I think the flaw is the way energy is billed. Non Fuel Energy $68.25 (What exactly is non fuel energy?) It seemed to increase when the solar meter was installed. Almost completely offsets grid supply credit.
Hawaii PUC must be owned by Helco.
Electric Service R Residential Service Grid Supply
Customer Charge $10.50
Base Fuel Energy $87.42
Non Fuel Energy $68.25
Energy Cost Adjustment $15.02−
PBF Surcharge $3.16
Purchased Power Adjustment $12.78
RBA Rate Adjustment $7.66
Grid Supply Credit $77.51−
Green Infrastructure Fee $1.27
Total for Current Charges $98.51
Total Amount Due $98.51