Harlingen electricity prices have decreased slightly over the past 7 days, with the average rate dropping 0.1¢ to 15.43¢/kWh. That translates to about $1/month in savings for a typical 1000 kWh home. With 118 plans available and rates spanning from 7.1¢ to 23.54¢, there’s a wide range to compare. The market appears stable with this minor downward movement.