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MPs have been told that smart meters will one day enter a "Star Trek phase" where consumers could save money by running appliances when energy is cheapest. Mandy Baker took a peek into the future. And there's more from Today In Parliament at 2300 on ÃÛÑ¿´«Ã½ Radio 4 and ÃÛÑ¿´«Ã½ Sounds.