New Zealand approves 280MW AI data centre as energy consumption debate intensifies

Data centres are power hungry - but they don't have to be a burden on NZ's grid

The artificial intelligence boom is driving a global expansion in data centres - and with it, public debate over their heavy demand for power, water and land. Increasingly, governments are weighing their economic benefits against concerns about pressure on electricity grids, local communities and the environment. That debate has now reached Aotearoa New Zealand. Singapore-based Datagrid has secured approval for a NZ$3.5 billion, 280 megawatt (MW) AI data centre near Invercargill. Scheduled to open in 2028, it will become the country's second-largest electricity user after the Tiwai Point aluminium smelter. While Datagrid's "AI factory" is expected to more than double the country's data processing capacity, it has drawn some public unease. The Green Party recently proposed a one-year pause on new AI data centres while stronger rules are developed. Similar regulatory debates are playing out overseas in places such as New York, Amsterdam and Australia. In Ireland - now a global hub for AI infrastructure - data centres accounted for nearly a quarter of the country's metered electricity consumption last year, forcing difficult questions about its future grid capacity. That's particularly relevant to New Zealand, where electricity shortages can already emerge during dry years when hydro lake levels are low. But do data centres inevitably have to become another energy-hungry burden on electricity systems? And, if designed and operated differently, could they help support a cleaner, more flexible grid? Can data centres be grid assets? The answer lies in how these centres consume electricity. If they can adjust when and how they use power, they could become increasingly valuable as New Zealand adds more wind and solar generation to its electricity system. But how, precisely? Many of the computational tasks performed in data centres are not time-critical. AI model training, large-scale data processing and other batch computing can often be scheduled for periods when there is plenty of renewable electricity, wholesale prices are low or the grid is under less strain. Rather than increasing demand during evening peaks, data centres could help absorb surplus wind and solar generation that might otherwise be curtailed. This gives renewable developers greater confidence that the electricity they generate will have a buyer, making new projects more financially viable. Transpower estimates every gigawatt reduction in peak demand could avoid around NZ$1.5 billion in system costs. The Energy Efficiency and Conservation Authority has also identified flexible electricity demand as one of the cheapest ways to reduce future network investment. Similar thinking is already emerging overseas. In Australia, flexible data centre demand is helping support new solar and battery investment. Britain's electricity system operator has suggested new data centres could be built faster in Scotland where renewable electricity is most abundant and the grid can best support them. Data centres can also provide services besides simply consuming electricity. Most already contain sophisticated electrical infrastructure, including uninterruptible power supply (UPS) systems, batteries, backup power systems and, increasingly, on-site renewable generation. With appropriate market rules, these assets could help stabilise the grid by providing fast frequency response and reserve capacity. Data centres themselves could temporarily reduce demand during periods of network congestion. Many existing battery and UPS systems are already technically capable of providing these services, although market arrangements would need to evolve before they could participate more widely. As well, data centres' large and predictable electricity demand could underpin more renewable generation. Long-term power purchase agreements could improve the financial viability of wind and solar projects - particularly smaller community-owned developments that can otherwise struggle to secure finance. Datagrid's power purchase agreement with Mercury covers 140MW of its 280MW electricity demand. This leaves open the possibility that the remaining demand could underpin a new generation of community-owned renewable energy projects across Southland. Getting the incentives right There is no doubt data centres are large electricity consumers. But that does not mean they have to be a liability for the electricity system. Poorly planned projects could increase peak demand, require costly transmission and distribution upgrades, worsen local network congestion and compete with other users for renewable electricity. But with the right design and market incentives, data centres could instead become part of the solution. By shifting when they consume electricity, they can help absorb variable wind and solar generation, reduce pressure on the grid and make it easier to operate a highly renewable electricity system. For regulators, the key question isn't whether data centres are good or bad for the electricity system - but how to create the planning rules, market incentives and operating arrangements that allow them to become part of the solution. If New Zealand can get those settings right, data centres can help integrate renewable energy, support community energy projects and improve grid resilience. With more projects likely to follow Datagrid's Southland development, Aotearoa New Zealand's goal should be to make data centres grid assets rather than grid constraints.

Explainer: What Is A Data Centre And Why Is Everyone Freaking Out Now?

Kate Newton Climate Change Correspondent Explainer - Data centres have existed for decades, so what's the big deal now? The politics of big data officially became part of New Zealand's election campaign last week, after the Green Party launched a policy calling for a one-year pause on new AI data centres. It mirrors a moratorium imposed by New York state earlier in July, until the state government can finalise standards governing how massive data centres are built and run. Prime Minister Christopher Luxon's government has embraced the technology itself, and says that New Zealand is "a good place for data centres to be". But before we ban them or welcome them, how did we even get here? What is a data centre, anyway? At its most basic level, a data centre is a large, cooled building that houses racks of servers and other IT hardware. "You've got really compact computers in there that have air-conditioning units in them, obviously the chips for processing data and then you would have storage as well," technology writer Peter Griffin says. The crucial bit is the air conditioning, he says - the intensity of the processing heats everything up. "That's the big battle in data, is keeping everything cool." They're also incredibly loud places. "You have to put on ear muffs [inside] because of the collective roar of not only the fans in the servers, but the air-conditioning units all around those." Some data centres are deliberately built in cooler locations, to limit the amount of artificial cooling that has to be done. How long have they been around? Despite the surge of debate and interest in data centres, they are not a new concept. Griffin says data centres have existed in some form here in New Zealand since the 1980s, with the advent of early forms of cloud computing (basically, storing files, data and other computing services on someone else's server and accessing them over a network or internet connection). He says Telecom (now Spark) was among the first companies to set up its own data centres, followed by other large companies and services, including New Zealand Post, The Warehouse, and various government departments. These 'on-premises' data centres are still being built - an all-of-government data centre that hosts the country's most sensitive public data opened at Whenuapai airbase last year. But as demand for cloud-computing grew, third-party companies like Datacom built larger data centres - managing the infrastructure and leasing space to companies which needed it. "As a company, you might pay to put some racks of server hardware in someone's data centre, and you would run your applications," Griffin says. That could include billing systems, event ticketing - anything that requires sufficiently large processing power. Most recently, the likes of Microsoft and Amazon Web Services (AWS) have been building or renting 'hyperscale' data centres, which provide cloud computing services to anyone who wants to pay for them. Griffin says there's a "latency" benefit from having these locally based data centres - previously, anyone in New Zealand using AWS or a similar service was accessing their data from servers hosted in Sydney or even further afield. So if they've existed for decades, why is everyone freaking out now? The crucial differences between any of these examples, and what is being opposed in New Zealand and globally, are scale and purpose. The new data centres being proposed and constructed are AI data centres - to train and run proprietary AI models. Datagrid - the large-scale data centre that's been given permission to go ahead in Southland - is the first of these 'AI factories' to be constructed in New Zealand. "They're a different sort of data centre, very much more power-hungry, water-hungry," Griffin told RNZ Nights recently. The difference in scale to what has been built to date is enormous. The Datagrid facility will use 280 megawatts of power, which will make it the country's second-biggest user of electricity behind Tīwai aluminium smelter. It also has consents to draw up to 600,000 litres of groundwater a day - similar to what a town the size of Kaikōura would use - though the company says it expects to mostly use rainwater. While processing is getting increasingly efficient, the rapid uptake of AI across business and society means its overall global energy use is growing. Both the International Energy Agency and a United Nations research group recently published reports estimating that data centre energy use will double by 2030. The other difference is purpose. Data centres in New Zealand have previously either been locally owned and run, or provided ongoing data-hosting and other services to local users. A data centre that exists purely to train an AI model doesn't do that. "That will mainly serve an international audience," Griffin says. "It won't serve New Zealand companies and New Zealand consumers... The government has seen that as basically a digital export." What's the backlash been? Globally, opposition to the construction of AI data centres is heating up, and is especially strong in the US. Data Center Watch - a research project run by AI company 10a Labs - reported that in the first three months of 2026 alone, local opposition blocked or delayed 75 projects worth US$130 billion in the states. Protesters there staged more than 140 demonstrations across 42 states earlier this month during a coordinated day of action. Most of the opposition clusters around concerns about resource allocation and environmental effects. Energy use is a particular "bone of contention", Peter Griffin says. "These companies are so desperate to fast track development of these data centres that they're actually scooping up electricity and are competing with communities, and that's a really bad outcome." Similarly, data centres have faced criticism over of the vast quantities of water needed for cooling. As well as the pressure this might place on supply, there have also been reports that data centres have made water supplies undrinkable. This is not because of the discharged cooling water from data centres - but because of contaminated run-off from construction and sediment build-up in water supplies disrupted by data centres' off-take. Griffin believes the opposition in the US is particularly acute because of existing pressure on water resources, and communities' prior experiences with fracking and the environmental issues that created. The lower proportion of renewable energy available means many centres in the US are powered using gas - augmenting carbon emissions. There have also been complaints about noise, the consenting or permitting process, and a lack of transparency from data centre companies. Should New Zealanders be worried about this, too? Griffin says the issues US communities have faced don't exist to the same extent in New Zealand - yet. The most pressing issue is around the allocation and use of resources - particularly energy. "We've had years now of feeling the pinch, particularly in dry winters when the spot price of electricity goes up." Datagrid has arranged a 140MW agreement with gentailers, but it's not clear how the company will generate its remaining energy requirements. "We need to be really clear if we're going to have these big data centres, these AI factories in New Zealand, that they're not going to compete with our existing industry," Griffin says. "How much water are they going to use? Will they use renewable energy? Are they doing a deal to ensure that they're not going to compete with others for that energy?" At the moment there's no detail around any of that, or any particular rules requiring data centres to invest in their own generation, for instance. Are there any upsides? Yes, Griffin says, and one of them is the technology itself. "If we don't embrace it, we are going to be less competitive than other countries." Invest New Zealand, an agency set up to attract foreign investment to New Zealand, "is targeting something like $25 to $35 billion in data centre investment in the next five years". Southland's mayor Rob Scott says he got over his initial concerns due to the economic opportunity and jobs the construction of Datagrid's facility will create. But once the centres are built, the financial benefits to New Zealand are "murky", Griffin says. The country might "clip the ticket" on the initial investment, but because the companies involved are mostly American or European, there's no guarantee that profits stay - or even get taxed - here. The energy requirements of massive data centres may have an upside, though, with gentailers saying the long-term, high-volume contracts involved will give them greater certainty to commit to major new renewable projects. There might also be benefits available to universities, research agencies and other organisations with major data processing and modelling requirements, Griffin suggests. "If you're building all of this high-capacity computing, can our own businesses and our researchers, our scientists, have access to some of it, even if it's two or three percent of it, so that we can have breakthroughs in science and climate change and health?" Ok, so if there are some benefits, then what are the solutions? The Greens are campaigning on a one-year moratorium on new data centres while the country figures the answers to some of these questions out. Neither Labour nor National support that, but Prime Minister Christopher Luxon said last week that the country did need some "commonsense rules". Australia announced last month it would set up an AI office, and Griffin says New Zealand should be collaborating with its neighbour on what sensible regulations could look like. That could include 'closed loop' cooling, which recirculates water, treats it, and returns it; instead of the more common evaporative cooling where most of the water taken is lost during the cooling process. Some countries were also requiring data centres to only use grey water, rather than drawing from groundwater resources. Here, tech expert Dr Karaitiana Taiuru has suggested that seawater could also be used. New Zealand could also mimic the Australian requirement for large-scale data centres to underwrite their own power supply, or require the energy used to be renewable, Griffin says. "You can't just draw from the existing grid without adding capacity ... and you have to pay the full share of grid connection cost - that can't just be carried on to existing customers." Rather than putting off companies, having a clear framework and rules could provide the certainty they need to invest here, he says. He believes New Zealand should learn from the cautionary tale of social media before unquestioningly embracing either AI, or the data centres that power it. "The utility of being on these platforms seems so beneficial to us that we didn't really see the downsides til it was too late, and we were let down by regulators and watchdogs - they didn't see what was happening either." If we take the same laissez-faire approach to AI, "the impacts are going to be so much worse". AI companies should take heed of the same lessons. "If they don't build that social licence now, it'll come back to bite them".

Data Centres Are Power Hungry - But They Don't Have To Be A Burden On NZ's Grid

The artificial intelligence boom is driving a global expansion in data centres - and with it, public debate over their heavy demand for power, water and land. Increasingly, governments are weighing their economic benefits against concerns about pressure on electricity grids, local communities and the environment. That debate has now reached Aotearoa New Zealand. Singapore-based Datagrid has secured approval for a NZ$3.5 billion, 280 megawatt (MW) AI data centre near Invercargill. Scheduled to open in 2028, it will become the country's second-largest electricity user after the Tiwai Point aluminium smelter. While Datagrid's "AI factory" is expected to more than double the country's data processing capacity, it has drawn some public unease. The Green Party recently proposed a one-year pause on new AI data centres while stronger rules are developed. Similar regulatory debates are playing out overseas in places such as New York, Amsterdam and Australia. In Ireland - now a global hub for AI infrastructure - data centres accounted for nearly a quarter of the country's metered electricity consumption last year, forcing difficult questions about its future grid capacity. That's particularly relevant to New Zealand, where electricity shortages can already emerge during dry years when hydro lake levels are low. But do data centres inevitably have to become another energy-hungry burden on electricity systems? And, if designed and operated differently, could they help support a cleaner, more flexible grid? Can data centres be grid assets? The answer lies in how these centres consume electricity. If they can adjust when and how they use power, they could become increasingly valuable as New Zealand adds more wind and solar generation to its electricity system. But how, precisely? Many of the computational tasks performed in data centres are not time-critical. AI model training, large-scale data processing and other batch computing can often be scheduled for periods when there is plenty of renewable electricity, wholesale prices are low or the grid is under less strain. Rather than increasing demand during evening peaks, data centres could help absorb surplus wind and solar generation that might otherwise be curtailed. This gives renewable developers greater confidence that the electricity they generate will have a buyer, making new projects more financially viable. Transpower estimates every gigawatt reduction in peak demand could avoid around NZ$1.5 billion in system costs. The Energy Efficiency and Conservation Authority has also identified flexible electricity demand as one of the cheapest ways to reduce future network investment. Similar thinking is already emerging overseas. In Australia, flexible data centre demand is helping support new solar and battery investment. Britain's electricity system operator has suggested new data centres could be built faster in Scotland where renewable electricity is most abundant and the grid can best support them. Data centres can also provide services besides simply consuming electricity. Most already contain sophisticated electrical infrastructure, including uninterruptible power supply (UPS) systems, batteries, backup power systems and, increasingly, on-site renewable generation. With appropriate market rules, these assets could help stabilise the grid by providing fast frequency response and reserve capacity. Data centres themselves could temporarily reduce demand during periods of network congestion. Many existing battery and UPS systems are already technically capable of providing these services, although market arrangements would need to evolve before they could participate more widely. As well, data centres' large and predictable electricity demand could underpin more renewable generation. Long-term power purchase agreements could improve the financial viability of wind and solar projects - particularly smaller community-owned developments that can otherwise struggle to secure finance. Datagrid's power purchase agreement with Mercury covers 140MW of its 280MW electricity demand. This leaves open the possibility that the remaining demand could underpin a new generation of community-owned renewable energy projects across Southland. Getting the incentives right There is no doubt data centres are large electricity consumers. But that does not mean they have to be a liability for the electricity system. Poorly planned projects could increase peak demand, require costly transmission and distribution upgrades, worsen local network congestion and compete with other users for renewable electricity. But with the right design and market incentives, data centres could instead become part of the solution. By shifting when they consume electricity, they can help absorb variable wind and solar generation, reduce pressure on the grid and make it easier to operate a highly renewable electricity system. For regulators, the key question isn't whether data centres are good or bad for the electricity system - but how to create the planning rules, market incentives and operating arrangements that allow them to become part of the solution. If New Zealand can get those settings right, data centres can help integrate renewable energy, support community energy projects and improve grid resilience. With more projects likely to follow Datagrid's Southland development, Aotearoa New Zealand's goal should be to make data centres grid assets rather than grid constraints. Alan Brent, Professor and Chair in Sustainable Energy Systems, Te Herenga Waka -- Victoria University of Wellington; Stellenbosch University and Andrew Crossland, Professor in Practice, Department of Engineering, Durham University This article is republished from The Conversation under a Creative Commons license. Read the original article.