Seventeen organizations filed a lawsuit in Montana District Court seeking a declaratory judgment requiring the Montana Public Service Commission “to account for and take reasonable steps to avoid climate costs and risks in accordance with Montana’s constitution.” The organizations also requested that the court vacate as arbitrary, capricious, and unlawful the Commission’s order denying a petition for rulemaking submitted in February 2024 asking the Commission to adopt regulations requiring consideration of information about the climate consequences of Commission decisions. In their lawsuit, the organizations contended that the environmental provisions of the Montana Constitution require the Commission to consider climate change to ensure both that its actions do not violate Montanans’ constitutional rights and also that its actions “satisfy the State’s affirmative responsibility to maintain and improve a clean and healthful environment.”

Lawsuit seeking a declaration that the Montana Public Service Commission has an affirmative constitutional obligation to account for and take reasonable steps to avoid climate costs and risks.

Climate Smart Missoula v. Montana Department of Public Service Regulation

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Lawsuit Asked Montana Court to Issue Declaration that Public Service Commission Has Constitutional Obligation to Consider Climate Change

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An aim to achieve a quantifiable outcome within a given time-frame, set by an institution such as a national government.

Policy instruments are techniques or tools used by governing authorities to promote certain policies in order to achieve predetermined goals. Put simply, instruments are how a government tries to achieve its goals, with this taxonomy being focused on national policy instruments.

Risk is the potential for adverse consequences resulting from the dynamic interplay between (climate-related) hazards, exposure, and vulnerability of affected human or ecological systems.

Groups  of people who are adversely affected by climate change or the response to it

A set of principles, processes, and practices that build economic and political power to shift from an extractive economy to a regenerative economy.

Justice is the ethical and political framework that addresses fairness, including issues of responsibility, rights, and structural inequity.

Renewable energy means all forms of energy produced from renewable sources in a sustainable manner.

Fossil fuel is a generic term for non-renewable energy sources such as coal, fossil gas, and oil (including crude oil, and petroleum products), that can be used for electricity and heat generation. Fossil fuels are hydrocarbons formed from pressurised and heated organic material buried over millions of years.

Molecules in the atmosphere that play a key role in the greenhouse effect by trapping heat radiating from Earth’s surface.

Area of the economy in which actors engage in identical or related activities.

In human systems, the process of adjustment to actual or expected climate change and its effects, in order to moderate harm, increase resilience or exploit beneficial opportunities. In natural systems, the process of adjustment to actual climate change and its effects; human intervention may facilitate adjustment to expected climate change and its effects.

The management and allocation of funds, assets and investments to meet various objectives

People who are less able to respond to the effects of climate change due to having limited financial or physical assets

Codes and standards are regulatory instruments that specify minimum standards to protect health and safety. This ranges from performance standards, which prescribe outcomes while allowing flexibility to achieve compliance, to the more prescriptive approach of technology-specific standards.

A ban is a legal action that prevents the sale or supply of a product or service, or that recalls a product from the market. Examples are bans on SF6, greenwashing, fossil fuel advertisement or single-use plastics.

Either money or something of monetary value is transferred between two or more organisations, people or countries.

A long-lived, colourless gas, chiefly emitted from fossil fuel combustion, deforestation and cement production.

A potent, short-lived greehouse gas, largely released from livestock, fossil fuel extraction and waste management.

Replacing technologies that burn fossil fuels directly with alternatives powered by electricity.

Actions to reduce emissions in energy generation and supply.

Technologies that capture and hold energy in reserve for later use.

Extreme weather refers to events where a weather variable exceeds (or falls below) a threshold. Meaning it is significantly different from the average or usual weather pattern.

A drought is an extended period of unusually dry weather marked by a significant and sustained lack of precipitation, falling below a specific threshold over a large area for more than a month

Air pollution involves harmful contaminants in the air, affecting both indoor and outdoor environments. It can lead to health issues like respiratory diseases and heart problems, and climate impacts such as global warming. Pollutants can damage plants, trees, habitats, and water bodies like rivers and lakes.

Social protection systems consist of policies that help people manage social risks in order to prevent poverty and maintain decent incomes and living standards

Production of electricity and heat from solar irradiation.

Oil is a combustible liquid fossil fuel composed mainly of hydrocarbons, occurring as crude oil and refined into petroleum products such as petrol, diesel and kerosene.

Fossil gas, commonly known as natural gas, is a fossil fuel consisting chiefly of methane with smaller amounts of other hydrocarbons and trace gases, found in underground deposits.

People with different national or cultural traditions from the dominant population

Social and cultural groups that share collective ancestral ties to the lands and natural resources where they live, occupy or from which they have been displaced

woman and genders outside of the gender binary

Activities of industries that extract natural resources, such as mining, oil, and gas, for commercial use.

The activities of industries involved in the production, distribution, and sale of energy, including electricity, gas, and renewables.

Activities that involve planning, designing and building infrastructure, residential, and commercial structures.

This sector involves the wholesale and retail selling of goods.

This sector involves activities that impart knowledge and skills to individuals, including formal schooling, vocational training and educational support.

Activities of government agencies and institutions that provide public services, enforce laws and manage public resources.

Activities involving the catching, processing, and selling of fish for food, recreation, and industry.

Climate change impacts our society by disrupting the natural, economic and social systems we depend on. Physical hazards and underlying vulnerabilities can lead to increased resource competition for food and water, which can heighten the risk of conflict.

Slow onset events evolve gradually from incremental changes over many years or from increased frequency or intensity of recurring events. As defined in the Cancun Adaptation Framework (2010), slow onset events include risks and impacts from rising temperatures, desertification, biodiversity loss, land and forest degradation, glacial retreat, ocean acidification, sea level rise, and salinization.

Lawsuit Asked Montana Court to Issue Declaration that Public Service Commission Has Constitutional Obligation to Consider Climate Change

Target

Policy instrument

Risk

Impacted group

Just transition

Renewable energy

Fossil fuel

Greenhouse gas

Economic sector

Adaptation/resilience

Finance