalls are not the only way to solve TOU. Overproduction can also solve it. It is cheaper to build a larger system (if one has the space) than to buy Powerwalls.
As I stated in the other thread, you don't want to over produce for the year. I suspect you aren't, but over production on a specific day doesn't necessarily mean over production on an annual basis. Like my system, you are probably "banking" these over production credits in the summer, but charge against them in the winter
Actually, I want to overproduce as I'm on NEM 2.0. What I don't want is a net credit at the end of the year. The overproduction helps ensure I offset the TOU and end up with as close to a $0 bill as possible.
I came across this chart on the internet and not sure how accurate it is, but Tesla Advisor said the medium size system should give me anywhere from 31-44 kWh, not 20-30 kWh. He said this chart was for a region that had less sun light exposure. Can someone please share if their system is more align with this chart or Tesla advisor?
However, Powerwalls are not the only way to solve TOU. Overproduction can also solve it. It is cheaper to build a larger system (if one has the space) than to buy Powerwalls.
PG&E requires extra paperwork to complete if you create a PV system that is oversized based on your historical use. There are people on this forum that have been denied for oversizing their systems too.
...
PPS: PG&E sucks.
This is my total electricity usage, yesterday... hourly. You can see that, yesterday, I had zero usage for the entire day from SCE. Powerwalls ran my home from midnight to sun up, solar ran home and charged powerwalls during the day, then powerwall took over and ran the home the rest of the day.
The reason that the negative kWhs dont show up till after 12 noon, is because the solar was running my home and also filling my powerwalls. Powerwalls got full, then feed to SCE started.
I use self powered, because I am not on a TOU plan, but, @holeydonut maybe something to look forward to.
View attachment 583790
Do you even need to be grid connected? Or could you tell SCE to disconnect you?