Commonwealth Edison recently filed with the ICC tariff pages to implement new Purchased Electricity Charges, the largest component of the Price to Compare
For residential customers, there will only be a marginal increase from the current winter PEC (5.844 cents per kWh) to the new summer PEC (5.959 cents per kWh) starting June 1, 2018
However, the new residential 2018-19 winter PEC on the tariff filing of 6.525 cents per kWh would be over 10% higher than the current winter PEC. The winter PEC, however, may be adjusted prior to the start of the winter 2018-19 period based on potential supply portfolio changes