PV array ground buses for something small scale will commonly be a single bare 6 gauge solid copper conductor bonded to the rods with 7 dollar hardware. Unless your setup is really huge, no more than 80 dollars of 6 gauge bare copper.
It's not like you need to buy a $800 thermite welding kit.
> They added a massive chunk to the overall cost
What? You couldn't afford four 19 dollar rods?
https://www.platt.com/platt-electric-supply/Ground-Rods-Copp...
Or four 36 dollar rods?
https://www.platt.com/platt-electric-supply/Ground-Rods-Copp...
PV array ground buses for something small scale will commonly be a single bare 6 gauge solid copper conductor bonded to the rods with 7 dollar hardware. Unless your setup is really huge, no more than 80 dollars of 6 gauge bare copper.
It's not like you need to buy a $800 thermite welding kit.