Effective energy efficiency policy is more important than ever for mitigating carbon emissions and improving energy access globally. Policymakers and researchers can take advantage of Mepsy, CLASP’s free policy analysis tool, to make data-driven decisions about managing the top energy-consuming appliances, now including lighting and considerations for varying compliance levels. This webinar, held on 16 March 2022, informed participants of two major additions to Mepsy’s toolkit: lighting and compliance. In addition, CLASP demonstrated how to use Mepsy to perform custom analyses and multiple tier policy analyses, in response to high demand for the feature. To see all related materials, including a recording of the webinar, visit https://www.clasp.ngo/research/all/2022-mepsy-webinar-materials/