So as you are all itching to learn about this then here goes
The whole point of doing this is to learn about Victron, imo the 1980s Mercedes of the off grid world, and live with the limitations of renewables.
So all installed, a 320watt panel facing south east and the back of the house on the shed. To the west are some very tall trees so I only get solar from morning till about 3pm and then it starts to be in shadow. This is the reason I went for Renogy for the panel as it does incredibly well in shaded areas.
A 500 watt Inverter, 100/30 MPPT main solar charger and separate 75/10 auxiliary charger as I want to have a fiddle with vertical axis turbines at some point, I'm curious as currently they seem to provide about 10% of the rated output on a good day.
There is also a 12V distribution board for outside lights, shed lights, a 100W usb C charger, for the battery banks, plus I want to find an online 12v water pump so we can use one of the water butts on a hose instead of with a bucket.
Currently have a double outdoor socket for the wife's twinkly lights and the twin pond pumps, UV light and pond lights running from the shed. That's £12 a month saved without using the power for anything else, man maths
I charge my Makita and Sealey batteries in the shed plus the radio, trickle charger and eventually a battery lawn mower etc.
It's a 314ah LifePo4 , unlike lead acid it gives me every single amp so the battery gives me 3.7kwh of power, I'll happily run it down to 5% and charge to 100% every time, this 20-80 is old logic and not beneficial.
A bit of fiddle fucking to make the Battery monitor and Battery BMS calibrated together and it's been running fine since. I will need to add a panel but I'll do this on the wrong side of the shed roof lifted into the sun by a linear actuator so it is used when needed, this will be operated from a button in the house so if it's raining we won't need to go outside.
All monitoried by Bluetooth which annoyingly stops getting a signal just as I close the back door
I'll do my best to make it wife friendly so when the battery hits 20% it will turn a red light on you can see from the house. This will be till I figure out exactly how much solar I can get away with. I don't like the logic of over-paneling as it seems wasteful and lazy to me. This is all about learning for when we move and go off grid completely.
Next year I want to build a system for the garage but a 48V one with server rack batteries, the issue being I'd need to figure out how to send excess power back to the grid as Victron I don't believe are G99 certified. So I may need a separate switch and they are costly.
Dave!