Commercial Electricity in Mantoloking; The average commercial electricity rate in Mantoloking is 6.35Â¢/kWh. This average (commercial) electricity rate in Mantoloking is 50.31% less than the New Jersey average rate of 12.78Â¢/kWh. The average (commercial) electricity rate in Mantoloking is 37.07% less than the national average rate of 10.09Â¢/kWh.