Aon has released a seven-step framework designed to guide reinsurers and insurers through the global transition toward renewable energy sources, positioning the industry as a key participant in the shift toward low-carbon economies.
The consulting firm contends that climate change, geopolitical tensions and financial pressures are fundamentally altering energy production and investment structures, requiring the sector to adapt its underwriting practices and risk management approaches to remain viable.
This imperative is underscored by the UN Environment Program's Emissions Gap Report 2025, which indicates the planet is on track for 2.3 to 2.5 degrees Celsius of warming, a trajectory that carries profound implications for insurance pricing, capacity tightening and the need for enhanced climate-scenario stress testing.
The first step in Aon's approach calls for establishing a comprehensive transition strategy that integrates underwriting standards, sustainability objectives and climate governance across an organization.
Assessment of internal climate resilience capabilities represents the second component. The framework recommends evaluating organizational structures responsible for climate strategy implementation and examining how climate information influences pricing decisions, underwriting standards and the development of new products.
Step three emphasizes evaluating the carbon intensity and transition readiness of current insurance portfolios. As capital deployment accelerates – with Swiss Re projecting approximately US$36 trillion allocated to renewable electricity generation by 2040, up from US$2.2 trillion in 2024 – insurers must develop sophisticated risk differentiation strategies.
Onshore wind projects with established maintenance practices warrant classification as low-risk, while floating offshore wind, indoor battery storage and hydro construction projects present higher risk profiles.
Geographic diversification is emerging as a critical consideration, with countries like Australia positioning themselves as hubs for solar and battery storage investment.
Battery energy storage presents substantial premium growth potential, with Aon projecting the sector will produce more than US$1 billion in annual premiums by 2027, growing at approximately 25% annually.
Hydrogen-related coverage could expand to more than US$5 billion by 2027, while renewable energy generation premiums are anticipated to increase by nearly US$3 billion between 2024 and 2030.
Recruiting and retaining specialists represents a critical organizational challenge. The framework identifies climate science expertise, sustainable finance knowledge and renewable energy underwriting experience as essential competencies, requiring firms to establish ongoing professional development programs to cultivate these skills.
The final component addresses climate-related disclosure and reporting practices. Aon indicates that "disclosure regimes are consolidating around ISSB standards," and companies demonstrating transparent, forward-looking climate reporting can differentiate themselves as transition leaders rather than merely risk managers.
