Moody’s: Climate Change Will Affect Your Credit Rating

The agency has created an economic incentive for cities, states and counties to deal with environmental threats.

1 minute read

December 21, 2017, 7:00 AM PST

By Katharine Jose


Hurricane Sandy

NASA Goddard Space Flight Center / Flickr

In a new report, Moody’s Investor Services becomes the first of the three major credit-rating agencies to outline how the threat of climate will affect the bond ratings of a given city, county or state.

The company plans to take into account both the actual risk of the effects of climate change—floods, wildfires, rising sea levels, hurricanes—and whether or not appropriate measures have been taken to prepare for those risks.

At NPR, Nathan Rott quotes a Moody’s executive:

"'If you have a place that simply throws up its hands in the face of changes to climate trends, then we have to sort of evaluate it on an ongoing basis to see how that abdication of response actually translates to changes in its credit profile,' says Michael Wertz, a Moody's vice president."

Rott writes that in some places, like South Florida, a fair amount has been done to mitigate potential effects a changing climate, but that “it can be difficult for a policymaker to justify a big investment when the associated benefits or risks seem a long way down the road.”

Significantly, “Moody’s announcement may change that,” Rott writes, effectively created an immediate economic incentive to include climate change preparedness in city and state budgets.

Friday, December 1, 2017 in NPR

Young Professional

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban and Environmental Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

October 28, 2026 - Zachary Whalen

A car drives through a puddle, making a large splash. Rain pours down.

California plans to bury El Niño’s downpour

If the state plays its cards right, it may be able to store a billion acre-feet of El Niño’s water in aquifers.

October 28, 2026 - Grist

A pencil rendering of Foundry Park, which shows skyscrapers and public green spaces.

Chicago breaks ground on $3 billion megadevelopment

The new neighborhood, titled Foundry Park, will one day host 3,700 residences.

October 23, 2026 - Chicago Sun Times

A rendering of a high speed rain station in California, with wide platforms and a sleep train with yellow highlights.

California High-Speed Rail Authority CEO resigns after $600,000 scandal

Under Ian Choudri, the authority used taxpayer dollars to fund first class flights and trips to nightclubs.

October 30 - Cal Matters

 A bridge stretches across the Missouri River at Chamberlain, South Dakota.

Want to study the Missouri River? Soon, you may need unanimous approval from 10 states

Legislation would require 10 governors’ permission to study or build projects moving water outside the basin.

October 30 - South Dakota Searchlight

Lake Powell with much of the water evaporated.

Desperate measures: Advocates weigh draining Lake Powell to fill Colorado River

Draining the reservoir could reduce evaporation losses by a couple hundred thousand acre-feet.

October 30 - Yale Environment 360