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Charging during the day with solar or wait until after 9pm?
- Thread starter xrdv8
- Start date Nov 29, 2024
- Watchers 4
xrdv8
Member
First Name Maury Joined Nov 5, 2024 Threads 3 Messages 9 Reaction score 0 Location Los Gatos, Ca. Vehicles 2023 R1T
- Thread starter
- #1
Hi there, when I bought my R1T i was told to wait until after 9pm to charge it as the rates are lower. Made sense until I thought that that I have solar and produce more during the day and less at night. Here in California PG&E takes your excess into the grid at a much lower rate than they charge you. So has anyone done the math to see if you are actually better off charging during the day with your excess solar or waiting until after 9pm for off peak rates?
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Polar
Well-Known Member
Nov 29, 2024
You are the only one who knows your power rates and TOU times/rates and solar buy back rate.
You gotta do this math yourself. Too many variables.
Personally - no TOU and my Solar Net Metering is 1:1 so I charge whenever. My math was super easy.
You gotta do this math yourself. Too many variables.
Personally - no TOU and my Solar Net Metering is 1:1 so I charge whenever. My math was super easy.
iansriv
Well-Known Member
Nov 29, 2024
- #3
Sounds quite simple to me. What is the >9pm rate vs. buy back rate? If the BB rate is cheaper then you just use the excess solar to charge. All the best.
fireroasted
Active Member
First Name Mike Joined Jan 27, 2024 Threads 4 Messages 28 Reaction score 14 Location RMV, CA 92694 Vehicles R1S Occupation IT
Like above it totally depends on what you pay when. providers, I have SDGE, all have a different set of plans. Mine worked best to change to an EV plan, where everything was way way cheaper in the evening, and expensive during the day, but I had only some solar. Enough to run the house during the day mostly. Then at night super cheap to charge the EVs. 12 cents kWh I believe.
Now my situation has changed, I still have the same plan, but I have a 96kW house battery, and no visible roof left that isn't panel'd, so now during the day make more sense. Our habits haven't changed, and I am trying to get to what @Polar mentioned about, where when just doens't matter for my wife. Who isn't big on rules and details about this stuff.
FInd out what all plans are available to you, and then find out how much you are drawing from the grid the last few months. You'll need that info to make a decision on plans.
Now my situation has changed, I still have the same plan, but I have a 96kW house battery, and no visible roof left that isn't panel'd, so now during the day make more sense. Our habits haven't changed, and I am trying to get to what @Polar mentioned about, where when just doens't matter for my wife. Who isn't big on rules and details about this stuff.
FInd out what all plans are available to you, and then find out how much you are drawing from the grid the last few months. You'll need that info to make a decision on plans.
Kylechoffman
Well-Known Member
Joined Mar 22, 2022 Threads 3 Messages 87 Reaction score 55 Location San Diego, CA Vehicles '25 R1S Dual Max, '24 Model Y LR w/ Boost, '18 Model 3 LR, '06 XC90 Occupation Salesforce
- #5
I am also on the SDGE EV plan. I charge everything overnight due to 12 cents after midnight vs 40 cents during the day. Simple example of charging 75 KWH overnight would cost vs during the day . As others mentioned, run your numbers and see what pencils out.
2025 R1S Dual Max with 22's (Preorder 11/27/18 #1596)
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SANZC02
Well-Known Member
Hi there, when I bought my R1T i was told to wait until after 9pm to charge it as the rates are lower. Made sense until I thought that that I have solar and produce more during the day and less at night. Here in California PG&E takes your excess into the grid at a much lower rate than they charge you. So has anyone done the math to see if you are actually better off charging during the day with your excess solar or waiting until after 9pm for off peak rates?
SCE is actually 4 cents cheaper between 8am and 4 pm than the 9pm to 8am rate for winter rates, summer rates are the same in those time frames.
Preorder June 2020,
R1S LE, ElCap, BM, 22 Bright, Launch Green, BM, Dark 22s (1/19/2023)
Delivery Window -June/July. (New window as of 6/11/22) October/December
(New window as of 10/28/22) February/March 23
Config updated/locked - yes (1/19/23)/yes(12/28/2022)
guide contact - yes (12/28/2022) VIN NN00081x NN0016XX (1/20/23)
R1S LE, ElCap, BM, 22 Bright, Launch Green, BM, Dark 22s (1/19/2023)
Delivery Window -June/July. (New window as of 6/11/22) October/December
(New window as of 10/28/22) February/March 23
Config updated/locked - yes (1/19/23)/yes(12/28/2022)
guide contact - yes (12/28/2022) VIN NN00081x NN0016XX (1/20/23)
bigsky
Well-Known Member
First Name RNS Joined Jan 8, 2024 Threads 8 Messages 681 Reaction score 432 Location NW Vehicles 2024 R1S Quad, 2020 Tesla MS Perf., 2022 Tesla MY Perf., 2004 4Runner 4x4 Lim.V8 Occupation RNS
Nov 30, 2024
Hi there, when I bought my R1T i was told to wait until after 9pm to charge it as the rates are lower. Made sense until I thought that that I have solar and produce more during the day and less at night. Here in California PG&E takes your excess into the grid at a much lower rate than they charge you. So has anyone done the math to see if you are actually better off charging during the day with your excess solar or waiting until after 9pm for off peak rates?
I had so learned to take advantage of my solar array that I knew the total output at any time. It was less than the 11.5 kWh my Tesla charger put out, so I derated the charging on my Teslas to match exactly the output of my solar array. This way, I hardly ever took one single electron from the grid. And the price was right. Gratis!
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