2022 red diesel ban for generators

From what we have been told ( a marquee and circus tent company)

by the SG (which we are a member of, yes was harder than finding rocking horse shit, we had to be "recommended" by a family we did a favour for), 
any "legit" use where we would use Red and now cant, we will be able to claim back the same in tax reduction and so will not end up in any deficit, 

however, we need to pay upfront now and claim the tax back rather than not paying it in first place.
no overall loss to us

the only thing i can see is the Govt have more cash for that tax yr to invest, before we get refunded

(before anyone replies with their views, this is merely what i understand, not to be taken as gospel.. if its incorrect, let us know, as id rather know than labour under a false pretence)