integlikewhoa
New member
- Joined
- Nov 23, 2020
- Messages
- 13
Hello,
I'm in California USA.I have installed my own 40 panel,14.8kW Enphase Micro Inverter system in the last year which is permitted and backfeeds excess solar to the grid. I then buy back at night and when my loads exceed my production. I pay high rates during peak hours of the day up to 8pm andI have now decided to DIY a battery to help mostly peak shave. Power hardly ever goes out in my area (been few years and even then it was out for a few hours). I wouldn't mind and will probley plan to have some off grid manual transfer at some point but for now I would like to get some GTIL's maybe 4-8kW worth to cover my AC/hot water heaterand otherloads during the after noon hours. I ordered(2,900)20kWH of 18650s to get started on a 14s200p setup. Batrium management also in the works.
So my question or problem is charging the batteries. I want to charge them from excess solar which usually in the early hours of the day (I'm at work not charging the EV cars yet). But I don't want to pull from the grid I want to try and increase and decrease charginging amps based on excess solar production. I do something similar now with charging the EV's. The charger output to the vehicle checks with Enphase controller every min on how much is being pushed back to the grid and raises lowers or starts and stops charging.
Does anything like this exist? I was looking in to something like the Eltek Flatpack2 controlled via can by the batrium but that doesn't seem to offer what I need. Also don't like the Flatpack is not dual Phase USA current but maybe two will fix that.
I'm also trying to install all this in the garage (or behind it)on a 100amp subpanel well away from the Main panel.
Whats my options?
Thanks,
I'm in California USA.I have installed my own 40 panel,14.8kW Enphase Micro Inverter system in the last year which is permitted and backfeeds excess solar to the grid. I then buy back at night and when my loads exceed my production. I pay high rates during peak hours of the day up to 8pm andI have now decided to DIY a battery to help mostly peak shave. Power hardly ever goes out in my area (been few years and even then it was out for a few hours). I wouldn't mind and will probley plan to have some off grid manual transfer at some point but for now I would like to get some GTIL's maybe 4-8kW worth to cover my AC/hot water heaterand otherloads during the after noon hours. I ordered(2,900)20kWH of 18650s to get started on a 14s200p setup. Batrium management also in the works.
So my question or problem is charging the batteries. I want to charge them from excess solar which usually in the early hours of the day (I'm at work not charging the EV cars yet). But I don't want to pull from the grid I want to try and increase and decrease charginging amps based on excess solar production. I do something similar now with charging the EV's. The charger output to the vehicle checks with Enphase controller every min on how much is being pushed back to the grid and raises lowers or starts and stops charging.
Does anything like this exist? I was looking in to something like the Eltek Flatpack2 controlled via can by the batrium but that doesn't seem to offer what I need. Also don't like the Flatpack is not dual Phase USA current but maybe two will fix that.
I'm also trying to install all this in the garage (or behind it)on a 100amp subpanel well away from the Main panel.
Whats my options?
Thanks,