Thought it might be helpful to those considering installing a system or increasing theirs to see how people are fairing in these 100F temps right now with their PV + ESS systems.
Here’s our info, Tesla install, PTO end of September 2019, first summer of use in southern SF Calif. bay area, PG&E/SVCE EV2-A:
24-340s (8.16kW) Q-Cell solar panels, originally were going to get 2 PWs but before scheduling added a 3rd. Glad we did. 3800 sq ft, 2-story house with old 10SEER Carrier 5-ton split A/C (draws around 6kW, Tesla installed a soft start on it). Major loads are A/C, Double oven, and charging our two cars periodically. Panels are split almost evenly between SE and SW roof sections.
Here’s how today’s graph/usage looks at around 9pm. Started morning replenishing our PWs from night before—at 10:24am we were at 80%. Our thermostat is set at 76F, comfortable, and today’s high was about 102F. It’s in the upper 80s now and projected to drop tonight to the mid-60s by 6am. Basically your seeing A/C use registering the spikes with dinner time spike adding microwave usage. We have our 3 PW reserve set to I think around 30% so expect to be running A/C off of the grid sometime overnight but at non-peak hours.
Please add your own info. While we didn’t add much to the grid during the peak hours, we stayed comfortable and weren’t adding to the draw on the grid today, hopefully keeping power on to others relying on grid power.
Here’s our info, Tesla install, PTO end of September 2019, first summer of use in southern SF Calif. bay area, PG&E/SVCE EV2-A:
24-340s (8.16kW) Q-Cell solar panels, originally were going to get 2 PWs but before scheduling added a 3rd. Glad we did. 3800 sq ft, 2-story house with old 10SEER Carrier 5-ton split A/C (draws around 6kW, Tesla installed a soft start on it). Major loads are A/C, Double oven, and charging our two cars periodically. Panels are split almost evenly between SE and SW roof sections.
Here’s how today’s graph/usage looks at around 9pm. Started morning replenishing our PWs from night before—at 10:24am we were at 80%. Our thermostat is set at 76F, comfortable, and today’s high was about 102F. It’s in the upper 80s now and projected to drop tonight to the mid-60s by 6am. Basically your seeing A/C use registering the spikes with dinner time spike adding microwave usage. We have our 3 PW reserve set to I think around 30% so expect to be running A/C off of the grid sometime overnight but at non-peak hours.
Please add your own info. While we didn’t add much to the grid during the peak hours, we stayed comfortable and weren’t adding to the draw on the grid today, hopefully keeping power on to others relying on grid power.
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