Latest news with #ShantiMathias
The Spinoff
a day ago
- Politics
- The Spinoff
The group that wants to make Christchurch denser, more connected and more fun
Aiming to be an urbanist voice for Christchurch, Greater Ōtautahi formed last year to advocate for more public transport and affordable housing. Shanti Mathias attends a meet-up. It's a sunny afternoon in the new Christchurch, and the third spaces are bustling. People cross Cathedral Square, passing all the scaffolding. Someone walks past with an immaculately groomed poodle, skirting around three greyhounds on leashes going in the other direction. The cafe on the ground floor of the Tūranga library is popping off most of all. A man on a bike stops to talk to his friend, joking about the Bumble date he's on the way to. A toddler grips a fluffy while her dad trails behind her with a pile of just-checked-out books. The urbanists are loving it. Sitting at the outdoor tables, a meeting of public transport advocacy group Greater Ōtautahi has convened. It's a social catch-up, with much of the discussion seeming to stem from gossip shared on, I gather, multiple group chats. Very urbanist, very nerdy gossip. 'I wish City Nerd had come to Christchurch,' I hear, a reference to an urbanist YouTuber who recently visited Auckland. Others discuss developments in housing recommendations made by independent hearings panels in councils around the country. 'I can't believe they're called independent!' exclaims one person. Someone moans about a proposed building increasing the amount of parking around the hospital; another wonders if there's anything going on that Greater Ōtautahi can submit on. Not much, is the conclusion: everyone's in a bit of a holding pattern until the local government elections get under way. Greater Ōtautahi formed around August 2024, a conglomeration of Christchurch residents who had mostly met online. 'We noticed a real lack of a positive vision around public transport and housing in Christchurch,' says M Grace-Stent, the group's chairperson. The aim was to be non-partisan, but optimistic. 'We see so much room for growth and development here.' Other parts of the country had voices like urbanist blog Greater Auckland or Wellington group A City for People, which mobilised around last year's Wellington District Plan. It was time for a Christchurch equivalent. For Greater Ōtautahi, that has looked like lots of engaging with Christchurch City Council and Environment Canterbury. Members keep an eye on decisions going through councils, and have released submission advice for policies like Canterbury's regional public transport plan and become go-to media spokespeople for public transport issues like the bikes on buses ban. The group meets with elected members and city officials to discuss upcoming decisions and provide a pro-dense housing, pro-efficient and effective public transport perspective. Grace-Stent says that while Greater Ōtautahi is focused on Christchurch, Christchurch's issues are far from unique. 'I think the challenges cities have faced are the same in lots of different places – like, we could learn so much from Japan about how they've built earthquake-safe cities.' The ongoing impact of the 2010-11 earthquakes is noticeable, meaning that Christchurch has more space than cities like Wellington, because so many places have had to be rebuilt. To Greater Ōtautahi, that shouldn't be a disincentive to build denser housing around the city, rather than rely on the growth of commuter towns like Rangiora and Rolleston which lock people into using cars. 'We want people to be living near the city centre, near the amenities, not pushed out further and further into the Canterbury Plains,' Grace-Stent says. Engaging with local government means focusing on small details that can make a big difference. Greater Ōtautahi put lots of energy into a decision about Church Corner, an intersection in Riccarton, when changes to the road layout were being discussed at the end of 2024. While most submissions were brief, the organisation wrote a detailed, multi-page submission supporting a pedestrian crossing and the removal of a right-hand turn from a main road, to improve public safety and connectivity for pedestrians and cyclists. That doesn't mean it always gets its way; the group's preferred option wasn't supported by the council, but at least an option that didn't include cycleways in both directions and made pedestrians wait in the middle was rejected. Greater Ōtautahi is intentionally open – meet-ups are publicly advertised and new people leave with an invitation to join the Discord group chat. Members lean younger, but come from across the political spectrum. 'We've benefitted a lot from secondhand Auckland and Wellington escapees,' says group member Peter Galbraith. Some are experienced transport planners or geographers (Grace-Stent did a master's degree looking at inclusive urban design) but others have only learned about urbanism online. 'It's worked well for us doing lots of stuff in person, to meet people where they're at – we have a really wide range of knowledge from people who do this as their job to people who have seen a few YouTube videos and become interested that way,' Grace-Stent says. The group is still figuring out its strategy around the upcoming local body elections. It isn't endorsing particular candidates (although several Greater Ōtautahi members are considering running). 'We want prospective elected members to move beyond the residents associations and the sort of traditional community groups and go out and listen to stuff that is really happening in their communities,' says Grace-Stent. The group also wants to encourage more young people to vote and be engaged with the process, although it hasn't figured out what exactly that looks like. For Grace-Stent, the key thing is to hold onto the idea that accessible and affordable housing and public transport options that give people choice about where to go and how to get there is a means, not an end. 'Our vision for the city is a place where people can be friendly and spend time together,' they say. 'Being able to live in the city, being able to bike around, having public spaces – these things can make it possible for that friendship and connection to be experienced by lots of people.'
The Spinoff
2 days ago
- Business
- The Spinoff
Changing our methane standards could set a ‘dangerous precedent', scientists warn
A group of scientists from around the world is urging the New Zealand government to ignore a methane report it commissioned that 'redefines the goal of climate action'. Shanti Mathias explains. I hear there's an open letter. What's that about? Twenty-six climate scientists have signed an open letter urging the government not to adopt a standard that would limit the amount of methane reduction New Zealand needs to achieve to reach its climate target. A review of New Zealand's methane targets, conducted in 2024 by a government-appointed group separate from the independent Climate Change Commission, looked at the goal of 'no additional warming'. The open letter says that 'no additional warming' is a goal that 'ignores scientific evidence' and could jeopardise New Zealand's ability to achieve the goals set out in the Paris Agreement. What does 'no additional warming' mean? This term is a way to avoid responsibility, says the open letter. 'It redefines the goal of climate action as simply stabilising the warming impact of emissions from any given source at current levels – rather than seeking to 'minimise all greenhouse gas emissions' and their contribution to global warming.' The concept of 'no additional warming' is supported by agricultural lobby groups like Beef and Lamb and Federated Farmers. It would mean that methane emissions could be kept at current levels, as long as they don't increase; essentially an endorsement of the current amount of climate change. 'It's kind of like saying 'I'm pouring 100 barrels of pollution into this river and it's killing life. If I go and pour 90 barrels of pollution in, I should get credit for it,' Paul Behrens, a professor at Oxford University and signatory of the letter, told the Financial Times. Farming lobby groups are pushing for the government of Ireland to adopt a similar approach, which scientists have also criticised. Why are New Zealand and Ireland being singled out? Both countries have large agriculture sectors which produce a lot of dairy and beef for export, and have very high per-capita methane emissions. The vast majority of methane emissions come from agriculture; more than 85% in New Zealand, from grass-eating animals like cows and sheep burping it out as they digest their food. Methane made up 28.9% of Ireland's emissions in 2022 and 43.5% of New Zealand's emissions in 2020. By comparison, methane is about 12% of the United States' emissions. Drew Shindel, an American professor who chaired the UN Environmental Programmes 2021 global methane assessment, told RNZ that the 'no additional warming' target set a 'dangerous precedent'. If New Zealand and Ireland adopted this standard and were followed by other countries, methane emissions wouldn't be reduced fast enough to meet Paris Agreement targets that are already in jeopardy. Methane is a particularly dangerous source of emissions. While it stays in the atmosphere for less time than carbon dioxide, it causes 80 times as much heating, and causes that heating almost immediately – meaning that if methane continues to be emitted, its dangerous warming effects will continue, too. As a recognition of its more short-lived nature, the amount of methane New Zealand needs to reduce by 2050 is a separate goal to carbon emissions reductions. By 2050, New Zealand is aiming to have net-zero carbon dioxide emissions and a 24% to 47% reduction of methane. By 2030, New Zealand is aiming to have a 10% reduction of methane from 2017 levels. How have New Zealand politicians reacted to this call to reduce methane? Fairly predictably. Christopher Luxon, to whom the letter was addressed, said that the scientists, whom he described as 'worthies', 'might want to direct their focus and their letters to other countries'. He told RNZ 'I'll stack New Zealand's record up against any other country on the planet Earth around our methane emissions,' saying that if New Zealand limited dairy or beef production, those emissions would be produced elsewhere by countries with less environmental efficiency. Chlӧe Swarbrick, co-leader of the Green Party, said that the 'no additional warming' measure could damage New Zealand's reputation and threaten its exports. 'It's really clear that Christopher Luxon has to end any further speculation that his government is on the climate denial bandwagon, they have wasted a year playing around with this mythical notion of 'no additional warming' and now international alarm bells are ringing,' she said. Following the report of the methane panel last year, Cabinet will decide whether to adopt a different methane target. Is New Zealand on track to meet its climate targets otherwise? No. Current policies rely on tree planting and a carbon capture and storage project in the Kapuni gas field, which currently seems completely unviable. The second emissions reduction plan, released last year, put the net zero 2050 target out of reach with domestic targets, meaning New Zealand will likely have to buy millions of dollars of international carbon credits. The organisation Climate Action Tracker rates New Zealand's progress as 'highly insufficient' with current policies headed towards heating of more than four degrees Celsius. Changes to climate finance in the recent budget also mean that New Zealand is not doing its part to support less well-off countries adapt to a warmer planet and reduce their emissions.
The Spinoff
20-05-2025
- Business
- The Spinoff
Why the electricity balance between the North Island and South Island is shifting
With the cable that links New Zealand's islands together electrically due for replacement, and our electricity needs expected to grow enormously, Shanti Mathias explores the major shift under way in how we generate it. Each day, a service vital to New Zealanders traverses Cook Strait carrying essential supplies. But with the risks of a breakdown, the authorities managing the service are proposing that it gets replaced. That replacement won't come cheap: the manufacturers who could make it are all overseas and a high degree of technical knowledge is needed. The replacement will have to be planned years in advance. I'm talking, of course, about the cable that runs under Cook Strait, carrying electricity between Te Waipounamu and Te Ika a Māui. Known as the HVDC, for High Voltage Direct Current, the cable has been an essential part of New Zealand's electricity infrastructure since the islands were electrically connected in 1965. 'It enables a level of resilience for New Zealand's electricity system,' says James Kilty, the chief executive of Transpower. The state-owned company has just released a proposal for public consultation about how it would renew the cables; the plan will be approved after it's submitted to the Commerce Commission, which regulates Transpower. Part of the renewal of the HVDC, which is estimated to cost $1.38bn, is about capacity increase. There are already three cables journeying under the ocean. Together they carry 1,200 megawatts of electricity. How much electricity is that? When I ask Kilty, there's a long pause. 'I'm not sure how to describe it without saying megawatts again,' he says. 'You can fuel large cities with the amount of electricity these things transfer, put it that way.' Transpower is proposing to add a fourth cable under the strait, more kilometres of copper and insulating plastic filled with tumbling charged electrons. New Zealand has been consuming more electricity over time, as more things in our houses, and industrial processes, are electrified. 'The fourth cable means additional capacity – New Zealand is a global leader in renewable electricity, but we need more power if we want to reach net zero by 2050,' Kilty says. Hydro from the past As the need for an HVDC cable upgrade indicates, New Zealand's electricity needs are growing. But the source of electricity carried through the cable is changing, too, as New Zealand's semi-privatised electricity companies shift how and where they generate. Most people associate New Zealand's electricity sources with hydroelectricity. Fair enough: hydro projects currently provide about 57% of New Zealand's electricity (it fluctuates each year depending on how much water is in the hydro lakes). Historically, New Zealand's largest hydro projects have been built in the South Island. Te Waipounamu has sharp, tall mountains, which catch precipitation as rain and snow. That water then tumbles to the sea via rivers and lakes, the force of thousands of tonnes of water spinning turbines, which make electricity. Essentially, it has more water that can fall from higher levels and generate more electricity. Major sources of electricity are New Zealand's largest power station at Lake Manapouri; the Clyde Dam on the Clutha River; and the Waitaki Hydro Scheme, a series of eight stations along one river in the central South Island. The HVDC link Transpower is proposing to replace runs from the Benmore substation at the bottom of the Waitaki scheme to a substation in the Hutt. The scheme was first conceived in 1904 and construction in the Waitaki Valley began in the 1920s; the last station was constructed in 1985. 'Building hydro power is incredibly capital intensive – most hydro dams were built with state backing from the Ministry of Works,' says Ed Miller, a researcher with the Centre for International Corporate Tax Accountability and Research. If you're going through the MacKenzie District, it's impossible to miss how much land and water is dedicated to making electricity. The glacial blues of lakes Ōhau and Pukaki twine into kilometres of canals, often frequented by anglers after the wild salmon which live there. There's a distinct smell of concrete when Sarah Hutchinson gives The Spinoff a tour of the Ōhau A power station. Hutchinson, an electricity supply manager for the six Waitaki stations run by Meridian (the two others are run by Genesis), offers earplugs and hi-vis overalls and leads us into the vibrating belly of the station, which is mostly underground. It feels awesome, in the old-fashioned sense: an amazement that people have built this, like entering a cathedral. It's a different kind of awe than glimpsing Aoraki outside, although surely some of the water charging through the feed pipes rolled off his shoulders. The power station is loud, even though only one turbine is running – there's not much demand just after Easter – and echoey: a secular cathedral, dedicated to the process of making water energy into something new. The vision and technical expertise to keep this running amazes me. I note down some of the words I don't recognise. 'Thrust bearing', 'drainage gallery', 'buzzbar'. A roar of water that sends a line of deep bass through all of Ōhau A. The sound is just a byproduct: the transformation of water and gravity into sparkling electricity happens in the turbines. The turbines spin on a long rotor: their flow is controlled by gates, kind of like window blinds, which are eased open and closed by high-pressure oil in hydraulic systems, which has to be strong enough to withstand the pressure of the water. Ōhau A also shows its age. Construction took place in the 1970s; it's now more than 40 years old. 'Hydropower is reasonably old technology – there's been a lot of changes in how efficient a turbine can be,' says Chris Ewers, the GM of wholesale power at Meridian. 'We're always trying to identify technical limitations or control systems upgrades that will allow us to do more with the assets we have.' For instance, changes to turbines at the Benmore station last year meant its capacity was reassessed as 552 megawatts, a 12-megawatt increase. Making existing hydro generation more efficient is an alternative to building new hydro stations. 'There's a general consensus in the sector that under the resource Management Act, those big hydro projects couldn't be consented now,' Miller says. Ewers agrees, calling consenting, as well as environmental concerns, a 'key challenge' in New Zealand, pointing to the example of the controversial Hawke's Bay Ruataniwha dam. Generating power and selling it wholesale is profitable, and Meridian and the other big three power companies want to return dividends to their shareholders. 'Post privatisation we've seen investment in new generation absolutely collapse while gentailers have generated huge profits and pay enormous dividends,' says Miller. 'That includes the Crown, which is the largest share owner in the sector.' Over time, the amount of hydro energy flowing from the South Island to the North Island under Cook Strait is set to decrease. The Energy Efficiency and Conservation Authority estimates that by the 2030s, hydro will make up just 46-50% of New Zealand's electricity generation, and that percentage will keep falling. What replaces hydro? Wind and solar At the hydro station it seems so simple: water goes in, electricity and water come out. The electricity goes into the grid and, using a system of supply and demand, travels to where it's needed. But it's not so straightforward. It's better for electricity to be close to where it's going to be used. That's why New Zealand's biggest power station, at Lake Manapouri, is close to the Tiwai Point aluminium smelter, which uses about 13% of New Zealand's electricity supply (with extremely subsidised power costs estimated to add $200 to the power bill of every household in the country each year). If that electricity had to travel to Auckland, say, about 10-13% of it would be lost during the process of transmission and distribution – just like how wifi signals are weaker when you're further away from a cellphone tower. That's why the electricity spot market, which finds the cheapest source of power about every half hour, takes into account the distance the generation is away from the demand. Power might be wanted in Auckland – but even if there's lake capacity and cheap electricity in the Waitaki hydro system, it might be better to get slightly more expensive power from a wind farm in Raglan. That's why Meridian has been building wind and solar capacity, Ewers says. 'It's a lot cheaper,' he says. Most of that capacity growth is going to be in the North Island, closer to where the demand is – meaning less hydropower from the South Island will be needed, and when lakes are dry, the North Island can actually power the South. 'Solar investment in Northland could flow to Auckland, and in the summer it could even flow south to power the hydro lakes.' Meridian is building a 130-megawatt solar farm and battery system at Ruakākā, near Whangārei; five of its six operational wind farms are in the North Island, closer to demand. Wind farms, and solar generation even more so, are faster to build than massive hydro projects. None of the massive earthworks which built the cathedral-like spaces of Ōhau A are required. The turbines and panels don't need to withstand the force of tonnes of water pushing through a penstock. While the hydro lake levels have to be within a certain limit (less than a metre for Lake Ōhau, 14 metres for Pukaki), summer electricity from wind and solar farms could mean that hydro capacity is saved for winter, when there's less solar energy. 'That diversity of fuel is important for the security of generation,' Ewers says. While Transpower is independent, he says upgrades to New Zealand's transmission like the HVDC are essential for companies like Meridian to increase generation capacity. 'We need investment in transmission, because it takes longer to build than generation.' New Zealand's electricity needs are expected to grow enormously as manufacturers and individuals move away from fossil fuels. A recent report from Rewiring Aotearoa showed, for example, that 8.4 million fossil fuel-powered machines in New Zealand could feasibly be replaced by electric equivalents. 'Large businesses will start moving forward with electrified kit, not fossil fuel kit – it's much cheaper in the long run,' Miller says. It's particularly cheap if you can generate power where you are. Rapidly dropping prices of manufacturing in China has made it cheaper than ever to use solar panels, either for personal use or bigger industrial use. 'There are so many industrial areas with seas of rooftop spaces, you can imagine more and more solar panels and battery rigs next to them to keep charging,' Miller says. 'That will bring the cost of electricity down because you're not paying for transmission and distribution.' Instead of the big gentailers controlling power, solar will make the electricity market more local, more affordable, and less dependent on fossil fuels. 'It's a lot cheaper to generate on site than import fossil fuels to power an inefficient machine,' Miller says. Ewers thinks the privatised electricity market is working well to create the right amount of affordable, renewable power for New Zealanders. 'Every dollar spent on generation ultimately flows to consumers – you are very much incentivised to invest just the right amount, and do it in the most economic way so you're not burdening New Zealand consumers with huge costs. That's where wind and solar come in.' Miller disagrees. 'Generation investment has been increasing as security of supply has gotten tighter,' he acknowledges. But 'in general, there is a strong incentive [for generation companies] not to invest.' Companies tend to buy ideal wind or solar sites, get consents for new projects, then not build until the energy is absolutely needed – because the capital needed to build a project can go towards sharemarket returns instead. He thinks the government should forgo its share dividends, so money can be directed at building electricity capacity instead. 'The government retaining a significant state shareholding should mean there are the tools to do this, but it hasn't played out that way.' If the government making shareholder resolutions and using seats on the board isn't enough, he says the electricity companies should be regulated into increasing power generation – because if electricity isn't cheap, companies won't replace fossil fuels with electric-powered machines. While solar currently only provides just over 1% of New Zealand's electricity, the EECA estimates that it will be as much as 6% by 2035 and more from 2040 onwards. That rapid growth applies to wind, too, which is estimated to go from 6% of energy in 2021 to 20-34% by 2035. Geotherma l, too, is expected to increase, but not as dramatically. Solar and wind, which are less constant sources (solar doesn't work at night, the wind doesn't always blow), will need to be supported by battery systems. 'It's an exciting time, there are so many renewables in the pipeline and a real opportunity for New Zealand to electrify,' says Kilty, the Transpower CEO. In about five years' time the cable-laying ship will arrive to put the HVDC replacement under Cook Strait. That new cable will carry a very different mix of electricity generation sources to when the cable was last replaced in the 1990s. 'As wind, geothermal and solar farms grow around the nation, we're going to need increased connection between the islands.'
The Spinoff
06-05-2025
- Automotive
- The Spinoff
Why batteries keep causing fires – and how the problem can be fixed
When batteries end up in the general waste, they can cause fires, putting people and property at risk and damaging the environment. Shanti Mathias investigates why disposing of batteries is so complex – and so expensive. When a rubbish truck catches fire, smoke twirling out over the road, the safety procedure is immediate: the driver needs to dump the entire contents of their truck on the kerb and wait for Fire and Emergency to deal with it. These smoking piles of rubbish are a massive human health and environmental risk. Rubbish truck fires are most often caused by one thing: batteries. And battery-sparked fires are becoming more common, with 13 in Auckland in 2025 so far, and five in Christchurch, compared to 20 and 16 in all of 2024 respectively. Auckland Council's Waitākere Refuse and Recycling Transfer Station in Henderson and the Materials Recovery Facility in Onehunga also have about two small smoulder fires a week, likely caused by batteries. While Wellington City Council hasn't recorded any fires so far this year, there were two rubbish truck fires in Kāpiti in 2024. While it's not always possible to trace the exact cause of a fire, and it's likely that some aren't noticed or recorded, batteries are the most likely culprit. The most recent fire was last week, on Auckland's North Shore, when a massive blaze likely sparked by a lithium-ion battery igniting destroyed the Abilities Group recycling plant, sending clouds of thick black smoke into the sky so large they were seen across the city, and prompting emergency alerts to be sent to North Shore residents warning them to stay inside. Fires can have further implications for waste companies, too: just this week, Auckland District Court imposed a $30,000 fine on a scrap metal recycler after a battery fire in 2023 released toxic smoke that blew across the city. There is no easy way for scrap metal recyclers to detect batteries in scrap material, but Auckland Council, which brought the charges, said the case was 'an important precedent in balancing empathy for emerging challenges with the necessity of regulatory compliance', highlighting the importance of 'proactive risk management'. There are more batteries in our houses than ever before, thanks to the affordability of cheap, lithium-ion battery-powered electronics. 'In my own house, we each have a phone, maybe a few in a drawer, iPads and laptops, remote controls for the TV,' says Nic Quilty, CEO of industry group WasteMINZ. Kids' toys, handheld powertools, kitchen gizmos, all containing batteries. Vapes are a particularly big issue; although all vapes sold now are technically rechargeable, low prices mean that many are treated as single use. Millions of vapes being sold and used around the country present a big problem. 'They're fully contained units – you can't separate the battery out,' says Ross O'Loughlin, a regional manager at Waste Management (WM), the country's biggest waste management provider, based in Wellington. Many phones are designed with non-removable batteries too, so those batteries are processed through e-waste systems. As in houses, so in rubbish bins: lots of batteries, dangerously, end up in the rubbish because people don't know where else to put them. But all the chemicals, particularly lithium, which produce a reaction inside the battery are still there, and if a battery gets dented or starts leaking, that energy can be released. This presents a huge risk for councils, which are responsible for waste around New Zealand: fires on trucks and at recycling and waste-processing stations can harm workers and damage important infrastructure. Most councils around the country have separate battery-recycling facilities in an attempt to prevent batteries from being put into kerbside recycling or rubbish. But the systems are different depending on where you are: batteries can be dropped off at some council facilities, and some privately run ones. In certain areas, like Taranaki, there is a charge if you're recycling batteries from a commercial business, or if you have more than 5kg of batteries. How to recycle a battery 'We have to identify the batteries that present an immediate risk,' says O'Loughlin. Waste Management is one of a handful of companies that accepts batteries from councils or privately run battery drop-offs and has permission from the Environmental Protection Authority to ship them overseas to battery-recycling facilities. It recycled 15 tonnes of batteries last year. If lithium gets out of a lithium-ion battery, it immediately starts reacting with the air, producing hydrogen. Those dented, deformed batteries are too dangerous to be shipped, so they have to be sealed then put in landfill. This is often done by putting the leaking batteries in a drum and pouring concrete over it so they don't keep reacting. The batteries that are appropriate to ship are first sorted into different types – lead car batteries are a completely different category to lithium-ion batteries like those in phones – and then packed for transport. This means individually taping over the terminals of batteries with electrical tape so they can't ignite, then packing them in steel drums. The batteries have to be surrounded by a heat-absorbing material that can't be set on fire; WM uses either sand or vermiculite, a natural compound which is lighter than sand. 'We need to prevent a runaway reaction in the container,' O'Louglin explains. The safety precautions are part of the shipping company's requirements; fires in trucks are bad, but fires on ships are even worse, as simply stopping and piling rubbish onto the kerb isn't an option. WM's batteries are shipped to Australia, where the metals inside can be harvested for re-use: mostly nickel, cobalt and lithium. Despite all these precautions, it's still common for there to be fires at the battery-recycling facility, due to the number of highly reactive chemicals. Other battery recyclers, including Phoenix Metalman, ship their batteries to recyclers in Korea and Japan. There's a host of other practical challenges that go with recycling batteries. One is insurance; when Mitre 10 introduced battery drop-off centres to its stores, the risk of fires meant it had to check with its insurer as well as Fire and Emergency New Zealand. O'Loughlin says that the cost of insurance, as well as the smaller scale, is one thing that would make it difficult to have a battery recycling facility in New Zealand. Batteries are also heavy to transport; boxes used for drop-off can't be too large or they become impossible to move. This process is, of course, expensive – much more so than dealing with the kinds of waste that don't burst into flames, like cardboard. It's expensive when a rubbish truck catches fire, with local government footing the bill, but up-to-standard battery recycling is expensive too. So what should we do with them? 'When batteries end up in general rubbish or recycling, they can be unintentionally squashed, compacted, punctured, and when that happens they get hot and that causes fires,' Quilty says. It's reasonably safe to keep undamaged, non-modified batteries in your house until you can get to a battery specific waste drop-off, at a Mitre 10 or Bunnings store, council-run landfill or other facility. WasteMINZ has compiled a map of battery drop-offs around the country that you can view here. One of the reasons battery recycling differs between councils and parts of the country is that there is no national standard for what should happen to used batteries. 'We have nothing from the [central] government saying 'this is what you do with your batteries,' says Quilty. 'We have no consistent national campaign.' The standardisation of recycling rules around the country has had a tangible difference and already meant less contamination of waste streams, O'Loughlin says. Clear messaging around disposing of batteries, no matter where you are, could have the same effect, and prevent some of the dangers batteries create. 'Product stewardship' is the concept of looking after an item through its whole cycle of being manufactured, used, recycled and disposed of. Quilty thinks a national product stewardship model for batteries could be implemented by the government, along with a model for e-waste. It's a principle that retailer Mitre 10 has applied in including battery drop-off stations in 16 of its stores around the country, funded by both the company and local councils. 'We sell batteries to the New Zealand public, they're hard to dispose of safely – we need to take ownership of that,' says Julie Roberts, Mitre 10's head of sustainability. Mitre 10 accepts any of the types of batteries it sells for tools and handheld devices, but not other kinds of batteries like car batteries or solar units. 'As a company, we have an obligation to be responsible for the products we put into the market,' Roberts says. Mitre 10 conducts regular desk audits of the type of batteries it's receiving, keen to avoid the perception that it's simply greenwashing. The Warehouse Group, including Noel Leeming and Warehouse Stationery, offers similar e-waste and battery recycling at some of its stores, as does Bunnings. Jason Bell, chief operating officer of Noel Leeming, said in a statement that Noel Leeming and Warehouse Stationery had recycled 168kg of batteries and e-waste in 2024. Mitre 10 said it has recycled 27.5 tonnes of batteries since its programme began in 2024 and Bunnings has recycled 110 tonnes since it began accepting batteries in late 2021. E-waste programmes like TechCollect also deal with rechargeable batteries, which in some cases need to be separated from the device for battery-specific processing. But for lots of people, the thought of fires and hazardous chemicals isn't on their mind when they're putting a dead battery-powered device or flat batteries from the TV remote or a kid's toy in the bin. Councils put out lots of communications about what to do with batteries in their areas and most transfer stations have a clearly labelled battery disposal area. But only so many people regularly go to landfills or hardware stores, and many never open the council emails in their inboxes. More awareness is needed. 'People need to know what to do with batteries – that's where the risk sits,' says Roberts. 'If we want a circular economy, everyone has a role to play.'
