Hi everyone and especially @Victron Staff or @Guy Stewart
I need to plan for an OffGrid system (high mountain home)
I already had an about 3Kwc enphase system installed (grid available until recently but grid is now off for more than 3 years probably).
The max power needed is about 1kw (few LED bulbs, radio/TV, GSM internet connection, Cameras and power supply for the heating (pumps mainly - works with wood).
I need to add a minimal number of DC coupled panels to be sure the system will restart in case of heavy snow covering the panels.
Need also to limit investment and more important the number of DC coupled panels because of place on the roof (environmental/architectural/personal restrictions)
The planning is the following:
EasySolar 48/3000 (expecetd < 2k€)
One or two Pylontech USS5000 (expected < 3k€)
400W Solar panels (expected <1k€)
All the connection stuff 'expected (<0,5 k€)
So I have a few questions:
1. The 1:1 power rule will have to take into account the DC coupled panels ?
2. what is the minimal number of panels ( 400W Voc around 38 V, Icc around 13-14 amps) ?
3. am I missing something big ?
4. Parsed the forum but do you have some link to doc/tutos and technical recommendations for such a system
5. tips for keeping cost low/lower ?
5 I am a former electronic/informatic engineer and installed for some time a number of photovoltaic systems mainly with enphase microinverters and some Huawei but no experience with Victron until now.
Thanking you in advance
BG