New Zealand emissions unit (NZU) spot prices fell sharply today following the government's announcement that it will decouple the Emissions Trading Scheme (NZ ETS) unit volumes and price control settings from the country's nationally determined contributions (NDCs) under the Paris Agreement.
The decision, announced late on Tuesday, sparked a major sell-off on Wednesday morning, with spot prices reaching as low as NZ$41.50/t CO2 equivalent ($23.50/t CO2e) — down by almost 20pc from NZ$51.50-51.70/t CO2e a day earlier. Prices bounced back and ended the day at NZ$46.40/t CO2e, the lowest level since May 2024, with more than 600,000 units changing hands during the day.
Future price expectations also fell sharply, with the Australian Securities Exchange (ASX) futures contracts settling between NZ$47.08/t CO2e for the May 2026 contract and NZ$54/t CO2e for May 2030, down from NZ$52.65-61/t CO2e the previous day (see table).
Many of the announced amendments will weaken and reduce the integrity of the Climate Change Response Act, advocacy group Lawyers for Climate Action NZ said.
Currently, the government must be satisfied that the limits and price control settings are "in accordance with" the country's emissions budget, 2050 target and NDC.
"The elephant in the room is that the government is projected to fall short of achieving our 2030 NDC by 84mn t of CO2 equivalent (CO2e). For context, that is equivalent to roughly one entire year of New Zealand's emissions," the organisation said.
"In our view, delinking ETS settings from the NDC, and doing so under urgency, signals the absence of any credible plan for meeting that 84mn t gap," it pointed out.
Apart from removing the requirement for the NZ ETS settings to align with New Zealand's international legal obligations under the Paris Agreement, the government will narrow the role of the Climate Change Commission and remove opportunities for public consultation and input into key decisions, the group warned.
The move marks a "significant policy shift", which is negative for ETS pricing, commodities broker Marex managing director Nigel Brunel said today.
"For a market built on trust, credibility is currency, and today's move appears to have devalued it and anyone trading NZUs today will be recalibrating their long-term assumptions after this announcement," Brunel said.
| ASX NZU futures contracts, 5 November 2025 | NZ$/t CO2e | |||
| Bid | Ask | Settlement | Previous day | |
| May 2026 | 46.25 | 47.90 | 47.08 | 52.65 |
| May 2027 | 47.20 | 49.20 | 48.20 | 54.50 |
| May 2028 | 48.30 | 52.00 | 50.15 | 56.50 |
| May 2029 | 50.00 | 54.00 | 52.00 | 58.65 |
| May 2030 | 52.00 | 56.00 | 54.00 | 61.00 |
| Source: ASX | ||||

