Speaking to todays Yorkshire Post, Stewart said it's something the club may look into ahead of their move back to Rotherham.
"If the League sanctioned this tomorrow, we would seriously look at it for next season,” said Stewart. “They tick all the boxes but, before we can invest, they need to be sanctioned again by the Football League.”
Wycombe, Accrington and Bradford are believed to be amongst clubs in the lower leagues backing the move.
“It is early days but there is certainly a move back towards artificial pitches,” he added.
“They can save a club money in the long term, they are tried and tested in Europe and are far better than in the Eighties, they are softer, hard-wearing, frost free, easy to drain, and good on a player’s muscles. All the old problems have been erased.”