pipelines
Energy groups accused of overcharging
Labour analysis of official figures says customers have paid £4bn too much, £150 a household, over the past three years as suppliers inflate prices
UK energy tariff reforms simplify market
Confusing and complex pricing will be simplified and limited to four core tariffs for gas and electricity, with easier to understand discounts
UPDATE 8-Crude oil extends losses; traders anticipate Libyan supply
* Libya hopes to restart El Sharara output pressures crude prices
