I think so. The Emoncms input protocols are described here. IoTaWatt uses input/bulk.
Emoncms has no provision for capturing or storing units. InfluxDB does. So you can specify the units you want to send to Emoncms, but they arrive as unitless numbers.
Emoncms was improved to accept named inputs, in addition to ordinal values, but that protocol is very verbose and does not provide for efficiently sending multiple frames (time stamps) in one transaction.