council recommend april method form natur ga price tariff commun eec council european commun regard treati establish european econom commun articl thereof regard propos commiss regard opinion european parliament conclus decemb march council emphas member state develop common approach energi price format laid gener principl observ member state energi price polici prejudic system format natur ga price exist member state principl adapt characterist market natur ga ensur greater consist energi price format commun view compar scarciti natur ga advantag suppli optimum alloc resourc ensur mean price polici natur ga price allow adjust trend cost suppli competit posit natur ga price polici prevent ration natur ga area consumpt avoid natur ga tariff system reflect accur structur suppli distribut cost categori suppli view quantiti suppli economi scale larg scale industri reflect decreas scale charg order ensur optimum transmiss network greater regular suppli year provis made special price interrupt suppli price polici plai decis role trend market natur ga consumpt trend monitor view adjust natur ga price consum make valid choic adequ degre market transpar recommend member state step ensur natur ga price tariff commun base common principl format natur ga price make ensur ga suppli optimum alloc resourc take account product acquisit distribut cost form price account ration energi market natur ga relat price form energi natur ga competit natur ga price consum close market natur ga relat price substitut form energi guarante suffici proce cover cost suppli consum method form natur ga price design enabl price adjust competit situat market trend cost cost ga undertak acquir ga pass tariff sell price price artifici low relat market situat cost effect subsid categori consumpt encourag wast part tariff system consist fix compon cover fix cost cost perman connect network compon vari quantiti ga suppli system tariff option gener charg domest user small industri user take account local condit case categori user characterist scale consumpt regular take charg tariff base characterist larger user subject tariff fix cost repres small fraction cost singl tariff appli provis made compon decreas consumpt rise order account economi scale achiev transmiss volum increas tariff charg locat vari relat characterist load factor order pass cost case tariff sale larg user contractu sale price calcul light cost market condit aim transfer demand peak period load shed provis made special tariff price link arrang interrupt suppli carefulli monitor trend demand natur ga sector trend long term close cooper commun level view improv tariff structur ensur natur ga price character greatest degre transpar price cost consum made public luxembourg april council presid von wuerzen oj