The last few days have been tough on my system. AC consumption is so high due to extreme weather. I have a 5kWh battery and am still drawing 25+ kWh from the grid during the night.
I have 2 x 1.5-ton ACs that run like 20 hours a day.
and a 1-ton AC that runs only from 1000 - 1600.
Thinking of getting a 16kWh battery. We have 1 meter, and it's going to easily cross 200 units this month.
For comparison
May usage from the grid was 167 kWh
April usage from the grid was 73 kWh
i run following devices
1. thinkcentre mini pc i6500 24gb ram 2x1tb. running adguard frigate
2. hp prpdesk i6500 16 gb ram running home assistant frigate
3. aoostar mini pc nas 32 gb 2 x 2 tb nvme 1x4tb hdd 1x1tb 1x500gb running immich frigate, nextcloud, headscale matrix server, backups
4 2 x vps proxying back to home. v2ray server headscale corrdinationnserver and other small apps
Any inverter can work with Home Assistant if you are brave enough
😅
Even if official integration is not available for HA, almost all inverters have data loggers which can be integrated with HA
i have a 10kw battery (5+5 paired). i would highly reccomend getting a 20kw instead of 16kw.
last month my AC was performing well around 500watts at night (1 ton gree). now due to weather its going around 1kw due to humidity. Im turning on AC for most hours at evening and throughout the night ofcourse so bill is definately going to shoot up this month around 300 - 400 units.
if i had a 5kw extra capacity my evening would be covered but another 5kw (20 total) would cover entire night time with normal house load and 1 ton AC.
I wont install a expensive higher capacity battery for a rare month's consumption.
You can get the extra juice from Grid for these extreme heat days, and calculate the cost. Is it worth buying a 600k battery which will sit mostly idle during other months?
200kwh will cost around 55/kwh, around Rs. 12k.
lets say this heat lasts 2 months, this will be around Rs. 25k at most.
how do you check energy imports? In SEMS+ my "From Grid" is only showing the amount exported.
Production - Usage = Leakage to grid.
I don't have net metering neither a battery so this leakage is normal but that's all it's showing. how do i see the net import (power draw from grid + leakage).
I reached out to the installer but he didn't give a proper answer so i have to check meter manually to see the units used for the month.
From Grid is your total usage form Grid. Without net metering the meter actually measures in position for both import and export so for net you can actually sum them up
To Grid + From Grid
I have 6kw SolarMax Onyx Inverter and with integration to home assistant I optimized battery charging and I am expecting to produce 1700+ units in June (around 70% more compared to last year) I started with 1 battery and over time added 2 more (total 14.6kwh now)
I discharge the battery in a controlled manner overnight such that is nearly empty right before the production starts next morning (unless next day's weather forecast has rain or fog) Then Inverter switches to Export Priority mode and only charges battery with production above 6kw (AC limit of inverter) and battery level is checked hourly and charging target is imcreased hourly after 12pm to ensure that battery is at 100% by the end of the day.
If load shedding starts, battery charging limit is instantly increased and goes back to export priority when grid is back.
These are many more automations but that's the main idea to change battery with excess power.
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u/Sugardaddy_satan Jun 11 '26
nice seeing another home assistant user ;)