Vistra Reports 2025 Greenhouse Gas Emissions in Line with GHG Protocol
Vistra Corp. has published its Statement of Greenhouse Gas (GHG) Emissions for the year ended 31 December 2025, reporting total Scope 1 and Scope 2 emissions of approximately 92.84 million metric tonnes of CO₂ equivalent (CO₂e).
The company disclosed Scope 1 emissions—direct emissions from owned or controlled operations—of 92.6 million tonnes CO₂e, compared with a 2010 baseline of 172.8 million tonnes. Scope 2 emissions, which cover indirect emissions from purchased electricity, were significantly lower, with 237,522 tonnes CO₂e (location-based) and 183,382 tonnes CO₂e (market-based).
Vistra confirmed that its emissions reporting follows the Greenhouse Gas Protocol, the widely used international framework developed by the World Resources Institute and the World Business Council for Sustainable Development. The company stated that its management is responsible for the completeness, accuracy, and presentation of the data.
The emissions profile reflects Vistra’s position as one of the largest competitive power generators in the United States, with a diverse energy portfolio that includes natural gas, coal, nuclear, solar, and battery storage. The company noted that Scope 1 emissions—primarily from fuel combustion in power generation—account for the vast majority of its total emissions, while Scope 2 emissions represent less than 0.5%.
Vistra reiterated its climate targets, which include a 60% reduction in Scope 1 and 2 emissions by 2030 compared to a 2010 baseline, and a net-zero emissions goal by 2050, subject to technological and policy developments.
The company’s emissions inventory includes carbon dioxide (CO₂), methane (CH₄), and nitrous oxide (N₂O), all converted into CO₂e using standard global warming potential factors. In 2025, carbon dioxide accounted for the overwhelming majority of emissions, with smaller contributions from methane and nitrous oxide.
Emissions are calculated using a combination of directly measured data and estimated activity data, such as fuel consumption and electricity usage, multiplied by recognised emission factors. For Scope 2 reporting, Vistra applies both location-based and market-based methodologies, incorporating instruments such as Renewable Energy Certificates (RECs) and Emission Free Energy Certificates (EFECs).
The company also noted that emissions reporting involves a degree of estimation uncertainty, due to factors such as data precision and the use of standard emission factors. A recalculation policy is in place to adjust baseline figures if methodological changes exceed a defined materiality threshold.
Overall, the 2025 statement reflects Vistra’s ongoing efforts to manage and reduce emissions while maintaining reliable power generation across its operations.
