Shah, who is on a two-day visit to the coastal state since yesterday, was accompanied by Goa Chief Minister Manohar Parrikar, during his visit to the facility at Saligao village.
The BJP president spent 15 minutes at the facility, about 10 km from here, before heading for his next event.
The plant, operated by Hindustan Waste Treatment Pvt Ltd, treats around 120 tonnes of garbage every day, mostly collected from the beaches of North Goa. It was inaugurated by Parrikar in 2016.