This sub-class includes: •manufacture of gas •transmission and/or sale of gaseous fuels (e.g., natural or synthetic gas) through a system of mains to household, industrial and/or commercial users •operators of onshore receiving gas facilities •processing of natural gas, including re-gasification activities •production of gas for the purpose of gas supply by carbonation of coal, from by-products of agriculture or from waste •gas storage and/or gas storage service (e.g., sale of storage capacity for natural gas) •manufacture of gaseous fuels with a specified calorific value, by purification, blending and other processes from gases of various types including natural gas This economic activity may require a licence from the Energy Market Authority or its equivalent.