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ComEd’s Hourly Pricing: How to calculate your capacity charge

Want to estimate your capacity charge before signing up for ComEd’s Hourly Pricing program? Here’s how to calculate it:

1. Go to this page:  https://secure.comed.com/MyAccount/MyService/Pages/UsageDataTool.aspx, choose “View Summary Data Online,” and “Add” your ComEd account number.

2. Click “View Usage Data” and it’ll take you to a results screen showing vital stats. The “Capacity PLC” at the top is a calculation that is unique to each customer. (PLC stands for “Peak Load Contribution,” and according to ComEd it represents your expected energy usage during high-demand hours on hot summer afternoons. The PLC is your households electricity usage averaged over 10 system peak periods the previous summer. )

3. Once you find your “Capacity PLC,” you multiply the following four figures:

  • The “Capacity PLC” (unique to your account)
  • The “scaling factor” (1.00712)
  • The “forecast pool requirement” (0.9380)
  • The monthly capacity charge rate ($8.331 per Kilowatt-Month)

4. The product of those four numbers is your capacity charge.

For more information, check out CUB’s Hourly Pricing fact sheet.