Hi, I'm new to the forum so please go easy.
I've spent a few months going through various YouTube channels, from Will, to Andy (Off Grid Garage) and more recently the Digital Mermaid. All excellent channels and have given me lots of information.
What I find difficult is that there isn't a lot of UK based channels, I know we don't get a lot of sun, but recently wholesale energy prices have rocketed causing a lot of energy providers to fold so there is potentially more interest in what I'm trying to do which is, build an initial grid tied system with a DIY 15kwh battery using some of the EVE 3.2v 280Ah cells in a 16S1P configuration, with the potential to expand the system out to 30kwh (16S2P) in the future.
Solar is not really an option for me as we have a funky roof configuration which doesn't give me a great deal of roof real estate to mount panels, so my only option is to use Off Peak Charging using my current supplier (Octopus Energy) my tariff gives me 4hrs of low cost power between 00:30 and 04:30.
I therefore need a charger which can initially charge at 3.75kw (15kwh / 4hrs) but when I upgrade to the 30kwh battery it will need to charge at 7.5kw (30kwh / 4hrs). I know these figures arn't exact as I'll probably only be doing an 80% DoD, but you get the idea. The selection of BMS will also need to cater for the charge/discharge figures.
What I'm looking for is a Grid Tied inverter/charger (if possible, without any PV) which can handle these charge figures which is available in the UK. I've searched around a lot and not found anything other than the expensive Victron Quattros which get anywhere near. My max AC load would be around 5kw peak, with average usage of around 1 to 1.5kw throughout the day. (I'm a heavy user ). Happy to take any advice or pick apart my solution. I'm also looking for other people in the UK who are either interested, or have already done something similar.
Cheers.
I've spent a few months going through various YouTube channels, from Will, to Andy (Off Grid Garage) and more recently the Digital Mermaid. All excellent channels and have given me lots of information.
What I find difficult is that there isn't a lot of UK based channels, I know we don't get a lot of sun, but recently wholesale energy prices have rocketed causing a lot of energy providers to fold so there is potentially more interest in what I'm trying to do which is, build an initial grid tied system with a DIY 15kwh battery using some of the EVE 3.2v 280Ah cells in a 16S1P configuration, with the potential to expand the system out to 30kwh (16S2P) in the future.
Solar is not really an option for me as we have a funky roof configuration which doesn't give me a great deal of roof real estate to mount panels, so my only option is to use Off Peak Charging using my current supplier (Octopus Energy) my tariff gives me 4hrs of low cost power between 00:30 and 04:30.
I therefore need a charger which can initially charge at 3.75kw (15kwh / 4hrs) but when I upgrade to the 30kwh battery it will need to charge at 7.5kw (30kwh / 4hrs). I know these figures arn't exact as I'll probably only be doing an 80% DoD, but you get the idea. The selection of BMS will also need to cater for the charge/discharge figures.
What I'm looking for is a Grid Tied inverter/charger (if possible, without any PV) which can handle these charge figures which is available in the UK. I've searched around a lot and not found anything other than the expensive Victron Quattros which get anywhere near. My max AC load would be around 5kw peak, with average usage of around 1 to 1.5kw throughout the day. (I'm a heavy user ). Happy to take any advice or pick apart my solution. I'm also looking for other people in the UK who are either interested, or have already done something similar.
Cheers.