New Zealand’s Gas Crisis: How Green Policies Are Squeezing Farmers and Threatening Food Security

The era of speculation about the economic risks of aggressive climate policies is ending. Around the world, countries are beginning to tally the very real costs of rapid “decarbonization” efforts. New Zealand has become one of the latest case studies, as soaring energy prices threaten the future of its greenhouse farming sector … a vital link in the nation’s food supply chain.

Greenhouses in Peril

Greenhouses, typically constructed from glass or plastic, have long been a cornerstone of modern agriculture. By creating controlled environments for crops, they allow farmers to maintain stable temperatures, regulate humidity, and even enrich air with carbon dioxide (CO₂) to accelerate plant growth. This intensive cultivation is especially important in New Zealand, where greenhouses supply large quantities of tomatoes, cucumbers, lettuce, and other produce year-round.

But the system is energy-hungry. Heating vast indoor spaces, running lighting systems, and maintaining CO₂ enrichment all rely heavily on fuel … particularly natural gas. When energy prices climb, greenhouse operators are among the first to feel the squeeze.

For Simon Watson, owner of NZ Hothouse in South Auckland, the shift has been devastating. A veteran tomato grower with 25 years in the business, Watson says natural gas prices have tripled, threatening the survival of his company.

“Twenty-five years ago, gas was abundant and we were told it was going to last forever. It was a wonderful thing,” Watson said. Today, he describes a starkly different reality.

Watson’s operations account for about 10% of the 500 acres of covered crops in the upper North Island. If current energy trends continue, he warns that many greenhouse farms will scale back or close altogether, leaving hundreds of workers jobless and supermarket shelves emptier.

A Broader Energy Crunch

The crisis extends far beyond greenhouse walls. Watson points out that between 80% and 90% of products in New Zealand supermarkets … from dairy and meat to packaged foods and beverages … depend directly or indirectly on natural gas. Fertilizers, refrigeration, and industrial food processing all rely on affordable energy inputs.

Yet New Zealand’s gas reserves are dwindling, and prices have surged. Industry leaders say the government and energy companies have less than a year to find solutions before the next winter drives up demand and pushes the system toward breaking point.

Policy at the Heart of the Problem

New Zealand’s gas crunch did not emerge overnight. In 2018, the government banned new offshore exploration permits in the Taranaki Basin, historically the heart of the country’s oil and gas industry. The decision, hailed by environmentalists as a landmark moment for climate policy, had the effect of discouraging investment and reducing domestic production.

The consequences have now come into focus. With supply shrinking, businesses and households are shouldering the burden of higher prices. In response, the government has recently reversed course, lifting the ban and committing NZ$200 million toward new exploration efforts. New Zealand has also withdrawn from an international alliance committed to phasing out fossil fuels.

However, experts caution that exploration projects take years to yield results. For businesses like Watson’s, the relief may come too late.

An International Warning

The challenges facing New Zealand echo across the global agricultural sector. In Canada, greenhouse operators report carbon tax bills that amount to as much as 40% of their energy costs. On top of that, consumers face higher prices at the pump, in their electricity bills, and even in their grocery carts as the costs ripple through the supply chain.

Farming is uniquely vulnerable to energy shocks. Diesel powers tractors and harvesters; propane fuels grain dryers and barn heaters; and natural gas is the foundation for nitrogen fertilizers, pesticides, and other essential inputs. Removing or heavily taxing these energy sources without viable alternatives threatens not just farmers but food security worldwide.

The Carbon Paradox

One of the great ironies of the debate is that CO₂, the very gas targeted for elimination in climate policies, is also an essential component of plant growth. Farmers often add CO₂ to greenhouses to enhance photosynthesis and increase yields … a reminder that carbon’s role in agriculture is more nuanced than political slogans suggest.

Critics argue that current “decarbonization” strategies prioritize ideology over practicality, imposing policies that raise costs without delivering realistic alternatives. The result, they say, is a cycle of self-inflicted economic pain that undermines food production, jobs, and national security.

A Fork in the Road

New Zealand’s energy dilemma underscores a broader question facing nations worldwide: how to balance environmental goals with economic and social realities. Policymakers are now being forced to reconsider whether ambitious climate targets can be reconciled with affordable energy and stable food supplies.

For farmers like Simon Watson, the clock is ticking. “If something doesn’t change soon,” he warns, “a lot of us won’t be here to talk about it.”

The coming years will determine whether countries double down on rapid decarbonization or recalibrate to protect industries that feed their populations. The stakes are high, and the consequences … as New Zealand is discovering … are very real.