Downstream refers to the activities in the energy industry that take place after the extraction and production of raw materials or primary energy sources such as oil, natural gas, or coal. It primarily encompasses the refining, processing, storage, transportation, and distribution of these resources to end-users such as households, businesses, or industrial facilities. In simpler terms, downstream activities involve the transformation of raw energy resources into usable and marketable products.

Two reliable sources where one can find more information about downstream activities are:

1. Source: International Energy Agency (IEA)
Website: https://www.iea.org/topics/downstream
Description: The IEA is an autonomous agency that provides comprehensive data, analysis, and policy recommendations on various energy-related topics. Their Downstream section offers valuable insights into the downstream sector, covering areas like refining, petrochemicals, distribution, and more.

2. Source: Energy Information Administration (EIA)
Website: https://www.eia.gov/energyexplained/oil-and-petroleum-products/where-our-oil-comes-from/downstream-oil-sector.php
Description: The EIA, part of the U.S. Department of Energy, is an authoritative source of energy information and statistics. Their webpage on the downstream oil sector provides an overview of the downstream activities associated with oil, including refining, transportation, and marketing.

Please note that these websites are subject to changes or updates, but they should provide relevant and up-to-date information about downstream activities within the energy commodities trading sector.