Thought I’d poke this topic. (pun intended). There are a growing number of tools (some with a free non commercial version like Ignition Maker Edition, Hive MQ etc) that support MQTT (with or without Sparkplug B) that might expand your market. Granular energy monitoring is growing rapidly in the industrial market, and the security posture of devices supporting MQTT (no open inbound ports) is appealing. Just my $0.02. Good resources on the Eclipse Foundation website too.