I have a Sense Energy Monitor but would really like a local solution, ideally Z-Wave as a bunch of my house is already Z-wave-d. Aeotec makes a whole house energy monitor but I need more clamps to monitor things like my HVAC system which can't be tracked with smart plugs.

The Sense learning for appliances hasn't worked all that well with variable loads and it seems to have trouble discerning between the various heat pumps in the house.

IoTaWatt was previously out of stock for a while. It's wifi, but can accommodate more clamps.