Stepping up on emissions management and leaving a smaller carbon footprint.
As required by our environmental policy, we monitor, track and report environmental performance, including GHG emissions. These requirements help us ensure that we adhere to the legal limits on our GHG emissions as an LNG provider. Our GHG permits dictate our emissions limits and regulate how we commission our facilities, perform operations and maintenance and report emissions performance. We also report GHG emissions annually for our compressor stations and facilities to the U.S. EPA, employing calculation methodologies under 40 CFR Part 98.
Compliance and oversight
Our operations team, with support from the corporate environmental team, is responsible for GHG emissions compliance.
Managing and reducing GHG emissions
Throughout design, construction and ongoing operations, we implement efforts to reduce emissions and improve our operational efficiency.
Our largest sources of GHG emissions are our LNG facilities. When designing them, we evaluate and select equipment and technologies to responsibly manage emissions and reduce costs.
To support the optimization of our overall portfolio, we have taken steps to improve the efficiency of our chartered vessels. Several newbuild vessels will leverage innovations to improve efficiency, such as reliquefaction technology to capture and reuse “boil-off gas,” which consists of methane. The vessels will also use state-of-the-art engines that significantly reduce fuel consumption.
We operate three pipelines, Creole Trail, Corpus Christi and Midship pipelines, which primarily supply natural gas to our LNG facilities. We take advantage of the best available technologies in pipeline design and construction, employing best practices for managing emissions.
Methane emissions constitute a small fraction of our total GHG operating emissions. As a prudent operator, we perform Leak Detection and Repair (LDAR) at our facilities and compressor stations to monitor fugitive emissions, including methane. In 2019, methane emissions contributed about 0.79% of our total Scope 1 GHG emissions. Fugitive emissions accounted for just 0.10% of our total GHG emissions reported to the U.S. EPA. We monitor for leaks across our operations utilizing Optical Gas Imaging (OGI) cameras or EPA Method 21 techniques on a quarterly to annual basis. We also conduct routine Audio, Visual and Olfactory (AVO) inspections at our LNG facilities and incorporate LDAR results into estimates of fugitive emissions. In 2019, our methane intensity was 0.008%. In other words, for every metric ton of LNG (as natural gas) produced, we emitted only 0.00008 metric tons of methane.