Uruguay's President Luis Lacalle Pou announced on Friday that the government had renegotiated the terms of a deal that would see Finnish company UPM invest in the building of a pulp plant in the South American country.

The original $3 billion investment by UPM, which already operates one such plant in Uruguay, was controversial because the new plant is located on the Uruguay River, which forms the border with Argentina.

Environmentalists have raised concerns over the plant's impact on the river while Argentina lost a challenge in the International Court of Justice.

Lacalle Pou said in a press conference that under the new agreement, UPM would invest more money while the government would spend less.

Uruguay President Luis Lacalle Pou says the new deal with Finland's UPM will save the government money
Uruguay President Luis Lacalle Pou says the new deal with Finland's UPM will save the government money Uruguay's Presidency / -

UPM will now be responsible for the costs of infrastructure works that under the previous deal had been the government's responsibility.

"We're talking about around $60 million in road infrastructure and $68 million in electrical infrastructure," said Lacalle Pou.

The original agreement was signed by the previous left-wing government when the center-right Lacalle Pou was part of the opposition that had expressed concerns over economic and labor concessions granted to UPM in the deal.

Lacalle Pou also estimated that the government would save around $7 million a year over 20 years in the purchase of electricity generated by the new plant.