josievich

1) Yes that will help.
2) you can simply use a standard 2 kW element. I don't get the big push for expensive PTC elements 

@Bobster Thanks for the comprehensive response. A couple of notes from my side
The 3.1kw is the absolute max, based purely on looking at the power ratings of the devices and assuming all are on once. Definitely will not need that at once The plan with the geyser (for now at least) is to have it on the non-essential and supplement with Eskom when required. I gather a decent hybrid inverter would blend that properly (Sunsynk, Dewe, etc)? Maybe later on I can look at changing that up, but from a priority perspective, having the backup for essentials (with solar as a bonus) is a priority. I don't mind losing the geyser during load shedding. Can always manually turn it on later when power is back Already on prepaid - spending about R1.5k/month now in summer, typically R2.2k last winter

Solarman Charts


 
Solar Assistant Charts

 


 

Yup - 5kw should be enough. Correct on the additional batteries - i recently added a second 4.8 (9.6 in total) and can now pull just under 4.8 from the batteries
Also happy to share any charts / experience with you - even a site visit (in PTA)