See this is where I get a bit lost as we hear kWh numbers for home systems but then you refer to a football field size.
A guy on my street said he has a 25kwh system. It’s slightly smaller than our house and runs panels down the long side and then across the back section. Reckons it powers everything in his house but I’ll ask him after Winter finishes.
Cost was something like USD23k not 250k you mentioned so what am I missing here? Are Aussie ratings different to US? You can get 6kwh systems here for USD4k or so which is for small houses, I know it’s peak power so perhaps we are just quoting spastic BS numbers and the reality is those systems are considerably lower?
Not all systems are equal.
Depends on what system you have and how it's setup. You can get something cheap that you have to replace every 6-8 years or a kit that will last 30+ years, which you just need to replace the panels.
What kind of battery backup? Monitoring system? Controls? Current? Inverter? Panels? They all range from cheap to expensive based on usage and life expectancy. The smart control system for my house was going to be an extra 8k.
Solar arrays are like cars, a 300hp Honda versus a 300hp Porsche is going to cost very different.
We did a 30kWh setup for a small warehouse and it was over 200k.
You need to know the full demand and how long you plan to use it.
I was just throwing something out there based on what i've seen.
The kit i have on my house was 28k installed and it works fine unless you need to run the a/c. There is not enough battery to run it for long. I typically switch the the battery wall only when i know the a/c isn't going to run, it works great in the winter.
You can get a cheap system just to offset some energy during certain times, but a full off the grid system is going to be expensive.
Most people have the kits that tie in to their current electrical setup and use it to reduce electrical draw for short periods of time.