Belgium has warned fellow member states that failure to agree this week to reform “technically obsolete” EU rules setting minimum tax rates for fuels and electricity could delay incentives for a switch away from harmful fossil fuels to cleaner alternatives. In a bid to secure the necessary unanimous support for reforms to EU rules on energy taxation, the current holder of the rotating EU Council presidency has suggested governments should have a largely free hand over whether to tax aviation and shipping fuel, and proposed the agriculture and fishing industries should enjoy tax-free energy. “T…