What is implied by the GP is that the cost of ownership for regenerative brakes is lower per joule. That's obviously true when that joule is "reused" and not s

What is implied by the GP is that the cost of ownership for regenerative brakes is lower per joule. That's obviously true when that joule is "reused" and not so obvious when it's dissipated. Mechanical brake pads have to be replaced but I assume there is wear on the (more expensive?) parts in a regen system too.