Miasma and Media Lockdown

The Leader of Peterborough City Council, Marco Cereste,  is the owner of a private company, PREL, that wants to build a modern version of an incinerator in the city.

Meanwhile, Peterborough City Council is in negotiation to build another publicly owned incinerator, alongside the PREL version, using older technology.

What might be the advantage or disadvantage to PREL of having two incinerators side by side?

(Peterborough City Council is currently unavailable for comment.)