frivan

Why consider hybrid inverters if you don't need them?

R1500 in two months for hot water... I think solar PV will do better.

I don't think the government cares about food security. They, including Eskom, will continue with their policies until the balance sheet can't go more negative... Then the poor will suffer most.

The following article is a bit older. It is refreshing to see someone trying to make consumers and Eskom work together. However, the incentives seem low: R2,000 per year for plugging your home battery into South...South African households with batteries connected to Deye inverters could get paid R1,000 to R2,000 per year for sharing their storage with the country’s first virtual power plant.

Why would you want to manually control supply to the inverter and not just use the settings?

A variation on option 2 is to use microinverters.

Unless the inverter is disconnected from the municipality, or you only use a 48V charger, you will have to engage with the municipality... And probably you may have to register off grid inverters also.

Her is a plan: 1 Connect 4 solar panels to your geyser 2 Run a 5kW Deye in grid tie mode 3 Install smart switches and controllers 4 Add four more solar panels 5 Buy a Shoto 5kWh battery 6 Add 8 solar panels 7 Add one more 5kW Deye in parallel 8 Add 2 more 5kWh batteries Repeat steps 6 to 8 until you have taken over the world.

You could have used an off grid inverter to achieve the same result. The beauty of the hybrid inverter is that heavy loads like the geyser doesn't have to be connected down stream. The Deye also gives an Aux output you can use for managing battery energy. I would put money on you overloading the inverter and running out of juice if you didn't notice the grid is down.

AI AI. Other than magic, if the Elon uses straight DC from the panels, the follow formula should apply: Pdc = Pgeyser x ( Vstring / 230 )²

Well, then you could use a couple of diodes instead of the Elon.

PBMS tools works with RS232 on other batteries.

I am not sure how the Elon converts DC to AC but I would guess it makes a modified sine wave. If this is the case, Isc is not as important as Imp and the most important is maximising Vmp. Your geyser element size will probably determine the current draw. Well done.

I have heard of people going for pre-paid on rural lines. It is very expensive but beats generators.

If you think the professionals are expensive, wait till you see what the amateurs cost.

It's not a must, but it is nice to have an inverter that responds to frequency shift. I also prefer not having the electronics sitting between the roof and solar panels.

I am assuming M8 and up Rawl bolts are recommended for double brick and concrete walls... I used M10 sleeve anchors. I actually prefer threaded rod in chemical anchor.

Sounds good. Just note the risk of 300 degree air coming out with natural convection. With galvanized water pipes, you can easily build a radiator (heat exchanger) close to the top of the sand. I would put the elements in the bottom of the sand. Perhaps add a few pipe coils in the box for convection and heat distribution.

Most definitely you can do it. Will you get a CoC (electric and gas) for it, not sure. Will it blow up, probably only if you go from 0 to 75 degrees inlet water quickly. I don't have the manual, but check if there are high inlet temperature trips. Otherwise you must devise an electric cut-out for the gas heater if the electric geyser temperature is too high.

I like it. Was wondering if a couple of 50mm holes through the wall will work for the external box... But screw it, dig up the floor!

...if the black and white wires are the right way around.

On Deye/Sunsynk you program the battery size and maximum charge limits on the inverter. The communication with the batteries can reduce charging further but it doesn't override the inverter settings.

Why not use a closed, slow combustion fireplace in stead of a rocket stove? One could add some vent controls in the house to distribute the heat throughout the house.

I will give you the short version: The more warm water you use, the more energy you use. The warmer the water in the geyser, the more losses you add to your system. Controlling time is a poor way of controlling hot water temperature and quantity in the geyser. Geyserwise and some smart thermostats measure water temperature inside the geyser. In your situation, you should consider what you can hide from the landlord. I suggest installing an Elon thermostat: ELON SMART WATER THERMOSTAT https://leroymerlin.co.za/elon-smart-water-thermostat-81504247?sfdr_ptcid=32806_617_759128507&sfdr_hash=7335bbd6c20f0137a8f17f884afc1515&gad_source=1&gad_campaignid=17335597113&gclid=CjwKCAjw0o3SBhBVEiwAh28-jSaEDa18r5LEgEY0IkANeWI_WTyUOj0ZvL4DGkbWcgE9jZvnfXWOXhoCy1UQAvD_BwE

Add two more panels on the eastern side of the smaller roofs, try vertical panels, drill holes in the trees and pour in diesel... Lots of options.