A quick CurrentCost to Node-RED function to read each channel and split out to topic/payload. Next node could be to publish to a mqtt topic that has already been defined in this node.

gistfile1.txt

var result = msg.payload;
try {
	msg.topic="ccost/" + result.msg.sensor;
	msg.payload = (result.msg.ch1[0].watts[0])*1;
	return msg;
} catch( e )
{
//  console.log("Looks like history data");
}
return null;

Every time I search for how to do something I come across something succint written by you!
Thanks for the help.