I am located in the Var my roof is south and slightly west facing the shed was powered by solar plus generator HS panel and missing battery.
So I decided to start from 0 but I still have all the wiring and the electrical box let's see the bright side of things

Today's energy needs are (I would like to never need the group, so I currently live without electricity)
4 Led bulbs rarely more than 2 lit at the same time
2 smartphone charger
1 chest freezer Energy efficiency: A ++
Annual energy consumption (in kWh): 250
Would you have an idea of the power in PV and battery to withstand even the winter and also an estimate of the budget (I am here for the essentials I can include other needs if my budget allows me a small fridge for it? summer for example)
Thank you in advance, hoping to have given you the necessary information.