a commonly used reference price index for long-term liquefied natural gas contracts in Japan, as well as Taiwan and South Korea, and is published monthly by the Japanese government representing the average crude oil import price into Japan.

   Jet fuel available in various grades as Jet-A, Jet A-1 and Jet B. see kerosene

   a mechanism defined in Article 6 of the Kyoto Protocol, allows a country with an emission reduction or limitation commitment under the Kyoto Protocol (Annex B Party) to earn emission reduction units (ERUs) from an emission reduction or emission removal project in another Annex B Party, each equivalent to one tonne of CO2, which can be counted towards meeting its Kyoto target. Joint implementation is intended to offer parties a flexible and cost-efficient means of fulfilling a part of their Kyoto commitments, while the host party benefits from foreign investment and technology transfer.

   a metric unit of energy equal to one watt-second.

   a method of pricing contracts that includes occasional moves larger than traditional random processes would generate.