Emissions from the largest greenhouse gas emitters in the U.S. were down slightly in 2022, but thousands of industrial facilities with substantial emissions remain, according to data from the Environmental Protection Agency’s recently released Greenhouse Gas Reporting Program.
An Inside Climate News analysis of the data highlights the top 10 greenhouse gas emitters as well as the top emitter for each of six leading greenhouse gasses: carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride, the world’s most potent greenhouse gas.
The assessment also identified top emitters of CO2 and methane, the two leading drivers of climate change, from each of several significant sectors of the economy for greenhouse gas emissions—refineries, steel mills and liquified natural gas (LNG) export terminals and underground gas storage facilities.
Some of the country’s largest climate polluters slashed their emissions in 2022 or said they are in the process of doing so, either voluntarily or by government mandate.
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📸: Vincent D. Johnson / for Inside Climate News
A tightening regulatory and technical landscape is redefining sustainable construction across the UK and beyond. The Building Safety Act is reshaping project governance by requiring transparent reporting and accountability that link safety with environmental sustainability in construction. Compliance processes are driving a shift toward whole life carbon assessment, embedding sustainable building design principles at the earliest design stage and quantifying both operational and embodied carbon.
Digital systems such as the government’s waste‑tracking initiative are enabling circular economy in construction practices, mandating traceable material flows and revealing the carbon footprint of construction through verified lifecycle assessment. These data‑driven mechanisms enhance resource efficiency in construction and reinforce the wider transition to low embodied carbon materials and eco‑friendly construction.
Investment is converging on decarbonisation at scale. A new £120 million waste‑to‑hydrogen facility is designed to transform residual waste into clean fuel, supporting low carbon design and resilient net zero carbon buildings. Growth in grid‑balancing storage improves the stability of renewable‑powered operations, a prerequisite for energy‑efficient buildings and low carbon building performance across portfolios.
Governance frameworks are also advancing. The creation of a dedicated leadership structure for the Greenhouse Gas Protocol elevates global consistency in measuring whole life carbon and encourages transparent benchmarking using environmental product declarations (EPDs). This maturity strengthens sustainable building practices, fosters green construction aligned with BREEAM v7 standards, and supports decarbonising the built environment through life cycle cost and performance management.
The cumulative effect signals a transition to net zero whole life carbon imperatives governed by robust data, certified materials, and measurable outcomes. The progress may appear administrative, yet it represents the essential infrastructure of sustainable material specification, circular construction strategies, and long‑term green infrastructure supporting a truly carbon neutral construction sector.
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