Tasmania-based pulp and paper analyst Robert Eastment said newsprint is under pressure globally because of the digital delivery of news, information and advertising.
New Zealand production of newsprint has been in decline since 2005, when it hit a peak of 377,000 tonnes, falling to only 276,000 tonnes last year.
"It is a really tough market for Norske Skog, but if they are to remain viable in the future then they have to take really tough decisions," Eastment told APNZ. Norske Skog, which is involved in geothermal energy at Kawerau, is pursuing a range of renewable energy opportunities as part of a broader regional diversification strategy.
The company has two other sites in Australasia - one in New South Wales and the other in Tasmania.
It will invest A$84 million ($106.6m) at its Boyer Mill in Tasmania over the next two years to enable the production of coated grades suitable for catalogues. All the catalogue paper used in Australia is currently imported from overseas.
The Australian Federal Government will contribute A$28m in grants to help fund the project and the Tasmanian Government is providing a A$13m loan. Completion is targeted for the first quarter of 2014.
EPMU national secretary Bill Newson said shutting down a newsprint machine would be a blow to the community and a sign of a growing jobs crisis in New Zealand. "It's particularly galling that at the same time Norske Skog is cutting jobs in New Zealand, it's actually investing in jobs in across the Tasman thanks to the support of the Australian Government," he said in a statement.
The mill's partial shut-down will also have implications for the local power generation industry.
Norske Skog accounts for about 2.9 per cent of New Zealand's power demand and the partial closure would further extend the "significant" generation over-capacity in the electricity market, one market analyst said.
"Power consumption has been flat over the last few years and Norske, a major consumer, means more power will go onto the national grid, which will put downward pressure on prices," he said.
The likelihood of flat power demand has put a dampener on the Government's plans for partial privatisation of its generation assets.
The partial privatisation of Mighty River Power, which was to have been held this month, has been delayed until next year while the Government consults with local iwi.