1.   An energy trading business at its simplest sells energy commodities, like gas or electricity, at a specific time, Rigby said.

2.   Demand should increase for energy commodities and industrial metals if manufacturing picks up around the world.

3.   Gains from trading energy commodities and energy derivatives made up the difference.

4.   The published numbers are often used to set prices for financial instruments whose value is determined by the reported prices for the underlying energy commodity.

5.   Other energy commodities also rose.

6.   Before word of the outage, falling crude had been dragging other energy commodities lower.

7.   Crude oil futures and other energy commodities also sank.

8.   Enron had lobbied throughout the government and Congress against regulation of electricity markets and the trading of financial products, known as derivatives, tied to energy commodities.

9.   Heating oil and other energy commodities also rose sharply.

10.   Most other energy commodities also rose.