Quote from Graeme Weston on 21 June 2026, 1:28 pm

Constructive Critique of Rewiring Aotearoa's LNG Alternative Report

Introduction

Rewiring Aotearoa and Sapere deserve credit for challenging the Government's LNG proposal and demonstrating that LNG is neither the lowest cost nor the most strategically resilient response to New Zealand's energy security challenges. The report correctly identifies declining gas reserves, industrial dependence on gas, and the absence of a firm-energy market as major structural issues requiring attention.

However, while the report successfully critiques LNG, it ultimately falls back on a framework that remains rooted in twentieth-century energy thinking. It rejects one fossil-fuel dependency only to replace it with another. More importantly, it overlooks emerging opportunities arising from distributed energy resources, vehicle-to-grid technology, flexible demand, and sovereign ownership of strategic energy assets.

The result is a report that identifies the right problem but stops short of offering the best long-term solutions.

The Diesel Contradiction

The most surprising aspect of the report is its acceptance of diesel as a bridging fuel. The report correctly argues that LNG exposes New Zealand to:

• International fuel markets.
• Geopolitical instability.
• Long-term fossil-fuel dependence.
• Potential future subsidies.

Yet diesel suffers from exactly the same strategic vulnerabilities. New Zealand imports virtually all of its transport fuels. Diesel remains exposed to:

• Shipping disruptions.
• Geopolitical conflicts.
• Supply chain interruptions.
• Foreign pricing decisions.

Recent events around the Strait of Hormuz serve as a stark reminder that imported fossil fuels represent a strategic liability rather than a resilience solution. If LNG is rejected because it creates dependence on imported fuel, the same principle should apply to diesel. Diesel may be cheaper than LNG, but "less bad than LNG" should not be mistaken for a genuinely strategic solution.

The Renewable Reserve Problem

The report proposes that approximately 800 MW of renewable generation could be contracted as a dry-year reserve. Technically this is feasible. Economically it raises fundamental questions. Society would be asked to:

• Fund the capital investment.
• Fund financing costs.
• Fund maintenance.
• Accept that the asset sits largely idle.

This repeats one of the core criticisms frequently directed at the Lake Onslow proposal. An asset worth billions of dollars is built primarily to wait. The report does not adequately answer the obvious question: What should these assets do during the other 95% of their life?

Missing Productive Uses for Surplus Renewable Energy

The report implicitly assumes: Renewable Generation → Idle Reserve → Dry-Year Response

A more productive approach would be: Renewable Generation → Export Industry → Dry-Year Response

Examples include:

• Green ammonia.
• Fertiliser production.
• Hydrogen production.
• Process heat substitution.
• Flexible industrial loads.

These industries can absorb surplus electricity during normal years and rapidly reduce consumption when electricity is required for domestic supply.

Instead of paying renewable assets to generate nothing, New Zealand could generate export revenue, jobs, tax income and foreign exchange while retaining the ability to redirect electricity back into the domestic market during dry years. The report does not appear to evaluate this option.

The Missing Role of V2G and Distributed Flexibility

The report correctly identifies dry years as an energy shortage problem rather than a capacity shortage problem. However, it largely ignores the potential contribution from:

• Vehicle-to-grid.
• Residential batteries.
• Commercial batteries.
• Hot water flexibility.
• Industrial demand response.
• Community batteries.
• Distribution-level flexibility markets.

By the 2030s New Zealand could have hundreds of thousands of V2G-capable vehicles. These resources:

• Conserve hydro storage.
• Reduce evening peaks.
• Shift demand into renewable generation periods.
• Reduce the required size of dedicated dry-year reserves.

The report's conclusions regarding reserve requirements may therefore materially overstate the quantity of dedicated backup generation required.

Scarcity Pricing Is Not a Long-Term Strategy

The report correctly identifies shortcomings in current electricity contract markets. However, it continues to operate within a framework where scarcity remains an important investment signal. Historically this made sense because dispatchable thermal generation was the dominant source of flexibility.

The emerging electricity system is fundamentally different. Future flexibility will increasingly come from:

• Batteries.
• EVs.
• Demand response.
• Flexible industrial loads.
• Distributed generation.
• Hydro conservation.

The objective should not be preserving scarcity. The objective should be eliminating unnecessary scarcity. A well-designed system should reward:

• Efficient location.
• Efficient timing.
• Flexibility.
• Resilience.

Rather than rewarding shortages.

Separating Social Policy from Market Signals

A future electricity system should expose the real cost of supply. Consumers should see transparent signals reflecting:

• Energy costs.
• Transmission costs.
• Distribution costs.
• Congestion costs.
• Losses.
• Reliability requirements.

Cross-subsidies that hide these costs reduce incentives for local solutions. However, exposing real costs should not imply social hardship.  Where households face genuine affordability issues, assistance should occur outside the market. Instead of permanent electricity subsidies, support should focus on eliminating the underlying cause. Examples include:

• Low-interest energy resilience loans.
• Solar financing.
• Battery financing.
• Home efficiency upgrades.
• Community energy investments.

The goal should be reducing future dependence on assistance rather than perpetuating it.

The Missing Institution: A Sovereign Wealth Entity

The report leaves unanswered a critical question. Who should own strategic resilience assets? A Sovereign Wealth Entity (SWE), operating independently and transparently, could fill this role. Its function would be similar to a Reserve Bank. Not to compete in everyday markets. Not to distort prices. But to provide long-term resilience. Responsibilities could include:

• Strategic renewable reserves.
• Hydro conservation programmes.
• Dry-year management.
• Flexible export industries.
• National energy resilience planning.
• Energy transition financing.

Unlike an idle reserve model, SWE-owned assets would remain economically productive. Export revenues generated during normal years would offset the cost of maintaining resilience assets.

Alternative Pathway

A more complete resilience strategy would be:

1. Accelerate renewable generation.
2. Preserve hydro as a seasonal energy reserve.
3. Accelerate V2G deployment.
4. Enable distribution-level flexibility markets.
5. Introduce transparent locational pricing.
6. Develop flexible export industries.
7. Establish a Sovereign Wealth Entity to manage strategic reserves.
8. Treat diesel solely as an emergency contingency rather than a planned bridge fuel.

This approach:

• Reduces dependence on imported fuels.
• Creates productive use for surplus electricity.
• Accelerates renewable investment.
• Improves energy security.
• Reduces scarcity pricing.
• Provides stronger incentives for distributed energy investment.

Conclusion

Sapere successfully demonstrates that LNG is not New Zealand's best pathway. However, replacing LNG with diesel and idle renewable reserves is not the most compelling alternative available. The report largely assumes a centralised electricity system supported by occasional fossil-fuel intervention. The emerging opportunity is fundamentally different. New Zealand can build an energy system based on:

• Renewables overbuild.
• Hydro conservation.
• Distributed flexibility.
• Vehicle-to-grid.
• Flexible export industries.
• Sovereign ownership of strategic resilience assets.

Such a system would not merely survive dry years. It would convert resilience itself into a productive national asset. That possibility deserved explicit consideration within the report and remains an important area for future analysis.

References:

“From Faultlines to Resilience” - Sapere

Rewiring Aotearoa technical explainer