We're supposed to have a regulatory regime in Aotearoa New Zealand which is based on "polluter pays", where those who benefit the most from environmentally harmful activities bear the costs of any associated remediation and clean-up activities. Petroleum permit and licence holders are supposed to plug abandoned wells and they're supposed to decommission the infrastructure, but that hasn't happened. And as other members in this House have noted, that imposes significant liabilities on the Crown if it doesn't.