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DR Participation in the Energy Market (D... > Measuring Load Reductions - Pg. 438

438 PART | IV Case Studies & Applications the operating day. If the offer does not clear in the Day-Ahead market, the CSP may submit the same offer or a new offer on behalf of the end-use site for dis- patch by PJM in the Real-Time Market. PJM will continually re-evaluate the offer by comparing alternatives throughout the operating day. If PJM dispatches the load reduction in real time, then an email notification will be sent to the CSP. Finally, if PJM does not dispatch the load reduction in real time, the CSP may at the end-use customer's direction self-schedule the load reduction. Measuring Load Reductions The load reduction quantity for any hour is the difference between the calcu- lated Customer Baseline Load (CBL) and the metered usage. The CBL is an approximation of what the DR resource would have consumed absent the reduc- tion and is the mechanism that enables DR to effectively be represented as a supply-side resource in the PJM Energy Market software. CSPs must submit load reduction settlements within 60 days of the Load Reduction Event. The 60-day period accommodates end-use sites that rely on EDC meter readings for the settlement of Economic Load Response activity. Many EDCs require 60 days to provide "billing quality" meter data for these settlements. Participating end-use sites must have metering equipment that provides