Two common meanings. This term typically refers to act of creating or managing a large group or block (aggregate) of consumers who join together to leverage their combined purchasing power when soliciting bids from energy suppliers or negotiating rates for services. The term can apply either to groups of private individuals or to commercial and institutional groups. Aggregation usually decreases the costs involved in dealing with energy suppliers, but it does not necessarily result in lower costs for the energy itself.

Less commonly, aggregation can refer to the process of estimating the total demand and scheduling requirements for energy supplied to a group or block of customers.

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