Plaintiffs representing the real estate and hotel and lodging industries filed a motion for leave to file a first amended complaint in a lawsuit claiming that building performance standards adopted by the Colorado Air Quality Control Commission and the City and County of Denver are preempted by the federal Energy Policy and Conservation Act (EPCA). The plaintiffs said their proposed amended complaint addressed standing issues identified by the federal district court for the District of Colorado when it dismissed the lawsuit in March 2025. The plaintiffs contended that their amended complaint demonstrated that the challenged standards “both concern and implicate the EPCA-preempted Covered Products in Plaintiffs’ members buildings.”

Challenge to Colorado regulations and a Denver ordinance and regulations establishing building performance standards.

Colorado Apartment Association v. Ryan

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Plaintiffs Sought to File Amended Complaint Challenging Colorado and Denver Building Performance Standards

Filed

United States of America

Colorado

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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

A tax advantage is a fiscal incentive where the government reduces or exempts selected activities, goods or actors from taxes.

Direct investments by the governments using public funds. This can be to support climate initiatives or integrate climate into other projects.

Financial support to help individuals manage the effects of unexpected events, securing their livelihoods and increasing the resilience of people and businesses to the changing climate. It’s especially vital in developing regions where everyday risks, climate-related weather extremes, or crop failures can push people into poverty. Without insurance, people may have to resort to selling assets or cutting consumption to cope with losses.

Tradable permits are market-based tools that grant permission for specific activities, frequently used to regulate emissions. These permits can be issued within a trading system to manage environmental impacts.

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.

An agency providing government-backed financing, guarantees, and insurance to support domestic companies' international exports, that can play a role in financing climate-related projects.

A target to reduce the prevalence of a greenhouse gas over a specific time frame

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

Actions to adapt and increase the resilience of rural and urban infrastructure and settlements to climate change.

The release of heat-trapping gases, primarily from human activities such as burning fossil fuels, agriculture and industry.

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

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

Actions to reduce emissions in energy generation and supply.

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

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 whose health, both mental and physical, makes them more vulnerable to the effects of climate change

Any compulsory, unrequited payment to the government levied on corporations or individuals. This can be for environmental reasons, such as introducing a Carbon tax to set a price that emitters must pay for the greenhouse gases they emit.

The activities of industries that transforms raw materials into finished goods through industrial processes.

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

This sector involves managing waste treatment, sanitation, pollution control and environmental cleanup.

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

This sector involves activities to move goods and people, alongside the storage of products.

Activities that provide lodging, food, and entertainment services to guests, including hotels, restaurants, and resorts.

This sector creates and distributes information and entertainment through television, radio, print, and digital platforms.

This sector provides communication services, software development, and IT solutions.

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

This sector includes firms and individuals offering specialised expertise in fields such as law, accounting, consulting, science and engineering.

Activities involving the management, development, and sale of property assets.

Activities of businesses and institutions that provide financial services and products to individuals and organisations.

Any substance with chemical properties that can cause physical harm to people or damage the environment, including ammonia, carbon monoxide, phosphine, chlorine, arsenic, cadmium, mercury, pesticides, dioxins, microplastics, benzene, asbestos, aflatoxins, fluoride, methanol, and toxins from marine sources.

Plaintiffs Sought to File Amended Complaint Challenging Colorado and Denver Building Performance Standards

Target

Policy instrument

Risk

Impacted group

Just transition

Renewable energy

Fossil fuel

Greenhouse gas

Economic sector

Adaptation/resilience

Finance