The Net Zero Insurance Alliance (NZIA) was a United Nations-convened group of insurance and reinsurance companies that pledged to transition their underwriting portfolios to net-zero greenhouse gas emissions by 2050. It was launched in July 2021 at the G20 Climate Summit in Venice, with eight founding members including AXA, Allianz, Aviva, Generali, Munich Re, SCOR, Swiss Re, and Zurich Insurance Group. The alliance operated under the umbrella of the UN Environment Programme's Principles for Sustainable Insurance (PSI) initiative and was part of the broader Glasgow Financial Alliance for Net Zero (GFANZ) announced ahead of COP26.
Members committed to setting science-based intermediate targets every five years, aligning underwriting portfolios with pathways consistent with the 1.5°C goal of the Paris Agreement. The NZIA published its inaugural Target-Setting Protocol in January 2023, which gave insurers methodologies for measuring and reporting insurance-associated emissions.
The alliance experienced a rapid collapse in 2023. Beginning in March 2023, several Republican state attorneys general in the United States sent letters to NZIA members raising antitrust concerns and questioning whether coordinated underwriting restrictions on fossil fuel clients violated US competition law. Munich Re, Zurich, Hannover Re, and SCOR announced their exits in late March and April 2023, followed by AXA, Allianz, and others. By mid-2023 the alliance had lost most of its membership.
In April 2024, UNEP restructured the initiative, replacing the NZIA with the Forum for Insurance Transition to Net Zero (FIT), a broader consultative platform that does not require binding decarbonisation commitments from participants. The episode is frequently cited in debates over greenhushing, antitrust risk for ESG coalitions, and the durability of voluntary private-sector climate alliances. For MUN and policy researchers, the NZIA is a key case study in the intersection of climate finance, competition law, and the limits of voluntary corporate climate governance.
Example
In March 2023, Munich Re became the first major insurer to quit the NZIA, citing antitrust concerns after Republican US state attorneys general challenged the alliance.
Frequently asked questions
Members cited antitrust risk after Republican US state attorneys general argued that coordinated underwriting restrictions on fossil fuel clients could breach competition law. Reputational and legal exposure outweighed perceived benefits.
Keep learning