An independent corporation that buys natural gas from many producers, re-sells it to buyers, and obtains the necessary pipeline transportation capacity and removal/export permits and licenses. Aggregators usually sell to buyers that individually require large amounts of natural gas, such as local distribution companies and large industrial customers. (2) Any entity, such as a marketer, broker, public agency city, county or special district that combines the loads of multiple end use customers in negotiating the purchase of electricity, the transmission of electricity and other related services to these customers