Severn Trent Water has utilised deployments of QLM LIDAR systems to quantify methane emissions across a range of bioresources assets. This presentation will share key findings from the first full year of this campaign, which has focussed on specific asset classes over multiple sites, with a particular focus on biogas upgrading facilities, floating roof digesters, and secondary sludge storage.

These deployments have significantly enhanced our understanding of QLM LIDAR technology's capabilities, limitations, and the potential for integration into operational workflows.

A major outcome of this work is the development of more representative methane emission factors for our assets, informed by measured data from LIDAR as well as complementary monitoring sources. We will also highlight current knowledge gaps in validating each aspect of the Carbon Accounting Workbook emission factors, as well give our latest understanding of emissions not included in that framework including our emissions findings from Primary Settlement Tanks, Activated Sludge Process (ASP) lanes, and modelling of sewerage network emissions.