I built a modest 24v off grid system about 12 years ago, with 1.2kW of panels (3s2p), Flooded lead acid batteries and Exceltech inverter. Worked ok for a while, but battery bank gave up the ghost a year or so ago.
I decided I'm going to change up to 48v Lithium system, and ordered 2 GYLL 48v batteries from Signature Solar the other day.
Now I've got to make a final decision on inverter. I'm liking the all in ones out there on the market and the idea I don't need to piece all the components together like I had to in the past. Want to also have ability to use a portable generator to charge the system should grid power fail and inclement weather reduces solar input.
Looking seriously at a Sol-Ark 5k or a GroWatt 6000T DVM.
My main focus is to supply power to critical loads (2 freezers, fridge, internet) and possibly to offset current grid consumption if solar panels are producing excess energy.
Pluses of the Sol-Ark are that it seems very flexible in what it can do and with high efficiency. User interface seems nice. Lots of good reviews on these units. From what I gather this is a high frequency transformerless inverter. Could this have surge issues with the number of fridge/freezers that I have? Minus - I would have to purchase new solar panels to meet the minimum V for operation (150V). Also the inverter is a little spendy.
Pluses for the Growatt - low frequency inverter, lower min solar V to operate. Minus - clunkier user interface, less options for grid tie, and less good info out there that I could find to put my mind at ease to its reliability. Heavy.
Interested in your all's thoughts and if you have any constructive suggestions. Thanks!
I decided I'm going to change up to 48v Lithium system, and ordered 2 GYLL 48v batteries from Signature Solar the other day.
Now I've got to make a final decision on inverter. I'm liking the all in ones out there on the market and the idea I don't need to piece all the components together like I had to in the past. Want to also have ability to use a portable generator to charge the system should grid power fail and inclement weather reduces solar input.
Looking seriously at a Sol-Ark 5k or a GroWatt 6000T DVM.
My main focus is to supply power to critical loads (2 freezers, fridge, internet) and possibly to offset current grid consumption if solar panels are producing excess energy.
Pluses of the Sol-Ark are that it seems very flexible in what it can do and with high efficiency. User interface seems nice. Lots of good reviews on these units. From what I gather this is a high frequency transformerless inverter. Could this have surge issues with the number of fridge/freezers that I have? Minus - I would have to purchase new solar panels to meet the minimum V for operation (150V). Also the inverter is a little spendy.
Pluses for the Growatt - low frequency inverter, lower min solar V to operate. Minus - clunkier user interface, less options for grid tie, and less good info out there that I could find to put my mind at ease to its reliability. Heavy.
Interested in your all's thoughts and if you have any constructive suggestions. Thanks!