Tigo TS4-A-F - 700W(rapid shutdown only) is $30 - connect to 2 panels, so $15/panel added cost
Tigo TS4-A-O - 700W(rapid shutdown + optimize + monitor) is $43.53 - connect to 2 panels, so $21.77/panel added cost
The extra cost of $6.77/panel for optimization/monitor is worth it to me since...
They added battery because the system is in California, where net metering value went down by 75% for new systems, and Time of use rate is ridiculously high.
But yeah, time to go down the diy route, seems super feasible based on what i found so far
The EG4 18K PV has the following spec for PV Input
AC Input Data
MAX. AC INPUT POWER - 12000W
PV INPUT DATA
NUMBER OF MPPTS - 3
INPUTS PER MPPT - 2 (MPPT 1) | 1 (MPPT 2) | 1 (MPPT 3)
MAX. USABLE INPUT CURRENT - 25A (MPPT 1) | 15A (MPPT 2) | 15A (MPPT 3)
MAX. SHORT CIRCUIT INPUT CURRENT - 31A...
do you know what would be considered as bypass? only power pulled from the grid to help power loads? or does power generated from a pv array stored into the battery in a dc coupled system would also be considered as bypass?
I am planning to get 400W panels, and use Tigo DC optimizers to comply with Rapid shutdown device (RSD) requirement and monitor the system.
the panels are
Axitec 400W Solar Panel 108 Cell Bifacial
Short circuit current Isc: 13.79A
Open circuit voltag Uoc: 37.07 V
RSD are required at each...
Yeah, 15 panels barely made it within the voltage at -1°C for 600V
open-circuit voltage (Voc): 37.07
Voltage Uoc (temp coef) of 0.28/°C
Standard test condition of 25°C
expected lowest temperature of -1°C (so 26°C change)
so 26*0.28/100 * 37.07= 2.70 V change
so each panel would have 39.77V
15...
I got a quote from contractor , $65k for a 16.94kw pv system with 20kWh battery.
They messed up the inverter in the quote since the include inverter is rated for 7kw input while my system is 16.95kw)
Assuming they are going to SolarEdge SE10000H-US when I ask them for correction.
Panels: 44...