Key developments
U.S. insurers ordered to share climate-loss data
State insurance regulators, led by the National Association of Insurance Commissioners and Florida Insurance Commissioner Michael Yaworsky, are requiring insurers to turn over ZIP-code-level claims and loss records for wildfires, storms and other perils. The broader data call covers more states, more homeowners policy types and smaller insurers than a 2024 effort, and NAIC says it could capture roughly 98% of the market in most states ahead of a public report in 2027.
Why it matters
It is the clearest new attempt to quantify how climate risk is reshaping U.S. property insurance pricing and availability.
Sources & driving stories
E&E NEWS BY POLITICO · Saqib Rahim
E&E News by POLITICO coverageNew study adds evidence on AMOC fragility
A Science Advances paper released April 29 and reported by USA TODAY says a cluster of violent volcanic eruptions likely disrupted the Atlantic Meridional Overturning Circulation during the Younger Dryas by cooling the Earth and changing North Atlantic temperature and salinity. The authors say the findings show the circulation can respond sharply to major climate disturbances, reinforcing current concern that human-caused warming could weaken it further.
Why it matters
The research strengthens the case that the AMOC is highly sensitive to large-scale climate shocks.
Sources & driving stories
USA TODAY
USA TODAY coverageAustralian battery storage scales up fast
AEMO's Quarterly Energy Dynamics report shows Australia's battery fleet averaged 359MW of daytime-to-evening discharge in the first quarter of 2026, more than triple the 98MW a year earlier. The jump followed 4,445MW of new large-scale batteries added since Q1 2025, pushing installed battery storage above 8,000MW; batteries set prices in 32% of trading intervals and generated AU$93.9 million in arbitrage revenue.
Why it matters
Battery storage is becoming a material grid resource that can shape prices and peak demand management.
Sources & driving stories
ENERGY-STORAGE.NEWS · George Heynes
Energy-Storage.News coverageWorth noting
WORTH NOTING
Climate change raises stroke risk
A World Stroke Organization statement ties extreme heat, humidity and polluted air to higher stroke risk and calls for climate-linked hospital alerts.
WORTH NOTING
Chinese solar exports hit record high
March shipments reached 68 GW, signaling sustained overseas demand for Chinese solar amid energy-security concerns.
Still unclear
OPEN QUESTION
Will insurers release usable ZIP-level climate-risk data?
The value of the NAIC effort depends on whether states allow enough transparency for regulators, researchers and consumers to see local loss patterns.
OPEN QUESTION
Does the new AMOC evidence change monitoring priorities?
If the circulation is this disturbance-sensitive, scientists and policymakers may need stronger early-warning systems and updated risk assessments.