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New Zealand Government's Diesel Storage Dilemma

3/31/2026, 2:10:34 AM

Overview of Diesel Supply Challenges

Since the closure of the Marsden Point Refinery in 2022, New Zealand has faced significant challenges regarding its diesel supply security. Both the previous Labour government and the current coalition government have recognized that the existing 21-day diesel stockpile is insufficient to mitigate the risks of supply disruptions. In response, the Labour Cabinet mandated a minimum stockholding obligation, which set targets of 28 days for petrol, 24 days for jet fuel, and 21 days for diesel. However, plans to enhance diesel reserves have faced funding and logistical hurdles.

Recent Developments in Diesel Storage Plans

In August 2023, the Ministry of Business, Innovation and Employment (MBIE) initiated a request for proposals to secure an additional 70 million litres of diesel storage, aiming to bolster the emergency reserve to 28 days. This initiative was expected to be operational within a couple of years. However, the Labour government left the significant capital costs unfunded, despite earmarking a $48 million surplus from the Petroleum or Engine Fuel Monitoring Levy for operational costs related to fuel resilience.

Coalition Government's Decision to Halt Plans

Following the election, the newly formed coalition government, led by Associate Energy Minister Shane Jones, decided to terminate the diesel storage acquisition plan. The Cabinet paper highlighted the financial constraints, indicating that procuring 70 million litres of diesel would cost approximately $84 million. Jones noted that the current fiscal environment limited new capital investments and that the government had committed to not increasing fuel taxes during this parliamentary term. As a result, the decision to halt the diesel storage plan has extended New Zealand's vulnerability to potential diesel supply disruptions until at least 2028.

Implications for Consumers and Fuel Companies

The delay in enhancing diesel stockpiling is expected to have financial repercussions for consumers. The costs associated with the additional storage and diesel supply are likely to be passed on to customers, with estimates suggesting an increase of 7 cents per litre for diesel due to the extra storage alone. This cost increase will likely affect the prices of goods and services across New Zealand, as fuel costs are a significant factor in overall pricing.

Criticism of Government Actions

Critics have raised concerns regarding the government's decision to abandon the diesel storage plan, arguing that it compromises New Zealand's energy security. The reliance on fuel importers, such as Z Energy, bp, and Mobil, to manage the additional costs raises questions about the long-term sustainability of the country's fuel supply strategy. The government's approach has been scrutinized, especially in light of rising global fuel prices exacerbated by geopolitical tensions.

What's Next for Diesel Supply Security?

Looking ahead, the government plans to revisit the diesel stockholding strategy, with a new framework expected to be implemented by July 2028. However, the delay in action raises concerns about the adequacy of New Zealand's fuel reserves in the face of potential supply disruptions. The ongoing discussions and evaluations by consultancies Castalia and Envisory will play a crucial role in shaping future policies aimed at ensuring fuel security for the nation.

Verbatim Quotes

“Procuring reserve diesel is expensive. At current prices, 70 million litres would cost $84 million. As the current fiscal environment constrains our ability for new capital investment, I seek your agreement to stop work on securing tank storage and purchasing diesel through this arrangement and instead look at other options. This will prolong our vulnerability to a diesel supply disruption until potentially 2028 but this is unavoidable without committed funding,” — Shane Jones, Associate Energy Minister

“This will prolong our vulnerability to a diesel supply disruption until potentially 2028 but this is unavoidable without committed funding,” a July 2024 Cabinet paper brought by Associate Energy Minister Shane Jones noted.” — Shane Jones, Associate Energy Minister