Invenergy has twice petitioned the Federal Energy Regulatory Commission (FERC) to hold a technical conference on the subject of interregional HVDC Merchant Transmission, also called MHVDC. Invenergy’s petitions came first in July and then again in November. Since then various companies and organisations have been filing dockets in support or opposition to this request, with many of these opinions voiced in the past week. Invenergy’s November petition can be read or downloaded here or here. The requested conference would explore ways to make grid reliability and resilience benefits, associated with MHVDC development, more widely available, as per the first petition, and would “remove barriers to the development” of MHVDC transmission, as per the second. As Invenergy argues, FERC transmission proposals…